whenever I uncomment my JTextField or JComboBox they make all my swing elements disappear, I've tried resizing them and manipulating them in any way but I have no clue as to why the stuff is disappearing. They weren't on a previous program I wrote and they're wrote the exact same way. They elements even disappear if the two objects aren't even added to the panel.
Here's the code I have for my program. I don't really want to separate the 2 panels into their own Classes.
import java.awt.*;
import javax.swing.*;
public class Main {
public static void main(String[] args) {
// Create window
JFrame window = new Window();
String[] optionsToChoose = {"Car Parts", "Fast Food", "Groceries", "Clothing", "Gas", "Store", "Entertainment"};
// Create first screen
JPanel startPanel = new JPanel();
startPanel.setLayout(null);
startPanel.setBounds(230, 230, 500, 250);
startPanel.setBackground(new Color(177, 177, 177));
JLabel header = new JLabel("CHOOSE AN ACTION");
header.setForeground(Color.white);
header.setFont(new Font("Verdana", Font.BOLD, 20));
header.setHorizontalAlignment(JLabel.CENTER);
header.setBounds(0, -25, 500, 150);
JButton add = new JButton("ADD");
add.setBackground(new Color(0, 109, 91));
add.setForeground(Color.white);
add.setFont(new Font("Verdana", Font.BOLD, 15));
add.setBounds(90, 125, 150, 50);
JButton view = new JButton("VIEW REPORT");
view.setBackground(new Color(167, 199, 231));
view.setForeground(Color.white);
view.setFont(new Font("Verdana", Font.BOLD, 15));
view.setBounds(270, 125, 150, 50);
startPanel.add(view);
startPanel.add(add);
startPanel.add(header);
startPanel.setVisible(false);
// Create second screen
JPanel addPanel = new JPanel();
addPanel.setBounds(230, 220, 500, 300);
addPanel.setLayout(null);
addPanel.setBackground(Color.black);
JLabel header2 = new JLabel("INPUT DATA BELOW:");
header2.setBounds(0, -25, 500, 150);
header2.setFont(new Font("Verdana", Font.BOLD, 20));
header2.setHorizontalAlignment(JLabel.CENTER);
header2.setForeground(Color.white);
JLabel costHeader = new JLabel("COST:");
costHeader.setForeground(Color.white);
costHeader.setFont(new Font("Verdana", Font.BOLD, 20));
costHeader.setBounds(90, 75, 150, 50);
JLabel typeHeader = new JLabel("TYPE:");
typeHeader.setBounds(300, 75, 150, 50);
typeHeader.setForeground(Color.WHITE);
typeHeader.setFont(new Font("Verdana", Font.BOLD, 20));
JTextField costInput = new JTextField("$0", 10);
costInput.setFont(new Font("Verdana", Font.PLAIN, 20));
costInput.setBounds(90, 150, 150, 50);
costInput.setForeground(Color.white);
JComboBox<String> jComboBox = new JComboBox<>(optionsToChoose);
jComboBox.setFont(new Font("Verdana", Font.PLAIN, 20));
jComboBox.setBounds(0, 0, 150, 50);
addPanel.add(jComboBox);
addPanel.add(costInput);
addPanel.add(typeHeader);
addPanel.add(header2);
addPanel.add(costHeader);
addPanel.setVisible(true);
// Add components
window.add(startPanel);
window.add(addPanel);
}
}
Here's the Window class as well:
import java.awt.Color;
import javax.swing.JFrame;
public class Window extends JFrame {
public Window() {
this.setTitle("Finance Tracker");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
this.setLayout(null);
//this.setLocationRelativeTo(null);
this.setSize(1000, 800);
this.setVisible(true);
this.getContentPane().setBackground(new Color(177, 177, 177));
}
}
If anyone has any idea as to why this could be happening, any help is appreciated. Thanks!
