java.sql.SQLSyntaxErrorException: Table/View 'CUSTOMER' does not exist

java.sql.SQLSyntaxErrorException: Table/View 'CUSTOMER' does not exist - java

I have a prog that takes input from jframe and tries to store that data into a derby embedded database. I have tried to run a simple insert statement to test the database and it gives me the "java.sql.SQLSyntaxErrorException: Table/View 'CUSTOMER' does not exist." Error. What am I doing wrong?`
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Label;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTabbedPane;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.ButtonGroup;
import javax.swing.JComboBox;
import javax.swing.JRadioButton;
import java.awt.Button;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JList;
import java.awt.List;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.ResultSetMetaData;
public class Auto extends javax.swing.JFrame implements ActionListener {
/**
*
*/
private static final long serialVersionUID = -5777093322764526515L;
private JPanel contentPane;
private JTextField f_name;
private JTextField l_name;
private JTextField f_name2;
private JTextField l_name2;
private JTextField Age;
private JTextField issuing;
private JTextField liscense_num;
private JTextField rental;
private JTextField return_d;
private JTextField total;
private JTextField Age2;
private JTextField issuing2;
private JTextField liscense_num2;
private JTextField rental2;
private JTextField return_d2;
private JTextField total2;
private JTextField agreement_id;
private Button Submit_button;
private Button Clear_button;
private JButton load_button;
private Button Update_button;
private Button return_car;
private JComboBox<?> car_select, car_select2;
private JRadioButton cc_button;
private JRadioButton cc_button2;
private JRadioButton debit_button;
private JRadioButton debit_button2;
private static String url;
private static Connection myConnection;
private static Statement myStatement;
/**
* Launch the application.
*/
public static void main(String[] args) throws SQLException, ClassNotFoundException {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
url = "jdbc:derby:MyDB;create=true";
myConnection = DriverManager.getConnection(url);
myStatement = myConnection.createStatement( );
Auto frame = new Auto();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Auto() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 694, 497);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JTabbedPane Auto_Pane = new JTabbedPane(JTabbedPane.TOP);
Auto_Pane.setBounds(5, 5, 422, 432);
contentPane.add(Auto_Pane);
JPanel New_rent = new JPanel();
Auto_Pane.addTab("New Rental", null, New_rent, null);
New_rent.setLayout(null);
JLabel first_name = new JLabel("First Name: ");
first_name.setBounds(12, 8, 84, 16);
New_rent.add(first_name);
f_name = new JTextField(15);
f_name.setBounds(97, 5, 116, 22);
New_rent.add(f_name);
f_name.setColumns(10);
l_name = new JTextField(15);
l_name.setBounds(97, 40, 116, 22);
l_name.setColumns(10);
New_rent.add(l_name);
JLabel last_name = new JLabel("Last Name: ");
last_name.setBounds(12, 43, 84, 16);
New_rent.add(last_name);
JLabel age = new JLabel("Age: ");
age.setBounds(12, 76, 84, 16);
New_rent.add(age);
Age = new JTextField(2);
Age.setBounds(97, 75, 35, 22);
Age.setColumns(10);
New_rent.add(Age);
JLabel liscense = new JLabel("License #: ");
liscense.setBounds(12, 113, 84, 16);
New_rent.add(liscense);
JLabel issuing_st = new JLabel("Issuing State: ");
issuing_st.setBounds(12, 146, 84, 16);
New_rent.add(issuing_st);
issuing = new JTextField(2);
issuing.setBounds(97, 143, 116, 22);
issuing.setColumns(10);
New_rent.add(issuing);
liscense_num = new JTextField(13);
liscense_num.setBounds(97, 110, 116, 22);
liscense_num.setColumns(10);
New_rent.add(liscense_num);
String[] carStrings = { "Compact", "Midsized", "Standard", "Full Size", "SUV", "Mini Van" };
car_select = new JComboBox<Object>(carStrings);
car_select.setBounds(97, 178, 112, 22);
New_rent.add(car_select);
JLabel car_type = new JLabel("Car Type:");
car_type.setBounds(12, 181, 84, 16);
New_rent.add(car_type);
JLabel rent_date = new JLabel("Rental Date:");
rent_date.setBounds(12, 216, 84, 16);
New_rent.add(rent_date);
rental = new JTextField(10);
rental.setBounds(97, 213, 116, 22);
rental.setColumns(10);
New_rent.add(rental);
JLabel return_date = new JLabel("Return Date:");
return_date.setBounds(12, 251, 84, 16);
New_rent.add(return_date);
return_d = new JTextField(10);
return_d.setBounds(97, 248, 116, 22);
return_d.setColumns(10);
New_rent.add(return_d);
JLabel total_num = new JLabel("Total:");
total_num.setBounds(12, 283, 84, 16);
New_rent.add(total_num);
total = new JTextField(7);
total.setBounds(97, 280, 116, 22);
total.setColumns(10);
New_rent.add(total);
JLabel payment_type = new JLabel("Payment Type:");
payment_type.setBounds(12, 317, 100, 16);
New_rent.add(payment_type);
cc_button = new JRadioButton("Credit Card");
cc_button.setBounds(128, 313, 127, 25);
New_rent.add(cc_button);
debit_button = new JRadioButton("Debit");
debit_button.setBounds(259, 313, 127, 25);
New_rent.add(debit_button);
ButtonGroup group = new ButtonGroup();
group.add(debit_button);
group.add(cc_button);
Submit_button = new Button("Submit");
Submit_button.setBounds(12, 356, 99, 24);
Submit_button.addActionListener(this);
New_rent.add(Submit_button);
Clear_button = new Button("Clear Form");
Clear_button.setBounds(128, 356, 99, 24);
Clear_button.addActionListener(this);
New_rent.add(Clear_button);
JPanel Current_rent = new JPanel();
Auto_Pane.addTab("Current Rental", null, Current_rent, null);
Current_rent.setLayout(null);
load_button = new JButton("Load Current Rental Agreements");
load_button.addActionListener(this);
load_button.setBounds(12, 13, 393, 25);
Current_rent.add(load_button);
List load_list = new List();
load_list.setBounds(12, 54, 393, 229);
Current_rent.add(load_list);
JPanel Rental_ret = new JPanel();
Auto_Pane.addTab("Rental Details", null, Rental_ret, null);
Rental_ret.setLayout(null);
JLabel first_name2 = new JLabel("First Name: ");
first_name2.setBounds(15, 48, 71, 16);
Rental_ret.add(first_name2);
f_name2 = new JTextField(15);
f_name2.setBounds(109, 45, 116, 22);
Rental_ret.add(f_name2);
f_name2.setColumns(10);
l_name2 = new JTextField(15);
l_name2.setBounds(109, 74, 116, 22);
l_name2.setColumns(10);
Rental_ret.add(l_name2);
JLabel last_name2 = new JLabel("Last Name: ");
last_name2.setBounds(15, 77, 69, 16);
Rental_ret.add(last_name2);
Age2 = new JTextField(2);
Age2.setBounds(109, 109, 116, 22);
Age2.setColumns(10);
Rental_ret.add(Age2);
JLabel liscense2 = new JLabel("License #: ");
liscense2.setBounds(15, 141, 64, 16);
Rental_ret.add(liscense2);
JLabel issuing_st2 = new JLabel("Issuing State: ");
issuing_st2.setBounds(15, 170, 83, 16);
Rental_ret.add(issuing_st2);
issuing2 = new JTextField(2);
issuing2.setBounds(109, 167, 116, 22);
issuing2.setColumns(10);
Rental_ret.add(issuing2);
liscense_num2 = new JTextField(13);
liscense_num2.setBounds(109, 138, 116, 22);
liscense_num2.setColumns(10);
Rental_ret.add(liscense_num2);
car_select2 = new JComboBox<Object>(carStrings);
car_select2.setBounds(109, 197, 116, 22);
Rental_ret.add(car_select2);
JLabel car_type2 = new JLabel("Car Type:");
car_type2.setBounds(15, 199, 57, 16);
Rental_ret.add(car_type2);
JLabel rent_date2 = new JLabel("Rental Date:");
rent_date2.setBounds(15, 234, 71, 16);
Rental_ret.add(rent_date2);
JTextField rental2 = new JTextField(10);
rental2.setBounds(109, 231, 116, 22);
rental2.setColumns(10);
Rental_ret.add(rental2);
JLabel return_date2 = new JLabel("Return Date:");
return_date2.setBounds(15, 269, 73, 16);
Rental_ret.add(return_date2);
JTextField return_d2 = new JTextField(10);
return_d2.setColumns(10);
return_d2.setBounds(109, 266, 116, 22);
Rental_ret.add(return_d2);
JLabel total_num2 = new JLabel("Total:");
total_num2.setBounds(15, 298, 34, 16);
Rental_ret.add(total_num2);
JTextField total2 = new JTextField(7);
total2.setColumns(10);
total2.setBounds(109, 295, 116, 22);
Rental_ret.add(total2);
JLabel payment_type2 = new JLabel("Payment Type:");
payment_type2.setBounds(15, 332, 86, 16);
Rental_ret.add(payment_type2);
cc_button2 = new JRadioButton("Credit Card");
cc_button2.setBounds(109, 328, 93, 25);
Rental_ret.add(cc_button2);
debit_button2 = new JRadioButton("Debit");
debit_button2.setBounds(220, 326, 57, 25);
Rental_ret.add(debit_button2);
ButtonGroup group2 = new ButtonGroup();
group2.add(debit_button);
group2.add(cc_button);
JLabel age2 = new JLabel("Age: ");
age2.setBounds(15, 112, 31, 16);
Rental_ret.add(age2);
Update_button = new Button("Update");
Update_button.setBounds(15, 368, 83, 24);
Rental_ret.add(Update_button);
Update_button.addActionListener(this);
JLabel Agreement = new JLabel("Agreement ID: ");
Agreement.setBounds(15, 13, 93, 16);
Rental_ret.add(Agreement);
agreement_id = new JTextField();
agreement_id.setColumns(10);
agreement_id.setBounds(109, 10, 116, 22);
Rental_ret.add(agreement_id);
return_car = new Button("Return Car");
return_car.setBounds(109, 368, 83, 24);
Rental_ret.add(return_car);
return_car.addActionListener(this);
}
public void actionPerformed(ActionEvent action) {
if(action.getSource() == Submit_button){
try {
myStatement.executeUpdate("INSERT INTO Customer (FNAME, LNAME, AGE, LICNUM, STATE, CAR_TYPE, RENTDATE, RETURNDATE, TOTAL, PAYTYPE, RETURNED) VALUES('chen','lee', 40,'S633-433-83-400-0', 'FL', 'C', '2016-04-07', '2016-04-10', 213.47, 'Credit', true)");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(action.getSource() == load_button);
if(action.getSource() == Clear_button);
if(action.getSource() == return_car);
if(action.getSource() == Update_button);
}
}

You need to have the Customers table on your database. Your code insert but don't create the table.
Is necessary to create the table by your code or directly in your DBMS.
Example:
try {
c = DriverManager.getConnection("jdbc...", "user", "pass");
String com = "CREATE TABLE Customers(col1 VARCHAR(20) PRIMARY KEY, coln VARCHAR(50) NOT NULL);";
PreparedStatement st = c.prepareStatement(com);
st.execute();
st.close();
System.out.println("OK!");
}
catch (Exception e) {
e.printStackTrace();
}
Where c is a Connection.