Related
I know the code is bad and easy. I am a starter and need some help. I want to add a second button to my code. I feel like I changed the coordinates of the button so it doesn't "fall" on the first one. Any suggestions? (Also, .this is a bit unknown to me so I just copy - pasted it hoping it doesnt affect the second button. I feel like it has to do with .this and the coordinates of the button I entered).
import java.awt.*;
import java.awt.event.*;
public class CalculatorGUI extends Frame implements ActionListener
{
static Operand op;
TextField display;
Button button0;
Button button1;
public CalculatorGUI(String title, Operand op)
{
super(title);
CalculatorGUI.op = op;
this.setLayout(null);
this.setFont(new Font("TimesRoman", Font.PLAIN, 14));
this.setBackground(Color.blue);
button0 = new Button("0");
button0.setBounds(64, 265, 35, 28);
button0.setFont(new Font("TimesRoman", Font.PLAIN, 14));
button0.setForeground(Color.blue);
button0.setFocusable(false);
button0.addActionListener(this);
this.add(button0);
this.setSize(283,320);
this.setLocation(40,30);
this.setVisible(true);
this.setResizable(false);
button1 = new Button("1");
button1.setBounds(64, 230, 35, 28);
button1.setFont(new Font("TimesRoman", Font.PLAIN, 14));
button1.setForeground(Color.blue);
button1.setFocusable(false);
button1.addActionListener(this);
this.add(button1);
this.setSize(283,320);
this.setLocation(40,30);
this.setVisible(true);
this.setResizable(false);
this.addWindowListener(new CloseWindowAndExit());
display = new TextField("");
display.setEditable(false);
display.setBounds(13, 55, 257, 30);
this.add(display);
}
class CloseWindowAndExit extends WindowAdapter
{
public void windowClosing(WindowEvent closeWindowAndExit)
{
System.exit(0);
}
}
#Override
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==button0)
{
display.setText("Button0 is pressed");
CalculatorGUI.op.addDigit('0');
}
}
}
Do not add buttons directly to the main frame. Instead, create another panel and add the buttons to it:
Panel newPanel = new Panel(new GridBagLayout());
Button button0 = new Button("BUTTON_0");
button0.setBounds(10, 265, 30, 30);
button0.setFont(new Font("TimesRoman", Font.PLAIN, 14));
button0.setForeground(Color.blue);
button0.setFocusable(false);
Button button1 = new Button("BUTTON_1");
button1.setBounds(10, 265, 30, 30);
button1.setFont(new Font("TimesRoman", Font.PLAIN, 14));
button1.setForeground(Color.blue);
button1.setFocusable(false);
newPanel.add(button0);
newPanel.add(button1);
this.add(newPanel);
I am trying to make a simple calculator program with Java. When I added a JTextField however it made all the button and the field itself invisible until I hover over it. If I comment out the text field everything goes back to normal and all the button are visible.
Here is my code:
import java.awt.*;
import javax.swing.*;
public class Calculator extends JFrame {
// Numbers
JButton btn_zero;
JButton btn_one;
JButton btn_two;
JButton btn_three;
JButton btn_four;
JButton btn_five;
JButton btn_six;
JButton btn_seven;
JButton btn_eight;
JButton btn_nine;
// Operators
JButton btn_add;
JButton btn_subtract;
JButton btn_multiply;
JButton btn_divide;
JButton btn_equals;