OK I have the Table created under APP. But My INSERT statement does not work, even though the format is correct and query for create table worked from program. The Submit button has action listener so that's not the problem. Why is this statement not working?
try {
myStatement.execute("create table Customer (AgreementID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY(START WITH 1000, INCREMENT BY 1), "
+ "FNAME VARCHAR(25) NOT NULL, LNAME VARCHAR(25) NOT NULL, AGE INTEGER NOT NULL, "
+ "LICNUM VARCHAR(20) NOT NULL, STATE VARCHAR(2) NOT NULL, "
+ "CAR_TYPE VARCHAR(12) NOT NULL, RENTDATE VARCHAR(25) NOT NULL, RETURNDATE VARCHAR(25) NOT NULL, TOTAL DECIMAL(7,2) NOT NULL, "
+ "PAYTYPE VARCHAR(20) NOT NULL, RETURNED BOOLEAN, constraint customer_id_pk primary key (AgreementID))");
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

try {
myStatement.execute("create table Customer (AgreementID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY(START WITH 1000, INCREMENT BY 1), "
+ "FNAME VARCHAR(25) NOT NULL, LNAME VARCHAR(25) NOT NULL, AGE INTEGER NOT NULL, "
+ "LICNUM VARCHAR(20) NOT NULL, STATE VARCHAR(2) NOT NULL, "
+ "CAR_TYPE VARCHAR(12) NOT NULL, RENTDATE VARCHAR(25) NOT NULL, RETURNDATE VARCHAR(25) NOT NULL, TOTAL DECIMAL(7,2) NOT NULL, "
+ "PAYTYPE VARCHAR(20) NOT NULL, RETURNED BOOLEAN, constraint customer_id_pk primary key (AgreementID))");
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

Related

looping function and receiving bytes in java

public class InterfaceGUI implements ActionListener {
private JFrame frame;
private JPanel panelController;
private JPanel panelJack;
private JPanel panelModbus;
private JPanel panelLog;
private JPanel panelStatus;
private JPanel panelToController;
private JPanel panelToJack;
private JLabel lblIpAddController;
private JLabel lblPortController;
private JLabel lblIpAddJack;
private JLabel lblPortJack;
private JLabel lblStatusToController;
private JLabel lblStatusConnToCont;
private JLabel lblIpAddToController;
private JLabel lblIpAddConnToCont;
private JLabel lblPortToController;
private JLabel lblPortConnToCont;
private JLabel lblStatusToJack;
private JLabel lblStatusConnToJack;
private JLabel lblIpAddToJack;
private JLabel lblIpAddConnToJack;
private JLabel lblPortToJack;
private JLabel lblPortConnToJack;
private JLabel lblSlaveId;
private JLabel lblIcon;
private JButton btnConnController;
private JButton btnDiscController;
private JButton btnConnJack;
private JButton btnDiscJack;
private JButton btnConnModbus;
private JTextArea textAreaConnLog;
private JTextField textFieldIpAddController;
private JTextField textFieldPortController;
private JTextField textFieldIpAddJack;
private JTextField textFieldPortJack;
private JTextField textFieldSlaveId;
private Socket myClient;
public byte[] message = new byte[5];
private static final String modbusConn = "modbusconnect";
private static final String modbusDisc = "modbusdisconnect";
/**
* Launch the application.
*/
public static void main(String[] args){
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
InterfaceGUI window = new InterfaceGUI();
window.frame.setVisible(true);
//window.receiveMessage();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public InterfaceGUI() {
initialize();
}
public void startRunning() throws IOException{
try {
while (true){
System.out.println("receive");
InputStream inFromServer = myClient.getInputStream();
DataInputStream in = new DataInputStream(inFromServer);
in.read(message);
System.out.println(Arrays.toString(message));
}
} catch (EOFException eofexception){
System.out.println("error");
}
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
panelController = new JPanel();
panelController.setBorder(new TitledBorder(null, "Connection to Controller", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelController.setBounds(6, 6, 438, 95);
frame.getContentPane().add(panelController);
panelController.setLayout(null);
lblIpAddController = new JLabel("IP Address :");
lblIpAddController.setBounds(13, 24, 74, 16);
panelController.add(lblIpAddController);
textFieldIpAddController = new JTextField();
textFieldIpAddController.setBounds(92, 18, 174, 28);
panelController.add(textFieldIpAddController);
textFieldIpAddController.setColumns(10);
btnConnController = new JButton("Connect");
btnConnController.setBounds(278, 18, 154, 29);
panelController.add(btnConnController);
btnConnController.addActionListener(this);
lblPortController = new JLabel("Port :");
lblPortController.setBounds(54, 58, 33, 16);
panelController.add(lblPortController);
textFieldPortController = new JTextField();
textFieldPortController.setBounds(92, 52, 174, 28);
panelController.add(textFieldPortController);
textFieldPortController.setColumns(10);
btnDiscController = new JButton("Disconnect");
btnDiscController.setBounds(278, 52, 154, 29);
panelController.add(btnDiscController);
btnDiscController.addActionListener(this);
panelJack = new JPanel();
panelJack.setBorder(new TitledBorder(null, "Connection to Jack", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelJack.setBounds(6, 113, 289, 95);
frame.getContentPane().add(panelJack);
panelJack.setLayout(null);
lblIpAddJack = new JLabel("IP Address :");
lblIpAddJack.setBounds(14, 24, 74, 16);
panelJack.add(lblIpAddJack);
textFieldIpAddJack = new JTextField();
textFieldIpAddJack.setBounds(93, 18, 106, 28);
textFieldIpAddJack.setText("111.111.1.111");
panelJack.add(textFieldIpAddJack);
textFieldIpAddJack.setColumns(10);
btnConnJack = new JButton("Connect");
btnConnJack.setBounds(200, 20, 86, 29);
btnConnJack.setFont(new Font("Lucida Grande", Font.PLAIN, 11));
panelJack.add(btnConnJack);
lblPortJack = new JLabel("Port :");
lblPortJack.setBounds(55, 58, 33, 16);
panelJack.add(lblPortJack);
textFieldPortJack = new JTextField();
textFieldPortJack.setBounds(93, 52, 106, 28);
panelJack.add(textFieldPortJack);
textFieldPortJack.setColumns(10);
btnDiscJack = new JButton("Disconnect");
btnDiscJack.setBounds(200, 52, 86, 29);
btnDiscJack.setFont(new Font("Lucida Grande", Font.PLAIN, 11));
panelJack.add(btnDiscJack);
panelStatus = new JPanel();
panelStatus.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Connection Status", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelStatus.setBounds(6, 220, 438, 126);
frame.getContentPane().add(panelStatus);
panelStatus.setLayout(null);
panelToController = new JPanel();
panelToController.setBorder(new TitledBorder(null, "Connection to Controller", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelToController.setBounds(6, 20, 208, 94);
panelStatus.add(panelToController);
panelToController.setLayout(null);
lblStatusToController = new JLabel("Status");
lblStatusToController.setBounds(41, 19, 39, 16);
panelToController.add(lblStatusToController);
lblStatusConnToCont = new JLabel("DISCONNECTED");
lblStatusConnToCont.setForeground(Color.RED);
lblStatusConnToCont.setBounds(85, 19, 117, 16);
lblStatusConnToCont.setHorizontalAlignment(SwingConstants.CENTER);
panelToController.add(lblStatusConnToCont);
lblIpAddToController = new JLabel("IP Address :");
lblIpAddToController.setBounds(6, 43, 74, 16);
panelToController.add(lblIpAddToController);
lblIpAddConnToCont = new JLabel("New label");
lblIpAddConnToCont.setBounds(113, 43, 61, 16);
lblIpAddConnToCont.setHorizontalAlignment(SwingConstants.CENTER);
panelToController.add(lblIpAddConnToCont);
lblPortToController = new JLabel("Port :");
lblPortToController.setBounds(47, 66, 33, 16);
panelToController.add(lblPortToController);
lblPortConnToCont = new JLabel("New label");
lblPortConnToCont.setBounds(113, 66, 61, 16);
lblPortConnToCont.setHorizontalAlignment(SwingConstants.CENTER);
panelToController.add(lblPortConnToCont);
panelToJack = new JPanel();
panelToJack.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Connection to Jack", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelToJack.setBounds(218, 20, 214, 94);
panelStatus.add(panelToJack);
panelToJack.setLayout(null);
lblStatusToJack = new JLabel("Status");
lblStatusToJack.setBounds(41, 19, 39, 16);
panelToJack.add(lblStatusToJack);
lblStatusConnToJack = new JLabel("DISCONNECTED");
lblStatusConnToJack.setForeground(Color.RED);
lblStatusConnToJack.setBounds(85, 19, 123, 16);
lblStatusConnToJack.setHorizontalAlignment(SwingConstants.CENTER);
panelToJack.add(lblStatusConnToJack);
lblIpAddToJack = new JLabel("IP Address :");
lblIpAddToJack.setBounds(6, 43, 74, 16);
panelToJack.add(lblIpAddToJack);
lblIpAddConnToJack = new JLabel("New label");
lblIpAddConnToJack.setBounds(116, 43, 61, 16);
lblIpAddConnToJack.setHorizontalAlignment(SwingConstants.CENTER);
panelToJack.add(lblIpAddConnToJack);
lblPortToJack = new JLabel("Port :");
lblPortToJack.setBounds(47, 66, 33, 16);
panelToJack.add(lblPortToJack);
lblPortConnToJack = new JLabel("New label");
lblPortConnToJack.setBounds(116, 66, 61, 16);
lblPortConnToJack.setHorizontalAlignment(SwingConstants.CENTER);
panelToJack.add(lblPortConnToJack);
panelModbus = new JPanel();
panelModbus.setBorder(new TitledBorder(null, "Modbus", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelModbus.setBounds(296, 113, 148, 95);
frame.getContentPane().add(panelModbus);
panelModbus.setLayout(null);
lblSlaveId = new JLabel("ID :");
lblSlaveId.setBounds(33, 24, 22, 16);
panelModbus.add(lblSlaveId);
textFieldSlaveId = new JTextField();
textFieldSlaveId.setBounds(60, 18, 82, 28);
panelModbus.add(textFieldSlaveId);
textFieldSlaveId.setColumns(10);
lblIcon = new JLabel("icon");
lblIcon.setBounds(17, 52, 32, 35);
panelModbus.add(lblIcon);
Image imgDisconnect = new ImageIcon(this.getClass().getResource("red-unlock-icon.png")).getImage();
lblIcon.setIcon(new ImageIcon(imgDisconnect));
btnConnModbus = new JButton("Connect");
btnConnModbus.setBounds(60, 51, 82, 29);
panelModbus.add(btnConnModbus);
panelLog = new JPanel();
panelLog.setBorder(new TitledBorder(null, "Connection Log", TitledBorder.LEADING, TitledBorder.TOP, null, null));
panelLog.setBounds(6, 358, 438, 214);
frame.getContentPane().add(panelLog);
panelLog.setLayout(null);
textAreaConnLog = new JTextArea();
textAreaConnLog.setBounds(6, 19, 426, 189);
panelLog.add(textAreaConnLog);
}
#Override
public void actionPerformed(ActionEvent ae) {
// TODO Auto-generated method stub
if(ae.getSource() instanceof JButton){
if(ae.getSource() == btnConnController){
//check validity ip dan port number later on
try {
myClient = new Socket("192.168.1.104", 1234);
if(myClient.isConnected() == true){
textAreaConnLog.setText("connected to 192.168.1.104 at port 1234");
lblStatusConnToJack.setText("CONNECTED");
lblStatusConnToJack.setForeground(Color.GREEN);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
I am currently building a client program to receive broadcasted message by the server. Just want to make things clear, is it correct that the method startRunning() will keep looping itself without anyone calling it? Also, the incoming data is in the form of bytes, can i use the method .read(message) to read and store the data into message[]?

Is it correct that the method startRunning() will keep looping itself without anyone calling it?
You have to call the method startRunning() at least once so that it starts executing its code; after that the while block will continue to loop infinitly unless an exception occurs.
Also, the incoming data is in the form of bytes, can i use the method .read(message) to read and store the data into message[]?
Yes, you can. See this link for the specifications
If I might add a tip:
private boolean Continue = true;
public void setContinue(boolean b)
{
Continue = b;
}
public void startRunning() throws IOException
{
DataInputStream in;
try
{
while (Continue)
{
System.out.println("receive");
InputStream inFromServer = myClient.getInputStream();
in = new DataInputStream(inFromServer);
in.read(message);
System.out.println(Arrays.toString(message));
}
}
catch (EOFException eofexception)
{
System.out.println("error");
}
catch(Exception ex)
{
in.close();
throw ex;
}
}
Note the condition of the while-loop. This would make your code more responsive to interrupts, should you need them; streams should not be open infinitly.
Also, you ought to close the stream when an exception does occur.

Java null pointer exception input to database in phpmyadmin with GUI and MYSQL [closed]

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I'm trying to add input to my database through the use of my GUI and MYSQL code. But i keep getting "java.lang.NullPointerException" And it probably isn't the last error after that has been fixed.. Anyway. The button press is supposed to take the input from the textboxes that you input, and send it to the database, but it doesn't quite work.
Can you help me? The problem is somewhere in the actionPerformed method
(You can copy paste the code and run it directly if it would help)
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import javax.swing.JToolBar;
import javax.swing.JDesktopPane;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JTextField;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JRadioButton;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.sql.*;
import javax.swing.JPasswordField;
import javax.swing.JList;
import javax.swing.JComboBox;
public class MyGuiApplication {
//database globals
private Connection con;
private Statement st;
private ResultSet rs;
//gui globals
private JFrame frame;
private JTextField EmailTextField;
private JTextField FirstNameTextField;
private JTextField LastNameTextField;
private JTextField MobileNumberTextField;
private JLabel lblPassword;
private JLabel lblConfirmPassword;
private JRadioButton MrsMsBTN;
private JRadioButton MrBTN;
private JLabel lblTitle;
private JLabel lblFirstName;
private JLabel lblLastName;
private JLabel lblMobileNumber;
private JLabel lblNewCustomer;
private JLabel lblDeliveryInformation;
private JLabel lblInCaseWe;
private JLabel lblMandatoryField;
private JPasswordField ConfirmPasswordField;
private JPasswordField PasswordField;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MyGuiApplication window = new MyGuiApplication();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public MyGuiApplication() {
initialize();
DBConnect();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 456, 560);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
//KNAPPEN
JButton btnUpdate = new JButton("update");
//ACTION LISTENER - TILFØJ DATA TIL DATABASEN VED TRYK PÅ KNAP
btnUpdate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0)
{
try
{
String sql="INSERT INTO customers (Email_Address, Password, User_ID, Title_Mr/Mrs, First_Name, Last_Name, Phone_Number, How_did_you_find_us?, Agree_to_terms_&_conditions, Receive_mails_and_offers?) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement preparedStatement=con.prepareStatement(sql);
preparedStatement.setString (1, EmailTextField.getText()); // email addresse
preparedStatement.setString (2, PasswordField.getText()); // Stemme overens med ConfirmPasswordField?
preparedStatement.setInt (3, ((Integer) null)); //user ID primary key auto increment
preparedStatement.setString (4, "Mr"); // Title mrs/mr
preparedStatement.setString (5, FirstNameTextField.getText());
preparedStatement.setString (6, LastNameTextField.getText());
preparedStatement.setString (7, MobileNumberTextField.getText());
preparedStatement.setString (8, null); //dropdown menu, "how did you find us"?
preparedStatement.setBoolean(9, true); // agree to terms
preparedStatement.setBoolean(10, true); // receive email offers from us
preparedStatement.executeUpdate();
} catch (Exception e) {
System.out.print(e);
}
}
});
btnUpdate.setBounds(138, 474, 89, 23);
frame.getContentPane().add(btnUpdate);
EmailTextField = new JTextField();
EmailTextField.setBounds(163, 68, 186, 20);
frame.getContentPane().add(EmailTextField);
EmailTextField.setColumns(10);
FirstNameTextField = new JTextField();
FirstNameTextField.setBounds(163, 241, 186, 20);
frame.getContentPane().add(FirstNameTextField);
FirstNameTextField.setColumns(10);
LastNameTextField = new JTextField();
LastNameTextField.setBounds(163, 286, 186, 20);
frame.getContentPane().add(LastNameTextField);
LastNameTextField.setColumns(10);
MobileNumberTextField = new JTextField();
MobileNumberTextField.setBounds(163, 331, 186, 20);
frame.getContentPane().add(MobileNumberTextField);
MobileNumberTextField.setColumns(10);
JCheckBox TermsConditionsCheckBox = new JCheckBox("Yes, i agree to the Terms and Conditions.*");
TermsConditionsCheckBox.setBounds(115, 418, 266, 23);
frame.getContentPane().add(TermsConditionsCheckBox);
JCheckBox EmailOffersCheckBox = new JCheckBox("Yes, i wish to receiver Email offers from Zalando.");
EmailOffersCheckBox.setBounds(115, 444, 319, 23);
frame.getContentPane().add(EmailOffersCheckBox);
JLabel lblEmailAddress = new JLabel("Email Address*");
lblEmailAddress.setBounds(47, 71, 106, 14);
frame.getContentPane().add(lblEmailAddress);
lblPassword = new JLabel("Password*");
lblPassword.setBounds(65, 112, 88, 14);
frame.getContentPane().add(lblPassword);
lblConfirmPassword = new JLabel("Confirm password*");
lblConfirmPassword.setBounds(25, 143, 128, 14);
frame.getContentPane().add(lblConfirmPassword);
MrsMsBTN = new JRadioButton("Mrs./Ms.");
MrsMsBTN.setSelected(true);
MrsMsBTN.setBounds(138, 211, 76, 23);
frame.getContentPane().add(MrsMsBTN);
MrBTN = new JRadioButton("Mr.");
MrBTN.setBounds(216, 211, 109, 23);
frame.getContentPane().add(MrBTN);
lblTitle = new JLabel("Title*");
lblTitle.setBounds(95, 216, 37, 14);
frame.getContentPane().add(lblTitle);
lblFirstName = new JLabel("First name*");
lblFirstName.setBounds(65, 244, 88, 14);
frame.getContentPane().add(lblFirstName);
lblLastName = new JLabel("Last name*");
lblLastName.setBounds(65, 289, 88, 14);
frame.getContentPane().add(lblLastName);
lblMobileNumber = new JLabel("Mobile Number");
lblMobileNumber.setBounds(47, 334, 106, 14);
frame.getContentPane().add(lblMobileNumber);
lblNewCustomer = new JLabel("New Customer");
lblNewCustomer.setFont(new Font("Tahoma", Font.BOLD, 16));
lblNewCustomer.setBounds(25, 37, 149, 14);
frame.getContentPane().add(lblNewCustomer);
lblDeliveryInformation = new JLabel("Delivery information");
lblDeliveryInformation.setFont(new Font("Tahoma", Font.PLAIN, 12));
lblDeliveryInformation.setBounds(10, 181, 109, 14);
frame.getContentPane().add(lblDeliveryInformation);
lblInCaseWe = new JLabel("In case we need to contact you about your order");
lblInCaseWe.setFont(new Font("Tahoma", Font.PLAIN, 10));
lblInCaseWe.setBounds(163, 362, 251, 14);
frame.getContentPane().add(lblInCaseWe);
lblMandatoryField = new JLabel("* mandatory field");
lblMandatoryField.setFont(new Font("Tahoma", Font.ITALIC, 11));
lblMandatoryField.setBounds(25, 478, 100, 14);
frame.getContentPane().add(lblMandatoryField);
ConfirmPasswordField = new JPasswordField();
ConfirmPasswordField.setBounds(163, 142, 186, 20);
frame.getContentPane().add(ConfirmPasswordField);
PasswordField = new JPasswordField();
PasswordField.setBounds(163, 112, 186, 20);
frame.getContentPane().add(PasswordField);
JComboBox comboBox = new JComboBox();
comboBox.setBounds(163, 391, 186, 20);
//comboBox.add("Facebook.com", comboBox);
frame.getContentPane().add(comboBox);
JLabel lblHowDidYou = new JLabel("How did you find us?*");
//ADD OPTIONS TO WHERE YOU FOUND US
lblHowDidYou.setBounds(25, 394, 128, 14);
frame.getContentPane().add(lblHowDidYou);
}
public void DBConnect(){
try{
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/zalando", "root","");
st = con.createStatement();
}catch(Exception ex){
System.out.println("Error: " +ex);
}
}
}
}