JButton btn_decimal;
JButton btn_pm;
JButton btn_clear;
// Panel
JPanel buttonPanel;
// Dimensions
final int WIDTH = 340;
final int HEIGHT = 500;
public Calculator() {
// Characteristics of frame
super("Calculator");
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Insets frameInsets = getInsets();
int frameWidth = WIDTH + (frameInsets.left + frameInsets.right);
int frameHeight = HEIGHT + (frameInsets.top + frameInsets.bottom);
setPreferredSize(new Dimension(frameWidth, frameHeight));
//setLayout(null);
pack();
setVisible(true);
// Add values to all buttons
btn_zero = new JButton("0");
btn_one = new JButton("1");
btn_two = new JButton("2");
btn_three = new JButton("3");
btn_four = new JButton("4");
btn_five = new JButton("5");
btn_six = new JButton("6");
btn_seven = new JButton("7");
btn_eight = new JButton("8");
btn_nine = new JButton("9");
btn_add = new JButton("+");
btn_subtract = new JButton("-");
btn_multiply = new JButton("×");
btn_divide = new JButton("÷");
btn_equals = new JButton("=");
btn_decimal = new JButton(".");
btn_pm = new JButton("±");
btn_clear = new JButton("C");
// Adds the panel
buttonPanel = new JPanel();
buttonPanel.setSize(new Dimension(frameWidth, frameHeight));
buttonPanel.setLayout(null);
// Textfield
JTextField AnswerBox = new JTextField ("");
AnswerBox.setBounds(0, 0, 320, 70);
buttonPanel.add(AnswerBox);
//Buttons
btn_decimal.setBounds(70, 100, 50, 50);
buttonPanel.add(btn_decimal);
btn_pm.setBounds(130, 100, 50, 50);
buttonPanel.add(btn_pm);
btn_clear.setBounds(190, 100, 50, 50);
buttonPanel.add(btn_clear);
btn_add.setBounds(250, 100, 50, 50);
buttonPanel.add(btn_add);
btn_subtract.setBounds(250, 160, 50, 50);
buttonPanel.add(btn_subtract);
btn_multiply.setBounds(250, 220, 50, 50);
buttonPanel.add(btn_multiply);
btn_divide.setBounds(250, 280, 50, 50);
buttonPanel.add(btn_divide);
btn_equals.setBounds(10, 350, 290, 50);
buttonPanel.add(btn_equals);
btn_zero.setBounds(190, 160, 50, 170);
buttonPanel.add(btn_zero);
btn_one.setBounds(10, 160, 50, 50);
buttonPanel.add(btn_one);
btn_two.setBounds(70, 160 , 50, 50);
buttonPanel.add(btn_two);
btn_three.setBounds(130, 160, 50, 50);
buttonPanel.add(btn_three);
btn_four.setBounds(10, 220, 50, 50);
buttonPanel.add(btn_four);
btn_five.setBounds(70, 220, 50, 50);
buttonPanel.add(btn_five);
btn_six.setBounds(130, 220, 50, 50);
buttonPanel.add(btn_six);
btn_seven.setBounds(10, 280, 50, 50);
buttonPanel.add(btn_seven);
btn_eight.setBounds(70, 280, 50, 50);
buttonPanel.add(btn_eight);
btn_nine.setBounds(130, 280, 50, 50);
buttonPanel.add(btn_nine);
buttonPanel.setVisible(true);
add(buttonPanel);
}
}
Also the code is also right now just showing the buttons of the calculator, and not actually doing anything, because I want to focus on fixing this bug.
Call revalidate() after you add all the widgets to recalculate the layout of the container (in your case a JFrame):
buttonPanel.setVisible(true);
add(buttonPanel);
revalidate();
Calling revalidate() at the end would work or you can simply put
setVisible(true)
to the end of your constructor.
When I run this code ( having simple buttons and a LOGIN button with an action listener), it terminates without running and without showing screen.
I have tried System.exit(0); in main function to overcome this terminating issue but all in vain
public class HOme extends JFrame{
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int width = (int) screenSize.getWidth();
int height = (int) screenSize.getHeight();
Color cardinal = new Color(194, 35, 38);
int w=155;
int h=50;
public HOme(String title) {
super(title);
getContentPane().setSize(width,height);
getContentPane().setBackground(Color.WHITE);
getContentPane().setLayout(null);
final JPanel panel2 = new JPanel();
panel2.setBounds(364, 33, 664, 344);
getContentPane().add(panel2);
JPanel panel3 = new JPanel();
panel3.setBackground(Color.WHITE);
panel3.setBounds(81, 382, 947, 243);
getContentPane().add(panel3);
panel3.setLayout(null);
JButton btnHome = new JButton("Home");
btnHome.setFont(new Font("Times New Roman", Font.PLAIN, 20));
btnHome.setForeground(Color.WHITE);
btnHome.setBackground(cardinal);
btnHome.setBounds(517, 33, w, h);
btnHome.setContentAreaFilled(false);
btnHome.setOpaque(true);
panel3.add(btnHome);
JButton btnClients = new JButton("Clients");
btnClients.setFont(new Font("Times New Roman", Font.PLAIN, 20));
btnClients.setForeground(Color.WHITE);
btnClients.setBounds(690, 33, w, h);
btnClients.setBackground(cardinal);
btnClients.setContentAreaFilled(false);
btnClients.setOpaque(true);
panel3.add(btnClients);
JButton btnClose = new JButton("Close");
btnClose.setFont(new Font("Times New Roman", Font.PLAIN, 20));
btnClose.setForeground(Color.WHITE);
btnClose.setBounds(690, 198, w, h);
btnClose.setBackground(cardinal);
btnClose.setContentAreaFilled(false);
btnClose.setOpaque(true);
panel3.add(btnClose);
JButton btnLogin = new JButton("Admin Login");
btnLogin.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
Login l=new Login();
panel2.add(l);
}
});
btnLogin.setFont(new Font("Times New Roman", Font.PLAIN, 20));
btnLogin.setForeground(Color.WHITE);
btnLogin.setBounds(517, 116, w, h);
btnLogin.setBackground(cardinal);
btnLogin.setContentAreaFilled(false);
btnLogin.setOpaque(true);
panel3.add(btnLogin);
JPanel panel1 = new JPanel();
panel1.setBorder(new EtchedBorder(EtchedBorder.LOWERED, new Color(204, 51, 0), null));
panel1.setBackground(Color.WHITE);
panel1.setBounds(81, 33, 263, 344);
getContentPane().add(panel1);
panel1.setLayout(null);
JButton btnStartMonitoring = new JButton("");
btnStartMonitoring.setIcon(new ImageIcon(path1));
btnStartMonitoring.setBackground(cardinal);
btnStartMonitoring.setForeground(Color.WHITE);
btnStartMonitoring.setFont(new Font("Tahoma", Font.PLAIN, 15));
btnStartMonitoring.setBounds(10, 274, 239, 59);
panel1.add(btnStartMonitoring);
JLabel lblLogo = new JLabel("New label");
lblLogo.setIcon(new ImageIcon(path2));
lblLogo.setBounds(0, 11, 263, 253);
panel1.add(lblLogo);
}
public static void main(String args[]) {
new HOme("HOme");
//System.exit(0);
}
}
Edited
I have a login class extended from JPanel. When I click on Login Button from Home. It is not showing Login panel
Login.class
public class Login extends JPanel {
private JTextField txtPassword;
private JTextField txtID;
Color cardinal = new Color(194, 35, 38);
int w=155;
int h=50;
public Login() {
setBackground(Color.WHITE);
setLayout(null);
JLabel lblLogin = new JLabel("Login ");
lblLogin.setBackground(Color.ORANGE);
lblLogin.setHorizontalAlignment(SwingConstants.RIGHT);
lblLogin.setFont(new Font("Trajan Pro", Font.BOLD, 36));
lblLogin.setBounds(125, 0, 424, 59);
lblLogin.setBackground(cardinal);
//lblLogin.setContentAreaFilled(false);
lblLogin.setOpaque(true);
lblLogin.setForeground(Color.white);
add(lblLogin);
JLabel lblId = new JLabel("ID");
lblId.setHorizontalAlignment(SwingConstants.RIGHT);
lblId.setFont(new Font("Tekton Pro", Font.PLAIN, 23));
lblId.setBounds(181, 127, 66, 28);
add(lblId);
JLabel lblPassword = new JLabel("Password");
lblPassword.setHorizontalAlignment(SwingConstants.RIGHT);
lblPassword.setFont(new Font("Tekton Pro", Font.PLAIN, 23));
lblPassword.setBounds(136, 188, 111, 28);
add(lblPassword);
txtPassword = new JTextField();
lblPassword.setLabelFor(txtPassword);
txtPassword.setBounds(266, 183, 256, 41);
lblPassword.setForeground(cardinal);
add(txtPassword);
txtPassword.setColumns(10);
txtID = new JTextField();
lblId.setLabelFor(txtID);
txtID.setBounds(266, 123, 256, 39);
lblId.setForeground(cardinal);
add(txtID);
txtID.setColumns(10);
JButton btnLogin = new JButton("Login");
btnLogin.setForeground(Color.WHITE);
btnLogin.setFont(new Font("Times New Roman", Font.PLAIN, 20));
btnLogin.setBounds(324, 294, w, h);
btnLogin.setBackground(cardinal);
btnLogin.setContentAreaFilled(false);
btnLogin.setOpaque(true);
add(btnLogin);
setVisible(true);
}
You are not making your JFrame visible.