In most probability you have problem connecting to DB, so your connection object "con" is null hence the
java.lang.NullPointerException
java:119
at PreparedStatement preparedStatement=con.prepareStatement(sql);

JLabel does not show value from another class

I have two GUI classes. When I click a row in JTable in the first user interface, the second interface should display the corresponding values in JLabels.
But the second user interface does not show the values.
Here's my first GUI class:
public class ChequeGUI extends JFrame {
public String chqNo;
public String payName;
public double chkAmount = 10;
public Date chkDate;
JTable guiTable = new JTable();
DefaultTableModel model = new DefaultTableModel(new Object[][]{},new String[]{"Cheque Number","Payee Name","Cheque Amount","Cheque Date"});
public ChequeGUI() throws SQLException {
guiTable.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e){
//guiTable.getTableHeader().getDefaultRenderer();
int row = guiTable.getSelectedRow();
chqNo = (String) guiTable.getValueAt(row,0);
payName = (String) guiTable.getValueAt(row,1);
chkAmount = (Double) guiTable.getValueAt(row,2);
chkDate = (Date) guiTable.getValueAt(row, 3);
try {
PrintChequeGUI pcg = new PrintChequeGUI();
pcg.setTitle("Print Cheque");
pcg.setVisible(true);
System.out.println(chqNo);
System.out.println(payName);
System.out.println(chkAmount);
System.out.println(chkDate);
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
guiTable.setModel(model);
add(new JScrollPane(guiTable));
DBConnection connection = new DBConnection();
//Populate Table
ChequeDAOImpl chqdi = new ChequeDAOImpl();
chqdi.setConnection(connection);
List<Cheque> cheques = chqdi.getCheques();
for(Cheque cq : cheques){
model.addRow(new Object[]{cq.getChqNum(), cq.getName(),cq.getAmount(),cq.getDate()});
}
}
}
This is my second GUI class:
public class PrintChequeGUI extends JFrame {
private JPanel contentPane;
private JTextField txtAmount;
/**
* Create the frame.
* #throws SQLException
*/
public PrintChequeGUI() throws SQLException {
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 480, 400);
contentPane = new JPanel();
contentPane.setBackground(new Color(176, 224, 230));
contentPane.setForeground(SystemColor.inactiveCaption);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(10, 11, 454, 84);
contentPane.add(panel);
JPanel panel_1 = new JPanel();
panel_1.setBackground(new Color(220, 220, 220));
panel_1.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
panel_1.setBounds(10, 106, 454, 198);
contentPane.add(panel_1);
panel_1.setLayout(null);
JLabel lblNewLabel_1 = new JLabel("Date:");
lblNewLabel_1.setBounds(327, 11, 40, 14);
panel_1.add(lblNewLabel_1);
JLabel lblDate = new JLabel();
lblDate.setBounds(368, 11, 69, 14);
panel_1.add(lblDate);
JLabel lblNewLabel_2 = new JLabel("Payee to the Order of");
lblNewLabel_2.setBounds(10, 50, 125, 14);
panel_1.add(lblNewLabel_2);
JLabel lblName = new JLabel();
lblName.setBounds(134, 50, 214, 14);
panel_1.add(lblName);
JLabel lblRs = new JLabel("Rs.");
lblRs.setBounds(351, 50, 24, 14);
panel_1.add(lblRs);
JLabel lblAmount = new JLabel();
lblAmount.setBounds(375, 50, 69, 14);
panel_1.add(lblAmount);
txtAmount = new JTextField();
txtAmount.setBounds(10, 83, 338, 20);
panel_1.add(txtAmount);
txtAmount.setColumns(10);
JLabel lblRupees = new JLabel("Rupees");
lblRupees.setBounds(351, 86, 46, 14);
panel_1.add(lblRupees);
JLabel lbl = new JLabel("Cheque Number:");
lbl.setBounds(10, 126, 100, 14);
panel_1.add(lbl);
JLabel lblChequeNum = new JLabel();
lblChequeNum.setBounds(115, 126, 46, 14);
panel_1.add(lblChequeNum);
JLabel lblSig = new JLabel("<<Sig>>");
lblSig.setBounds(321, 151, 90, 14);
panel_1.add(lblSig);
JLabel lblSigName = new JLabel("A.B.C.Test Name");
lblSigName.setBounds(311, 176, 100, 14);
panel_1.add(lblSigName);
JPanel panel_2 = new JPanel();
panel_2.setBackground(new Color(220, 220, 220));
panel_2.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
panel_2.setBounds(10, 315, 454, 40);
contentPane.add(panel_2);
panel_2.setLayout(null);
JButton btnPrint = new JButton("Print");
btnPrint.setBounds(102, 11, 89, 23);
panel_2.add(btnPrint);
JButton btnBack = new JButton("Back");
btnBack.setBounds(263, 11, 89, 23);
panel_2.add(btnBack);
ChequeGUI gui = new ChequeGUI();
lblChequeNum.setText(gui.chqNo);
lblAmount.setText(Double.toString(gui.chkAmount));
lblName.setText(gui.payName);
lblDate.setText(String.valueOf(gui.chkDate));
}
}

This can be solved in many ways:
1.
As I mentioned in my comment, Pass the current instance of ChequeGUI to the constructor of PrintChequeGUI and use that instance instead of creating new one in PrintChequeGUI
PrintChequeGUI pcg = new PrintChequeGUI(this);
and in PrintChequeGUI class
public PrintChequeGUI(ChequeGUI gui) throws SQLException {
(but i think its not a good approach)
2.
For Better option, Pass the selected instance of Cheque to PrintChequeGUI as constructor argument. For this you need to create a TableModel with instance of Cheque.
Sample is given below:
package com.test;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
public class ChequeGUI extends JFrame {
JTable guiTable = new JTable();
ChequeTableModel model;
public ChequeGUI() throws SQLException {
guiTable.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// guiTable.getTableHeader().getDefaultRenderer();
int row = guiTable.getSelectedRow();
Cheque c = model.getChequeByRow(row);
try {
PrintChequeGUI pcg = new PrintChequeGUI(c);
pcg.setTitle("Print Cheque");
pcg.setVisible(true);
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
model = new ChequeTableModel();
guiTable.setModel(model);
add(new JScrollPane(guiTable));
model.loadData();
}
public class ChequeTableModel extends AbstractTableModel {
List<Cheque> dataModel;
String[] columns = { "Cheque Number", "Payee Name", "Cheque Amount",
"Cheque Date" };
public ChequeTableModel() {
super();
dataModel = new ArrayList<Cheque>();
}
#Override
public int getColumnCount() {
return columns.length;
}
#Override
public String getColumnName(int column) {
return columns[column];
}
#Override
public int getRowCount() {
return dataModel.size();
}
#Override
public Object getValueAt(int row, int column) {
Object value = null;
Cheque c = getChequeByRow(row);
switch (column) {
case 0:
value = c.chqNo;
break;
case 1:
value = c.payName;
break;
case 2:
value = c.chkAmount;
break;
case 3:
value = c.chkDate;
break;
default:
break;
}
return value;
}
public Cheque getChequeByRow(int row) {
if (dataModel.size() <= 0)
return null;
if (row < 0)
return null;
return dataModel.get(row);
}
public void loadData() {
/*
*
* //Uncomment this for database connection and load data from
* database; //Please note to disconnect database if not needed
*
*
* DBConnection connection = new DBConnection();
*
* // Populate Table ChequeDAOImpl chqdi = new ChequeDAOImpl();
* chqdi.setConnection(connection); List<Cheque> cheques =
* chqdi.getCheques();
*
* for (Cheque cq : cheques) { model.addRow(new Object[] {
* cq.getChqNum(), cq.getName(), cq.getAmount(), cq.getDate() }); }
*/
for (int i = 0; i < 10; i++) {
Cheque c = new Cheque();
c.chkAmount = i * 1000;
c.chqNo = String.valueOf(i);
c.chkDate = new Date(System.currentTimeMillis());
dataModel.add(c);
}
fireTableRowsInserted(0, dataModel.size());
}
}
public static void main(String[] args) throws SQLException {
ChequeGUI c = new ChequeGUI();
c.pack();
c.setVisible(true);
}
}
Second class
package com.test;
import java.awt.Color;
import java.awt.SystemColor;
import java.sql.SQLException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
public class PrintChequeGUI extends JFrame {
private JPanel contentPane;
private JTextField txtAmount;
/**
* Create the frame.
*
* #throws SQLException
*/
public PrintChequeGUI(Cheque cheque) throws SQLException {
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 480, 400);
contentPane = new JPanel();
contentPane.setBackground(new Color(176, 224, 230));
contentPane.setForeground(SystemColor.inactiveCaption);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(10, 11, 454, 84);
contentPane.add(panel);
JPanel panel_1 = new JPanel();
panel_1.setBackground(new Color(220, 220, 220));
panel_1.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
panel_1.setBounds(10, 106, 454, 198);
contentPane.add(panel_1);
panel_1.setLayout(null);
JLabel lblNewLabel_1 = new JLabel("Date:");
lblNewLabel_1.setBounds(327, 11, 40, 14);
panel_1.add(lblNewLabel_1);
JLabel lblDate = new JLabel();
lblDate.setBounds(368, 11, 69, 14);
panel_1.add(lblDate);
JLabel lblNewLabel_2 = new JLabel("Payee to the Order of");
lblNewLabel_2.setBounds(10, 50, 125, 14);
panel_1.add(lblNewLabel_2);
JLabel lblName = new JLabel();
lblName.setBounds(134, 50, 214, 14);
panel_1.add(lblName);
JLabel lblRs = new JLabel("Rs.");
lblRs.setBounds(351, 50, 24, 14);
panel_1.add(lblRs);
JLabel lblAmount = new JLabel();
lblAmount.setBounds(375, 50, 69, 14);
panel_1.add(lblAmount);
txtAmount = new JTextField();
txtAmount.setBounds(10, 83, 338, 20);
panel_1.add(txtAmount);
txtAmount.setColumns(10);
JLabel lblRupees = new JLabel("Rupees");
lblRupees.setBounds(351, 86, 46, 14);
panel_1.add(lblRupees);
JLabel lbl = new JLabel("Cheque Number:");
lbl.setBounds(10, 126, 100, 14);
panel_1.add(lbl);
JLabel lblChequeNum = new JLabel();
lblChequeNum.setBounds(115, 126, 46, 14);
panel_1.add(lblChequeNum);
JLabel lblSig = new JLabel("<<Sig>>");
lblSig.setBounds(321, 151, 90, 14);
panel_1.add(lblSig);
JLabel lblSigName = new JLabel("A.B.C.Test Name");
lblSigName.setBounds(311, 176, 100, 14);
panel_1.add(lblSigName);
JPanel panel_2 = new JPanel();
panel_2.setBackground(new Color(220, 220, 220));
panel_2.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
panel_2.setBounds(10, 315, 454, 40);
contentPane.add(panel_2);
panel_2.setLayout(null);
JButton btnPrint = new JButton("Print");
btnPrint.setBounds(102, 11, 89, 23);
panel_2.add(btnPrint);
JButton btnBack = new JButton("Back");
btnBack.setBounds(263, 11, 89, 23);
panel_2.add(btnBack);
// ChequeGUI gui = new ChequeGUI();
lblChequeNum.setText(cheque.chqNo);
lblAmount.setText(Double.toString(cheque.chkAmount));
lblName.setText(cheque.payName);
lblDate.setText(String.valueOf(cheque.chkDate));
}
}
The Cheque class you already used to get details from database