You can do either -
In your constructor, make it visible by adding the following line at the end -
setVisible(true);
Or in your main() function you can do -
HOme h = new HOme("HOme");
h.setVisible(true);
Answer to second part:
Import MouseListener, import java.awt.event.MouseListener;
Construct a MouseListener somewhere, include action of the button
Where you define btnLogin, add a line btnLogin.addMouseListener(<name of MouseListener>);
An example: http://www.java2s.com/Code/Java/Swing-JFC/ButtonActionSample.htm
Add something like setVisible(true); at the end of the HOme method.
I just started learning programming and am trying to create a program that calculates the income tax at 20%. the program compiles but keeps getting errors. The error states
Exception in thread "main" java.lang.IllegalArgumentException: adding container's parent to itself
I don't understand what to change.
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
public class IncomeTax extends JFrame
{
// declarations
Color black = new Color(0, 0, 0);
Color white = new Color(255, 255, 255);
Color light_gray = new Color(192, 192, 192);
DecimalFormat currency;
JLabel grossIncomeJLabel;
JTextField grossIncomeJTextField;
JLabel amountTaxedJLabel;
JTextField amountTaxedJTextField;
JTextField currencyJTextField;
JLabel amountDeductedJLabel;
JTextField amountDeductedJTextField;
JLabel netIncomeJLabel;
JTextField netIncomeJTextField;
JButton enterJButton;
JButton clearJButton;
double grossIncome;
double amountTaxed;
double amountDeducted;
double netIncome;
public IncomeTax()
{
createUserInterface();
}
public void createUserInterface()
{
Container contentPane = getContentPane();
contentPane.setBackground(white);
contentPane.setLayout(null);
// initialize components
// input
grossIncomeJLabel = new JLabel ();
grossIncomeJLabel.setBounds (50, 20, 150, 20);
grossIncomeJLabel.setFont(new Font("Default", Font.PLAIN, 12));
grossIncomeJLabel.setText ("Enter Gross Income:");
grossIncomeJLabel.setForeground(black);
grossIncomeJLabel.setHorizontalAlignment(JLabel.LEFT);
contentPane.add(grossIncomeJLabel);
grossIncomeJTextField = new JTextField();
grossIncomeJTextField.setBounds(200, 20, 100, 20);
grossIncomeJTextField.setFont(new Font("Default", Font.PLAIN, 12));
grossIncomeJTextField.setHorizontalAlignment(JTextField.CENTER);
grossIncomeJTextField.setForeground(black);
grossIncomeJTextField.setBackground(white);
grossIncomeJTextField.setEditable(true);
contentPane.add(grossIncomeJTextField);
//outputs
amountTaxedJLabel = new JLabel();
amountTaxedJLabel.setBounds(50, 50, 150, 20);
amountTaxedJLabel.setFont(new Font("Default", Font.PLAIN, 12));
amountTaxedJLabel.setText("Amount Taxed");
amountTaxedJLabel.setForeground(black);
amountTaxedJLabel.setHorizontalAlignment(JLabel.LEFT);
amountTaxedJLabel.add(amountTaxedJLabel);
amountTaxedJTextField = new JTextField();
amountTaxedJTextField.setBounds(200, 50, 100, 20);
amountTaxedJTextField.setFont(new Font("Default", Font.PLAIN, 12));
amountTaxedJTextField.setHorizontalAlignment(JTextField.CENTER);
amountTaxedJTextField.setForeground(black);
amountTaxedJTextField.setBackground(white);
amountTaxedJTextField.setEditable(false);
contentPane.add(amountTaxedJTextField);
amountDeductedJLabel = new JLabel();
amountDeductedJLabel.setBounds(50, 80, 150, 20);
amountDeductedJLabel.setFont(new Font("Default", Font.PLAIN, 12));
amountDeductedJLabel.setText("Amount Deducted:");
amountDeductedJLabel.setForeground(black);
amountDeductedJLabel.setHorizontalAlignment(JLabel.LEFT);
contentPane.add(amountDeductedJLabel);
amountDeductedJTextField = new JTextField();
amountDeductedJTextField.setBounds(200, 80, 100, 20);
amountDeductedJTextField.setFont(new Font("Default", Font.PLAIN, 12));
amountDeductedJTextField.setHorizontalAlignment(JTextField.CENTER);
amountDeductedJTextField.setForeground(black);
amountDeductedJTextField.setBackground(white);
amountDeductedJTextField.setEditable(false);
contentPane.add(amountDeductedJTextField);
netIncomeJLabel = new JLabel();
netIncomeJLabel.setBounds(50, 110, 150, 20);
netIncomeJLabel.setFont(new Font("Default", Font.PLAIN, 12));
netIncomeJLabel.setText("Net Income:");
netIncomeJLabel.setForeground(black);
netIncomeJLabel.setHorizontalAlignment(JLabel.LEFT);
contentPane.add(netIncomeJLabel);
netIncomeJTextField = new JTextField();
netIncomeJTextField.setBounds(200, 110, 100, 20);
netIncomeJTextField.setFont(new Font("Default", Font.PLAIN, 12));
netIncomeJTextField.setHorizontalAlignment(JTextField.CENTER);
netIncomeJTextField.setForeground(black);
netIncomeJTextField.setBackground(white);
netIncomeJTextField.setEditable(false);
contentPane.add(netIncomeJTextField);
// control
enterJButton = new JButton();
enterJButton.setBounds(50, 210, 100, 20);
enterJButton.setFont(new Font("Default", Font.PLAIN, 12));
enterJButton.setText("Enter");
enterJButton.setForeground(black);
enterJButton.setBackground(white);
contentPane.add(enterJButton);
enterJButton.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
enterJButtonActionPerformed(event);
}
}
);
clearJButton = new JButton();
clearJButton.setBounds(200, 210, 100, 20);
clearJButton.setFont(new Font("Default", Font.PLAIN, 12));
clearJButton.setText("Clear");
clearJButton.setForeground(black);
clearJButton.setBackground(white);
contentPane.add(clearJButton);
clearJButton.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
clearJButtonActionPerformed(event);
}
}
);
// set properties of application’s window
setTitle("Income Tax"); // set title
setSize( 400, 400 ); // set window size
setVisible(true); // display window
}
// main method
public static void main(String[] args)
{
IncomeTax application = new IncomeTax();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void enterJButtonActionPerformed(ActionEvent event)
{
// get input
grossIncome = Double.parseDouble(grossIncomeJTextField.getText());
// process data
final double Tax_Rate = .20;
amountTaxed = Tax_Rate;
amountDeducted = grossIncome * Tax_Rate;
netIncome = grossIncome - amountDeducted;
//display results
currency = new DecimalFormat("$0.00");
amountTaxedJTextField.setText("" + currency.format(amountTaxed));
amountDeductedJTextField.setText("" + currency.format(amountDeducted));
netIncomeJTextField.setText("" + currency.format(netIncome));
}
public void clearJButtonActionPerformed(ActionEvent event)
{
grossIncomeJTextField.setText("");
grossIncomeJTextField.requestFocusInWindow();
amountTaxedJTextField.setText("");
amountDeductedJTextField.setText("");
netIncomeJTextField.setText("");
}
}
Here
amountTaxedJLabel.add(amountTaxedJLabel);
I think you meant
contentPane.add(amountTaxedJLabel);
In the prior, you are adding a view to itself.
In the later, you are adding it to your contentPane.
I have two problem now.
My First Problem is when i click the confirm button, it will insert the data two times into ms access database.
My Second Problem is why joptionpane also popup two times.
I have the main login page when open the program.
When i click the sign up button, it will remove all the component inside the center jpanel.