Inheriting from a JFrame class to another class and using the variables

I'm new in java, and I'm working on a program using GUI. My problem is that I'm reaching 1000 Line and this is stressful because all my code are in one file. I'm not liking this. So I research the internet about Inheritance. However, I'm not sure how this can help me in my problem because all what I know about Inheritance that Inherit everything in the parent class. However, when I try to use a variables in the child class I can't for example let say that I have in the parent class something like this:
JButton getButton = new JButton("Enter");
now when I go to the child class. I want to Inherit and use this variable so I can use the ActionListener it's not working.
So could any tell me what I'm I doing wrong here, or this not the right way to do it ?
Thank you everyone before and after.
Here is some of my code:
public class H_Store extends JFrame {
private JCheckBox groundMeatCheckBox;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
H_Store frame = new H_Store();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public H_Store() {
super("Hussin Store");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 1378, 657);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu mnFile = new JMenu("File");
menuBar.add(mnFile);
JMenu mnHelp = new JMenu("Help");
menuBar.add(mnHelp);
mainPane = new JPanel();
mainPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(mainPane);
mainPane.setLayout(new GridLayout(0, 2, 0, 0));
JPanel meetPanel = new JPanel();
meetPanel.setBorder(new SoftBevelBorder(BevelBorder.LOWERED, null, null, null, null));
mainPane.add(meetPanel);
JLabel meatLabel = new JLabel("*Meat*");
meatLabel.setBounds(546, 101, 79, 77);
meatLabel.setHorizontalAlignment(SwingConstants.LEFT);
meatLabel.setFont(new Font("Times New Roman", Font.PLAIN, 25));
///////////////////
JCheckBox groundMeatCheckBox = new JCheckBox("Ground ");
groundMeatCheckBox.setBounds(8, 71, 113, 25);
groundMeatCheckBox.setVerticalAlignment(SwingConstants.BOTTOM);
groundMeatCheckBox.setHorizontalAlignment(SwingConstants.LEFT);
meetPanel.setLayout(null);
meetPanel.add(meatLabel);
meetPanel.add(groundMeatCheckBox);
JCheckBox chuckMeatCheckBox = new JCheckBox("Chuck");
chuckMeatCheckBox.setBounds(8, 126, 113, 25);
meetPanel.add(chuckMeatCheckBox);
JCheckBox ribMeatCheckBox = new JCheckBox("Rib");
ribMeatCheckBox.setBounds(8, 101, 113, 25);
meetPanel.add(ribMeatCheckBox);
JCheckBox steakMeatCheckBox = new JCheckBox("Steak");
steakMeatCheckBox.setBounds(8, 153, 120, 25);
meetPanel.add(steakMeatCheckBox);
JCheckBox flankMeatCheckBox = new JCheckBox("Flank");
flankMeatCheckBox.setBounds(8, 183, 113, 25);
meetPanel.add(flankMeatCheckBox);
JCheckBox roundMeatCheckBox = new JCheckBox("Round");
roundMeatCheckBox.setBounds(8, 213, 113, 25);
meetPanel.add(roundMeatCheckBox);
ground_M_QTextField = new JTextField(10);
ground_M_QTextField.setText("0");
ground_M_QTextField.setBounds(155, 76, 18, 16);
meetPanel.add(ground_M_QTextField);
ground_M_QTextField.setColumns(10);
chuck_M_QTextField = new JTextField();
chuck_M_QTextField.setText("0");
chuck_M_QTextField.setColumns(10);
chuck_M_QTextField.setBounds(155, 105, 18, 16);
meetPanel.add(chuck_M_QTextField);
rib_M_QTextField = new JTextField();
rib_M_QTextField.setText("0");
rib_M_QTextField.setColumns(10);
rib_M_QTextField.setBounds(155, 130, 18, 16);
meetPanel.add(rib_M_QTextField);
steak_M_QTextField = new JTextField();
steak_M_QTextField.setText("0");
steak_M_QTextField.setColumns(10);
steak_M_QTextField.setBounds(155, 157, 18, 16);
meetPanel.add(steak_M_QTextField);
flank_M_QTextField = new JTextField();
flank_M_QTextField.setText("0");
flank_M_QTextField.setColumns(10);
flank_M_QTextField.setBounds(155, 187, 18, 16);
meetPanel.add(flank_M_QTextField);
round_M_QTextField = new JTextField();
round_M_QTextField.setText("0");
round_M_QTextField.setColumns(10);
round_M_QTextField.setBounds(155, 217, 18, 16);
meetPanel.add(round_M_QTextField);
JLabel lblType = new JLabel("Type:");
lblType.setFont(new Font("Tahoma", Font.BOLD, 13));
lblType.setBounds(8, 46, 44, 16);
meetPanel.add(lblType);
JLabel lblNewLabel = new JLabel("Quantity:");
lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 13));
lblNewLabel.setBounds(155, 46, 61, 16);
meetPanel.add(lblNewLabel);
ground_M_WTextField = new JTextField();
ground_M_WTextField.setText("0.00");
ground_M_WTextField.setColumns(10);
ground_M_WTextField.setBounds(291, 73, 36, 16);
meetPanel.add(ground_M_WTextField);
chuck_M_WTextField = new JTextField();
chuck_M_WTextField.setText("0.00");
chuck_M_WTextField.setColumns(10);
chuck_M_WTextField.setBounds(291, 105, 36, 16);
meetPanel.add(chuck_M_WTextField);
rib_M_WTextField = new JTextField();
rib_M_WTextField.setText("0.00");
rib_M_WTextField.setColumns(10);
rib_M_WTextField.setBounds(291, 130, 36, 16);
meetPanel.add(rib_M_WTextField);
steak_M_WTextField = new JTextField();
steak_M_WTextField.setText("0.00");
steak_M_WTextField.setColumns(10);
steak_M_WTextField.setBounds(291, 157, 36, 16);
meetPanel.add(steak_M_WTextField);
flank_M_WTextField = new JTextField();
flank_M_WTextField.setText("0.00");
flank_M_WTextField.setColumns(10);
flank_M_WTextField.setBounds(291, 187, 36, 16);
meetPanel.add(flank_M_WTextField);
round_M_WTextField = new JTextField();
round_M_WTextField.setText("0.00");
round_M_WTextField.setColumns(10);
round_M_WTextField.setBounds(291, 217, 36, 16);
meetPanel.add(round_M_WTextField);
JLabel lblWeightlp = new JLabel("(LP) Weight: ");
lblWeightlp.setFont(new Font("Tahoma", Font.BOLD, 13));
lblWeightlp.setBounds(291, 46, 86, 16);
meetPanel.add(lblWeightlp);
at_M_QTextField = new JTextField();
at_M_QTextField.setText("0");
at_M_QTextField.setColumns(10);
at_M_QTextField.setBounds(155, 251, 18, 16);
meetPanel.add(at_M_QTextField);
at_M_WTextField = new JTextField();
at_M_WTextField.setText("0.00");
at_M_WTextField.setColumns(10);
at_M_WTextField.setBounds(291, 251, 36, 16);
meetPanel.add(at_M_WTextField);
at_meat_TextField = new JTextField();
at_meat_TextField.setText("Another Type..");
at_meat_TextField.setColumns(10);
at_meat_TextField.setBounds(8, 250, 98, 24);
meetPanel.add(at_meat_TextField);
lblPrice = new JLabel("(LP)Price:");
lblPrice.setFont(new Font("Tahoma", Font.BOLD, 13));
lblPrice.setBounds(446, 46, 73, 16);
meetPanel.add(lblPrice);
ground_M_PTextField = new JTextField();
ground_M_PTextField.setText("0.00");
ground_M_PTextField.setColumns(10);
ground_M_PTextField.setBounds(445, 71, 36, 16);
meetPanel.add(ground_M_PTextField);
rib_M_PTextField = new JTextField();
rib_M_PTextField.setText("0.00");
rib_M_PTextField.setColumns(10);
rib_M_PTextField.setBounds(445, 103, 36, 16);
meetPanel.add(rib_M_PTextField);
chuck_M_PTextField = new JTextField();
chuck_M_PTextField.setText("0.00");
chuck_M_PTextField.setColumns(10);
chuck_M_PTextField.setBounds(445, 128, 36, 16);
meetPanel.add(chuck_M_PTextField);
steak_M_PTextField = new JTextField();
steak_M_PTextField.setText("0.00");
steak_M_PTextField.setColumns(10);
steak_M_PTextField.setBounds(445, 155, 36, 16);
meetPanel.add(steak_M_PTextField);
flank_M_PTextField = new JTextField();
flank_M_PTextField.setText("0.00");
flank_M_PTextField.setColumns(10);
flank_M_PTextField.setBounds(445, 185, 36, 16);
meetPanel.add(flank_M_PTextField);
round_M_PTextField = new JTextField();
round_M_PTextField.setText("0.00");
round_M_PTextField.setColumns(10);
round_M_PTextField.setBounds(445, 215, 36, 16);
meetPanel.add(round_M_PTextField);
at_M_PTextField = new JTextField();
at_M_PTextField.setText("0.00");
at_M_PTextField.setColumns(10);
at_M_PTextField.setBounds(445, 249, 36, 16);
meetPanel.add(at_M_PTextField);
JPanel chikenPanel = new JPanel();
chikenPanel.setBorder(new SoftBevelBorder(BevelBorder.LOWERED, null, Color.BLUE, null, null));
mainPane.add(chikenPanel);
chikenPanel.setLayout(null);
JLabel lblChiken = new JLabel("*Chiken*");
lblChiken.setBounds(543, 104, 120, 77);
lblChiken.setFont(new Font("Times New Roman", Font.PLAIN, 25));
chikenPanel.add(lblChiken);
JCheckBox whole_C_CheckBox = new JCheckBox("Whole");
whole_C_CheckBox.setVerticalAlignment(SwingConstants.BOTTOM);
whole_C_CheckBox.setHorizontalAlignment(SwingConstants.LEFT);
whole_C_CheckBox.setBounds(12, 66, 113, 25);
chikenPanel.add(whole_C_CheckBox);
JCheckBox half_C_CheckBox = new JCheckBox("Half");
half_C_CheckBox.setBounds(12, 96, 113, 25);
chikenPanel.add(half_C_CheckBox);
JCheckBox breast_C_CheckBox = new JCheckBox("Breast");
breast_C_CheckBox.setBounds(12, 126, 113, 25);
chikenPanel.add(breast_C_CheckBox);
JCheckBox wings_C_CheckBox = new JCheckBox("Wings");
wings_C_CheckBox.setBounds(12, 156, 120, 25);
chikenPanel.add(wings_C_CheckBox);
JCheckBox liver_C_CheckBox = new JCheckBox("Liver");
liver_C_CheckBox.setBounds(12, 186, 113, 25);
chikenPanel.add(liver_C_CheckBox);
JCheckBox heart_C_CheckBox = new JCheckBox("Heart");
heart_C_CheckBox.setBounds(12, 216, 113, 25);
chikenPanel.add(heart_C_CheckBox);
textField_13 = new JTextField();
textField_13.setText("0");
textField_13.setColumns(10);
textField_13.setBounds(170, 71, 25, 16);
chikenPanel.add(textField_13);
textField_14 = new JTextField();
textField_14.setText("0");
textField_14.setColumns(10);
textField_14.setBounds(170, 97, 25, 16);
chikenPanel.add(textField_14);
textField_15 = new JTextField();
textField_15.setText("0");
textField_15.setColumns(10);
textField_15.setBounds(170, 130, 25, 16);
chikenPanel.add(textField_15);
textField_16 = new JTextField();
textField_16.setText("0");
textField_16.setColumns(10);
textField_16.setBounds(170, 160, 25, 16);
chikenPanel.add(textField_16);
textField_17 = new JTextField();
textField_17.setText("0");
textField_17.setColumns(10);
textField_17.setBounds(170, 190, 25, 16);
chikenPanel.add(textField_17);
textField_18 = new JTextField();
textField_18.setText("0");
textField_18.setColumns(10);
textField_18.setBounds(170, 220, 25, 16);
chikenPanel.add(textField_18);
textField_19 = new JTextField();
textField_19.setText("0.00");
textField_19.setColumns(10);
textField_19.setBounds(320, 220, 38, 16);
chikenPanel.add(textField_19);
textField_20 = new JTextField();
textField_20.setText("0.00");
textField_20.setColumns(10);
textField_20.setBounds(320, 190, 38, 16);
chikenPanel.add(textField_20);
textField_21 = new JTextField();
textField_21.setText("0.00");
textField_21.setColumns(10);
textField_21.setBounds(320, 157, 38, 16);
chikenPanel.add(textField_21);
textField_22 = new JTextField();
textField_22.setText("0.00");
textField_22.setColumns(10);
textField_22.setBounds(320, 130, 38, 16);
chikenPanel.add(textField_22);
textField_23 = new JTextField();
textField_23.setText("0.00");
textField_23.setColumns(10);
textField_23.setBounds(320, 100, 38, 16);
chikenPanel.add(textField_23);
textField_24 = new JTextField();
textField_24.setText("0.00");
textField_24.setColumns(10);
textField_24.setBounds(320, 71, 38, 16);
chikenPanel.add(textField_24);
JLabel label = new JLabel("Type:");
label.setFont(new Font("Tahoma", Font.BOLD, 13));
label.setBounds(12, 41, 56, 16);
chikenPanel.add(label);
JLabel label_1 = new JLabel("Quantity:");
label_1.setFont(new Font("Tahoma", Font.BOLD, 13));
label_1.setBounds(170, 41, 75, 16);
chikenPanel.add(label_1);
JLabel label_2 = new JLabel("(LP) Weight: ");
label_2.setFont(new Font("Tahoma", Font.BOLD, 13));
label_2.setBounds(320, 41, 92, 16);
chikenPanel.add(label_2);
textField_12 = new JTextField();
textField_12.setText("Another Type..");
textField_12.setColumns(10);
textField_12.setBounds(12, 250, 99, 24);
chikenPanel.add(textField_12);
textField_34 = new JTextField();
textField_34.setText("0");
textField_34.setColumns(10);
textField_34.setBounds(170, 251, 25, 16);
chikenPanel.add(textField_34);
textField_35 = new JTextField();
textField_35.setText("0.00");
textField_35.setColumns(10);
textField_35.setBounds(320, 251, 38, 16);
chikenPanel.add(textField_35);
label_5 = new JLabel("Price:");
label_5.setFont(new Font("Tahoma", Font.BOLD, 13));
label_5.setBounds(477, 41, 43, 16);
chikenPanel.add(label_5);
textField_7 = new JTextField();
textField_7.setText("0.00");
textField_7.setColumns(10);
textField_7.setBounds(477, 71, 36, 16);
chikenPanel.add(textField_7);
textField_8 = new JTextField();
textField_8.setText("0.00");
textField_8.setColumns(10);
textField_8.setBounds(477, 100, 36, 16);
chikenPanel.add(textField_8);
textField_9 = new JTextField();
textField_9.setText("0.00");
textField_9.setColumns(10);
textField_9.setBounds(476, 130, 36, 16);
chikenPanel.add(textField_9);
textField_10 = new JTextField();
textField_10.setText("0.00");
textField_10.setColumns(10);
textField_10.setBounds(476, 160, 36, 16);
chikenPanel.add(textField_10);
textField_11 = new JTextField();
textField_11.setText("0.00");
textField_11.setColumns(10);
textField_11.setBounds(477, 190, 36, 16);
chikenPanel.add(textField_11);
textField_25 = new JTextField();
textField_25.setText("0.00");
textField_25.setColumns(10);
textField_25.setBounds(477, 220, 36, 16);
chikenPanel.add(textField_25);
textField_32 = new JTextField();
textField_32.setText("0.00");
textField_32.setColumns(10);
textField_32.setBounds(477, 254, 36, 16);
chikenPanel.add(textField_32);
JPanel otherThingsPanel = new JPanel();
otherThingsPanel.setBorder(new SoftBevelBorder(BevelBorder.LOWERED, null, null, null, null));
mainPane.add(otherThingsPanel);
otherThingsPanel.setLayout(null);
JLabel lblOtherThings = new JLabel("*Other Things*");
lblOtherThings.setBounds(421, 117, 176, 42);
lblOtherThings.setFont(new Font("Tahoma", Font.PLAIN, 25));
otherThingsPanel.add(lblOtherThings);
JLabel label_3 = new JLabel("Type:");
label_3.setFont(new Font("Tahoma", Font.BOLD, 13));
label_3.setBounds(16, 46, 65, 16);
otherThingsPanel.add(label_3);
JCheckBox chckbxCheese = new JCheckBox("Cheese");
chckbxCheese.setVerticalAlignment(SwingConstants.BOTTOM);
chckbxCheese.setHorizontalAlignment(SwingConstants.LEFT);
chckbxCheese.setBounds(12, 71, 113, 25);
otherThingsPanel.add(chckbxCheese);
JCheckBox chckbxBread = new JCheckBox("Bread");
chckbxBread.setBounds(12, 101, 113, 25);
otherThingsPanel.add(chckbxBread);
JCheckBox chckbxRice = new JCheckBox("Rice");
chckbxRice.setBounds(12, 131, 113, 25);
otherThingsPanel.add(chckbxRice);
JCheckBox chckbxBeefBurger = new JCheckBox("Burger ");
chckbxBeefBurger.setBounds(12, 161, 120, 25);
otherThingsPanel.add(chckbxBeefBurger);
JCheckBox chckbxChickenBurger = new JCheckBox("Kebab");
chckbxChickenBurger.setBounds(12, 191, 113, 25);
otherThingsPanel.add(chckbxChickenBurger);
JCheckBox chckbxFalafel = new JCheckBox("Falafel");
chckbxFalafel.setBounds(12, 221, 113, 25);
otherThingsPanel.add(chckbxFalafel);
textField_26 = new JTextField();
textField_26.setText("0");
textField_26.setColumns(10);
textField_26.setBounds(165, 225, 25, 16);
otherThingsPanel.add(textField_26);
textField_27 = new JTextField();
textField_27.setText("0");
textField_27.setColumns(10);
textField_27.setBounds(165, 195, 25, 16);
otherThingsPanel.add(textField_27);
textField_28 = new JTextField();
textField_28.setText("0");
textField_28.setColumns(10);
textField_28.setBounds(165, 162, 25, 16);
otherThingsPanel.add(textField_28);
textField_29 = new JTextField();
textField_29.setText("0");
textField_29.setColumns(10);
textField_29.setBounds(165, 132, 25, 16);
otherThingsPanel.add(textField_29);
textField_30 = new JTextField();
textField_30.setText("0");
textField_30.setColumns(10);
textField_30.setBounds(165, 102, 25, 16);
otherThingsPanel.add(textField_30);
textField_31 = new JTextField();
textField_31.setText("0");
textField_31.setColumns(10);
textField_31.setBounds(165, 76, 25, 16);
otherThingsPanel.add(textField_31);
JLabel label_4 = new JLabel("Quantity:");
label_4.setFont(new Font("Tahoma", Font.BOLD, 13));
label_4.setBounds(165, 46, 65, 16);
otherThingsPanel.add(label_4);
otherThings_AnotherTypeTextField = new JTextField();
otherThings_AnotherTypeTextField.setText("Another Type..");
otherThings_AnotherTypeTextField.setColumns(10);
otherThings_AnotherTypeTextField.setBounds(16, 250, 93, 24);
otherThingsPanel.add(otherThings_AnotherTypeTextField);
textField_36 = new JTextField();
textField_36.setText("0");
textField_36.setColumns(10);
textField_36.setBounds(165, 254, 25, 16);
otherThingsPanel.add(textField_36);
label_6 = new JLabel("Price:");
label_6.setFont(new Font("Tahoma", Font.BOLD, 13));
label_6.setBounds(310, 46, 56, 16);
otherThingsPanel.add(label_6);
textField_33 = new JTextField();
textField_33.setText("0.00");
textField_33.setColumns(10);
textField_33.setBounds(309, 71, 36, 16);
otherThingsPanel.add(textField_33);
textField_37 = new JTextField();
textField_37.setText("0.00");
textField_37.setColumns(10);
textField_37.setBounds(309, 103, 36, 16);
otherThingsPanel.add(textField_37);
textField_38 = new JTextField();
textField_38.setText("0.00");
textField_38.setColumns(10);
textField_38.setBounds(309, 128, 36, 16);
otherThingsPanel.add(textField_38);
textField_39 = new JTextField();
textField_39.setText("0.00");
textField_39.setColumns(10);
textField_39.setBounds(309, 155, 36, 16);
otherThingsPanel.add(textField_39);
textField_40 = new JTextField();
textField_40.setText("0.00");
textField_40.setColumns(10);
textField_40.setBounds(309, 185, 36, 16);
otherThingsPanel.add(textField_40);
textField_41 = new JTextField();
textField_41.setText("0.00");
textField_41.setColumns(10);
textField_41.setBounds(309, 215, 36, 16);
otherThingsPanel.add(textField_41);
textField_42 = new JTextField();
textField_42.setText("0.00");
textField_42.setColumns(10);
textField_42.setBounds(309, 249, 36, 16);
otherThingsPanel.add(textField_42);
JPanel calculationPanel = new JPanel();
calculationPanel.setBorder(new SoftBevelBorder(BevelBorder.LOWERED, null, null, null, null));
mainPane.add(calculationPanel);
calculationPanel.setLayout(null);
JLabel lblCalculation = new JLabel("*Calculation*");
lblCalculation.setBounds(212, 12, 148, 29);
lblCalculation.setFont(new Font("Times New Roman", Font.PLAIN, 25));
calculationPanel.add(lblCalculation);
// Calculation everything
JButton calculateButton = new JButton("Calculate");
calculateButton.addActionListener(new CalcButtonListener());
calculateButton.setFont(new Font("Tahoma", Font.PLAIN, 25));
calculateButton.setBounds(340, 177, 313, 97);
calculationPanel.add(calculateButton);
txtrWriteYourComment = new JTextArea();
txtrWriteYourComment.setRows(1);
txtrWriteYourComment.setFont(new Font("Courier New", Font.PLAIN, 12));
txtrWriteYourComment.setText("Write Your Comment here.....");
txtrWriteYourComment.setBounds(12, 54, 641, 111);
calculationPanel.add(txtrWriteYourComment);
getProfitJButton = new JButton("Get Profit");
getProfitJButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFrame frame2 = new JFrame("Profit");
frame2.setVisible(true);
frame2.setSize(350,200);
frame2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
profitPanel = new JPanel();
profitPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(profitPanel);
profitPanel.setLayout(new GridLayout(0, 2, 0, 0));
frame2.getContentPane().add(profitPanel);
profitFileButton = new JButton("Porfit File");
profitFileTextField = new JTextField();
getProfitJButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
profitJFileChooser = new JFileChooser();
profitJFileChooser.showOpenDialog(null);
File f = profitJFileChooser.getSelectedFile();
String fileName = f.getAbsolutePath();
profitFileTextField.setText(fileName);
}
});
profitPanel.add(profitFileButton);
profitPanel.add(profitFileTextField);
sellFileButtton = new JButton("Sell File");
profitPanel.add(sellFileButtton);
}
});
getProfitJButton.setFont(new Font("Tahoma", Font.PLAIN, 25));
getProfitJButton.setBounds(12, 177, 316, 97);
calculationPanel.add(getProfitJButton);
///////////////////////////////////////////
theholder holder = new theholder();
groundMeatCheckBox.addItemListener(holder);
}
private class CalcButtonListener implements ActionListener{
// vairbles for the ground Meat check box
private double total_GM;
private double weightPrice_1;
private String stringQ;
private String stringW;
private String stringP;
private int meat_Q1;
private double meat_W1;
private double meat_P1;
public void actionPerformed(ActionEvent e){
total_GM = 0;
// The ground Meat check box calculation
stringQ = ground_M_QTextField.getText();
meat_Q1 = Integer.parseInt(stringQ);
stringW = ground_M_WTextField.getText();
meat_W1 = Double.parseDouble(stringW);
stringP = ground_M_PTextField.getText();
meat_P1 = Double.parseDouble(stringP);
weightPrice_1 = meat_W1 * meat_P1;
total_GM += weightPrice_1 * meat_Q1;
JOptionPane.showMessageDialog(null, total_GM + "\n" + s);
}
}
}
What I want to do exactly is to take the last code into another class or do something with so I can use it in the Parent class, in other word any math I want outside the Parent class.
Note: I mean this code
private class CalcButtonListener implements ActionListener{
// vairbles for the ground Meat check box
private double total_GM;
private double weightPrice_1;
private String stringQ;
private String stringW;
private String stringP;
private int meat_Q1;
private double meat_W1;
private double meat_P1;
public void actionPerformed(ActionEvent e){
total_GM = 0;
// The ground Meat check box calculation
stringQ = ground_M_QTextField.getText();
meat_Q1 = Integer.parseInt(stringQ);
stringW = ground_M_WTextField.getText();
meat_W1 = Double.parseDouble(stringW);
stringP = ground_M_PTextField.getText();
meat_P1 = Double.parseDouble(stringP);
weightPrice_1 = meat_W1 * meat_P1;
total_GM += weightPrice_1 * meat_Q1;
JOptionPane.showMessageDialog(null, total_GM + "\n" + s);
}
}