Then it will add again component to use in registration form like jtextfield,jlabel,icon for username,password,tel no and others.I already checked, that the statement to execute insert statement and joptionpanes only have one times only.
This is the full code of my program
package userForm;
import java.sql.*;
import java.util.logging.Handler;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class loginForm extends JFrame implements ActionListener{
private JPanel centerPanel,bottomPanel;
private JLabel titleLabel, descriptionLabel;
private JLabel usernameLabel, passwordLabel, signInLabel, iconUsername, iconPassword;
private JLabel signUpLabel, fullNameLabel, staffIDLabel, usernameRegLabel, passwordRegLabel, telNoLabel, emailLabel;
private JLabel iconFullName, iconStaffID, iconUsernameReg, iconPasswordReg, iconTelNo, iconEmail;
private JTextField usernameField, fullNameField, staffIDField, usernameRegField, telNoField, emailField;
private JPasswordField passwordField, passwordRegField;
private JButton loginButton, signUpButton,confirmButton,exitButton;
private String username;
private String password;
userDatabase db;
userDatabase db1;
handler handle;
public loginForm(String title) {
db=new userDatabase();
handle =new handler();
//create label to use in topPanel
titleLabel = new JLabel("ABC Burger Inventory System");
titleLabel.setFont(new Font("Calibri", Font.TRUETYPE_FONT, 23));
titleLabel.setForeground(Color.white);
Border empty = new EmptyBorder(30, 20, 0, 0);
titleLabel.setBorder(empty);
descriptionLabel = new JLabel("Please Login To Use This System");
Border empty1 = new EmptyBorder(-30, 20, 0, 0);
descriptionLabel.setBorder(empty1);
descriptionLabel.setFont(new Font("Calibri", Font.HANGING_BASELINE, 14));
descriptionLabel.setForeground(Color.white);
//create label to use in centerPanel
signInLabel = new JLabel("SIGN IN");
usernameLabel = new JLabel("Username:");
passwordLabel = new JLabel("Password");
//create textfield to use in center Panel
usernameField = new JTextField("Required");
passwordField = new JPasswordField("Required");
//create label to use in registration form
signUpLabel = new JLabel("SIGN UP");
fullNameLabel = new JLabel("Full Name:");
staffIDLabel = new JLabel("Staff ID:");
usernameRegLabel = new JLabel("Username:");
passwordRegLabel = new JLabel("Password");
telNoLabel = new JLabel("Tel No:");
emailLabel = new JLabel("Email:");
//create textfield to use in registration form
fullNameField = new JTextField(30);
staffIDField = new JTextField(30);
usernameRegField = new JTextField(30);
passwordRegField = new JPasswordField(30);
telNoField = new JTextField(30);
emailField = new JTextField(30);
//create button to use in bottom Panel
loginButton = new JButton("Login");
signUpButton = new JButton("Sign Up");
confirmButton = new JButton("Confirm");
confirmButton.addActionListener(this);
exitButton = new JButton("Exit");
exitButton.addActionListener(this);
//create panel to use in frame
topPanelWithBackground topPanel = new topPanelWithBackground();
topPanel.setLayout(new GridLayout(2,1));
centerPanel = new JPanel();
centerPanel.setLayout(null);
bottomPanel = new JPanel();
bottomPanel.setLayout(new FlowLayout(FlowLayout.CENTER, 40, 10));
//add component to top panel
topPanel.add(titleLabel);
topPanel.add(descriptionLabel);
//add component to center panel
signInLabel.setBounds(270, 30, 100, 20);
signInLabel.setFont(new Font("Calibri", Font.TRUETYPE_FONT, 20));
centerPanel.add(signInLabel);
usernameLabel.setBounds(200, 60, 100, 20);
usernameLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameLabel);
ImageIcon imageUser = new ImageIcon("user.png");
iconUsername = new JLabel(imageUser, JLabel.CENTER);
iconUsername.setBounds(160, 90, 32, 32);
centerPanel.add(iconUsername);
usernameField.setBounds(200, 90, 200, 32);
usernameField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameField);