You state:
My problem is that I'm reaching 1000 Line and this is stressful because all my code are in one file. I'm not liking this.
You are quite right to not like this and to try to improve this set up as this type of program will be a monster to maintain, debug and enhance..
You then state:
Inheriting from a JFrame class to another class and using the variables
This is not what inheritance is for as objects of the child class will be a completely distinct entities from objects of the parent class, so you will not want to do this.
Instead
Remember to strive to enhance by composition rather than inheritance, meaning have classes contain fields of other classes.
Avoid using the static modifier to make global-like variables as this will hog-tie your code.
try to break out logical parts of your program from the visual, the GUI parts,
And split up each specific logical part and each major GUI part into its own class.
make sure all classes have decent setter and getter methods,
and that the classes are written so that they communicate well with each other.
A Swing specific recommendation is for you to avoid extending JFrame.
Instead gear your Swing GUI's towards creating JPanels, panels which can be placed anywhere you want them, including in JFrames, JApplets, JDialogs, JOptionPanes, inside of other JPanels, in JTabbedPanes, as "cards" in a CardLayout-using JPanel,....
This will greatly improve the flexibility and enhance-ability of your program.
For more specific help, please feel free to provide more details about your program and its code.
Edit
Sorry to be blunt, but you've come for advice on your code, and I have to inform you that it has some significant problems including:
it contains more quite a bit of unnecessary redundency that makes it hard to follow and debug.
You have grids of JTextFields, all of which can and should be replaced by three JTables, one for Meat, one for Chicken, and one for "other things".
You use null layouts and absolute positioning, something that seems to a newbie an easier way to create complex GUI's, but in the long run is the most difficult way to create, maintain and upgrade these. You're far better off learning about and using the layout managers, including nesting JPanels each with its own layout.
Any time I see variables named something12, something13, something14, something15, something16, something17, something18, ... I think that most of this can be replaced by an array or a collection such as an ArrayList, or in your case (as noted above), a JTable whose model is based in a collection.
Each one of your table entries should likely be in its own class.
I stand by my original recommendation that you should not have any of your classes inherit from the main GUI as this will lead to non-workable code.
Also, your JFrame should not launch another JFrame, but rather the getProfitButton should launch a modal JDialog.
Edit
For example:
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class TableEg extends JPanel {
private static final String[] ROW_TITLES = { "Sunday", "Monday", "Tuesday",
"Wednesday", "Thursday", "Friday", "Saturday" };
MyTableModel tableModel = new MyTableModel(ROW_TITLES);
private JTable table;
public TableEg() {
table = new JTable(tableModel) {
#Override
public TableCellRenderer getCellRenderer(int row, int column) {
JComponent renderer = (JComponent) super.getCellRenderer(row,
column);
boolean enabled = (Boolean) table.getValueAt(row, 0);
renderer.setEnabled(enabled);
return super.getCellRenderer(row, column);
}
};
table.addMouseListener(new MouseAdapter() {
#Override
public void mouseReleased(MouseEvent e) {
super.mouseReleased(e);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
table.repaint();
}
});
}
});
JScrollPane scrollpane = new JScrollPane(table);
scrollpane.getViewport().setPreferredSize(table.getPreferredSize());
JButton getSumButton = new JButton(new GetSumAction("Get Sum", tableModel));
JPanel southPanel = new JPanel();
southPanel.add(getSumButton);
setLayout(new BorderLayout());
add(scrollpane, BorderLayout.CENTER);
add(southPanel, BorderLayout.SOUTH);
}
private static void createAndShowGui() {
TableEg mainPanel = new TableEg();
JFrame frame = new JFrame("TableEg");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
class MyTableModel extends DefaultTableModel {
private static final String[] COLUMN_NAMES = { "Selected", "Name", "Number" };
public MyTableModel(String[] rowTitles) {
super(COLUMN_NAMES, 0);
for (int i = 0; i < rowTitles.length; i++) {
Object[] rowData = { Boolean.FALSE, rowTitles[i], Integer.valueOf(0) };
addRow(rowData);
}
Object[] rowData = { Boolean.FALSE, "", Integer.valueOf(0) };
addRow(rowData);
}
#Override
public boolean isCellEditable(int row, int column) {
if (column == 0) {
return true;
}
if (column == 1) {
return row >= getRowCount() - 1;
}
if (column > 1) {
return ((Boolean) getValueAt(row, 0)).booleanValue();
}
return super.isCellEditable(row, column);
}
#Override
public Class<?> getColumnClass(int columnIndex) {
switch (columnIndex) {
case 0:
return Boolean.class;
case 1:
return String.class;
case 2:
return Integer.class;
}
return super.getColumnClass(columnIndex);
}
}
class GetSumAction extends AbstractAction {
private MyTableModel tableModel;
public GetSumAction(String name, MyTableModel tableModel) {
super(name);
this.tableModel = tableModel;
}
#Override
public void actionPerformed(ActionEvent evt) {
int sum = 0;
for (int i = 0; i < tableModel.getRowCount(); i++) {
Object value = tableModel.getValueAt(i, 2);
if (value != null) {
sum += ((Integer) value).intValue();
}
}
String text = "Number of days: " + sum;
String title = "Number of Days";
JOptionPane.showMessageDialog((JButton) evt.getSource(), text, title,
JOptionPane.INFORMATION_MESSAGE);
}
}

First of all try to divide your code into methods, that would make your code more clear.
As for inheritance, you can only modify variables that are in the parent class from the child class if those variable are :
.Data members
.Their visibility is set to protected
Here is an example
public class Parent{
protected JButton button;
protected int something;
protected String whatever;
//^Those are the data members
public Parent(){//Constructor
//some code here
}
//more code
}//end of parent class
public class Child extends Parent{
private int randomstuff;
private String morerandomDatamembers;
public Child(){
super();
}
public void modify(){
something=3;
whatever="yayyy it worked";
}
}
protected data members can only be accessed by the children of some class.
EDIT- Inheritance can be used in specific cases. You can still modify data members of some class from a different class. Every method should have getters and setters.
Example:
public class Car{
private int ModelNumber;
private String CarName;
public Car(int ModelNum,String name){
ModelNumber=ModelNum;
CarName=name;
}
public int getModelNum(){//First getter
return ModelNumber;
}
public void setModelNum(int ModelNum){//First setter
ModelNumber=ModelNum;
}
public String getCarName(){//Second getter;
return CarName;
}
public void setCarName(String Car){
CarName=Car;
}
}
public class Company{
private Car car;
public Company(Car c){
car=c;
}
public void modify(){
car.setModelNum(123);
car.setCarName("Ferrari");
System.out.println("Being so awesome,Roudy will let me try his Ferrari");
}
}

java app querying database returning nullpointerexception

I'm having a problem with my code in java. It is supposed to insert data into a database but it's returning a nullpointerexception. Here is my code.
package client;
import java.sql.*;
import java.awt.Desktop;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
public class AddCon {
private Connection conn;
private JFrame frmAddContract;
private JTextField ContractNo;
private JTextField EngagerName;
private JTextField contNo;
private JTextField month;
private JTextField day;
private JTextField year;
private JTextField tme;
private JTextField cladd;
private JTextField eventadd;
private JTextField textField_fp;
private JTextField refer;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
AddCon window = new AddCon();
window.frmAddContract.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public AddCon() {
try{
//Load database driver and connect
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/KusinaNiKambal","root","1234");
Statement stmt = null;
stmt = conn.createStatement();}
catch (Exception e){
JOptionPane.showMessageDialog(null, e);}
/**
* Initialize the contents of the frame.
*/
initialize();
}
private void initialize() {
frmAddContract = new JFrame();
frmAddContract.setResizable(false);
frmAddContract.setTitle("Add Contract");
frmAddContract.setBounds(100, 100, 450, 640);
frmAddContract.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmAddContract.getContentPane().setLayout(null);
ContractNo = new JTextField();
ContractNo.setBounds(38, 32, 152, 20);
frmAddContract.getContentPane().add(ContractNo);
ContractNo.setColumns(10);
JLabel lblContract = new JLabel("Contract #");
lblContract.setBounds(38, 18, 76, 14);
frmAddContract.getContentPane().add(lblContract);
JLabel lblEngager = new JLabel("Engager");
lblEngager.setBounds(38, 63, 48, 14);
frmAddContract.getContentPane().add(lblEngager);
EngagerName = new JTextField();
EngagerName.setBounds(38, 78, 152, 20);
frmAddContract.getContentPane().add(EngagerName);
EngagerName.setColumns(10);
contNo = new JTextField();
contNo.setBounds(38, 128, 152, 20);
frmAddContract.getContentPane().add(contNo);
contNo.setColumns(10);
JLabel lblNewLabel = new JLabel("Contact #");
lblNewLabel.setBounds(38, 109, 86, 14);
frmAddContract.getContentPane().add(lblNewLabel);
month = new JTextField();
month.setBounds(38, 255, 116, 20);
frmAddContract.getContentPane().add(month);
day = new JTextField();
day.setBounds(181, 255, 81, 20);
frmAddContract.getContentPane().add(day);
year = new JTextField();
year.setBounds(294, 255, 86, 20);
frmAddContract.getContentPane().add(year);
year.setColumns(10);
JLabel lblMonth = new JLabel("Month in number format");
lblMonth.setBounds(38, 236, 100, 14);
frmAddContract.getContentPane().add(lblMonth);
JLabel lblDay = new JLabel("Day");
lblDay.setBounds(181, 236, 48, 14);
frmAddContract.getContentPane().add(lblDay);
JLabel lblYear = new JLabel("Year");
lblYear.setBounds(294, 236, 48, 14);
frmAddContract.getContentPane().add(lblYear);
JLabel lblEventDate = new JLabel("Event Date");
lblEventDate.setBounds(38, 222, 76, 14);
frmAddContract.getContentPane().add(lblEventDate);
tme = new JTextField();
tme.setBounds(38, 307, 59, 20);
frmAddContract.getContentPane().add(tme);
tme.setColumns(10);
cladd = new JTextField();
cladd.setBounds(38, 180, 363, 31);
frmAddContract.getContentPane().add(cladd);
cladd.setColumns(10);
JLabel lblAddress = new JLabel("Client Address");
lblAddress.setBounds(38, 159, 98, 14);
frmAddContract.getContentPane().add(lblAddress);
JLabel lblTime = new JLabel("Time");
lblTime.setBounds(38, 286, 60, 14);
frmAddContract.getContentPane().add(lblTime);
eventadd = new JTextField();
eventadd.setBounds(38, 358, 373, 50);
frmAddContract.getContentPane().add(eventadd);
eventadd.setColumns(10);
JLabel lblEventAddress = new JLabel("Event Address");
lblEventAddress.setBounds(38, 338, 116, 14);
frmAddContract.getContentPane().add(lblEventAddress);
textField_fp = new JTextField();
textField_fp.setBounds(38, 454, 276, 20);
frmAddContract.getContentPane().add(textField_fp);
textField_fp.setColumns(10);
JLabel lblFilepathOfContract = new JLabel("Filepath of Contract - the PDF file");
lblFilepathOfContract.setBounds(38, 431, 116, 14);
frmAddContract.getContentPane().add(lblFilepathOfContract);
JButton btnBrowse = new JButton("Browse...");
btnBrowse.setBounds(324, 453, 89, 23);
frmAddContract.getContentPane().add(btnBrowse);
btnBrowse.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
final JFileChooser fc = new JFileChooser();
int returnVal = fc.showOpenDialog(null);
String filepath = fc.getSelectedFile().getAbsolutePath();
textField_fp.setText(filepath);
}
});
refer = new JTextField();
refer.setBounds(38, 510, 276, 20);
frmAddContract.getContentPane().add(refer);
refer.setColumns(10);
JLabel lblEncodedBy = new JLabel("Referred By");
lblEncodedBy.setBounds(38, 485, 116, 14);
frmAddContract.getContentPane().add(lblEncodedBy);
JButton btnAdd = new JButton("Add");
btnAdd.setBounds(101, 560, 89, 23);
frmAddContract.getContentPane().add(btnAdd);
btnAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
try{
String cntr = ContractNo.getText();
String en = EngagerName.getText();
String cont = contNo.getText();
String mo = month.getText();
String d = day.getText();
String yr = year.getText();
String dte = yr + "-" + mo + "-" + d;
String cla = cladd.getText();
String tm = tme.getText() + ":00";
String evadd = eventadd.getText();
String filepath = textField_fp.getText();
String ref = refer.getText();
String SQL = "insert into cis "+
"values ('"+cntr+"','"+en+"','"+
cont+"','"+cla+"' '"+dte+"','"+tm+"','"+
evadd+"','"+filepath+"','"+ref+")";
PreparedStatement stmt = conn.prepareStatement(SQL);
ResultSet rs = stmt.executeQuery();
}
catch(Exception e){
JOptionPane.showMessageDialog(null, e);
}
}
});
JButton btnCancel = new JButton("Cancel");
btnCancel.setBounds(225, 560, 89, 23);
frmAddContract.getContentPane().add(btnCancel);
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
frmAddContract.setVisible(false);
}
});
}
}
Sorry, i'm not really that experienced in java programming and this is my first time making a code for querying databases.

You do never initialize your conn instance variable. This will lead to a NullPointerException (at least) in this line:
PreparedStatement stmt = conn.prepareStatement(SQL);
^------------ NEVER INITIALIZED
public class AddCon {
private Connection conn;
...
// constructor
public AddCon() {
try{
//Load database driver and connect
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(<your parameters>);
^----------- MISTAKE
...
In the above code you create a connection, but instead of assigning it to the instance variable you just use a local variable. Replace that line with:
this.conn = DriverManager.getConnection(<your parameters>);
Edit: Please always post the stacktrace in case of exceptions!

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

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