passwordLabel.setBounds(200, 140, 100, 20);
passwordLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordLabel);
ImageIcon imagePassword = new ImageIcon("password.png");
iconUsername = new JLabel(imagePassword, JLabel.CENTER);
iconUsername.setBounds(160, 170, 32, 32);
centerPanel.add(iconUsername);
passwordField.setBounds(200, 170, 200, 32);
passwordField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordField);
loginButton.setFont(new Font("Calibri", Font.BOLD, 14));
loginButton.addActionListener(handle);
bottomPanel.add(loginButton);
signUpButton.setFont(new Font("Calibri", Font.BOLD, 14));
signUpButton.addActionListener(this);
bottomPanel.add(signUpButton);
//add confirm button
exitButton.setFont(new Font("Calibri", Font.BOLD, 14));
exitButton.addActionListener(this);
bottomPanel.add(exitButton);
getContentPane().setLayout(new BorderLayout());
getContentPane().add(topPanel, BorderLayout.NORTH );
getContentPane().add(centerPanel, BorderLayout.CENTER);
getContentPane().add(bottomPanel, BorderLayout.SOUTH);
//frame behaviour
super.setTitle(title);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//exit
setSize(600,500);
}
class handler implements ActionListener{
public void actionPerformed(ActionEvent as) {
if(as.getSource()==loginButton){
centerPanel.removeAll();
centerPanel.revalidate();
centerPanel.repaint();
//add component to center panel
signInLabel.setBounds(270, 30, 100, 20);
signInLabel.setFont(new Font("Calibri", Font.TRUETYPE_FONT, 20));
centerPanel.add(signInLabel);
usernameLabel.setBounds(200, 60, 100, 20);
usernameLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameLabel);
ImageIcon imageUser = new ImageIcon("user.png");
iconUsername = new JLabel(imageUser, JLabel.CENTER);
iconUsername.setBounds(160, 90, 32, 32);
centerPanel.add(iconUsername);
usernameField.setBounds(200, 90, 200, 32);
usernameField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameField);
passwordLabel.setBounds(200, 140, 100, 20);
passwordLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordLabel);
ImageIcon imagePassword = new ImageIcon("password.png");
iconUsername = new JLabel(imagePassword, JLabel.CENTER);
iconUsername.setBounds(160, 170, 32, 32);
centerPanel.add(iconUsername);
passwordField.setBounds(200, 170, 200, 32);
passwordField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordField);
char[] temp_pwd=passwordField.getPassword();
String pwd=null;
pwd=String.copyValueOf(temp_pwd);
System.out.println("Username,Pwd:"+usernameField.getText()+","+pwd);
//The entered username and password are sent via "checkLogin()" which return boolean
if(db.checkLogin(usernameField.getText(), pwd))
{
newFrame regFace =new newFrame();
regFace.setVisible(true);
dispose();
}
else if(usernameField.getText().equals("") || passwordField.getText().equals("")){
JOptionPane.showMessageDialog(null, "Please fill out the form","Error!!",
JOptionPane.ERROR_MESSAGE);
}
else
{
//a pop-up box
JOptionPane.showMessageDialog(null, "Login failed!","Failed!!",
JOptionPane.ERROR_MESSAGE);
}
}
}
}
#Override
public void actionPerformed(ActionEvent ae) {
if(ae.getSource()==signUpButton){
centerPanel.removeAll();
//sign up label
signUpLabel.setBounds(270, 30, 100, 20);
signUpLabel.setFont(new Font("Calibri", Font.TRUETYPE_FONT, 20));
centerPanel.add(signUpLabel);
//fullname label,icon and field
fullNameLabel.setBounds(80, 60, 100, 20);
fullNameLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(fullNameLabel);
ImageIcon imageFullname = new ImageIcon("fullname.png");
iconUsernameReg = new JLabel(imageFullname, JLabel.CENTER);
iconUsernameReg.setBounds(40, 90, 32, 32);
centerPanel.add(iconUsernameReg);
fullNameField.setBounds(80, 90, 200, 32);
fullNameField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(fullNameField);
//staffID label,icon and field
staffIDLabel.setBounds(80, 140, 100, 20);
staffIDLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(staffIDLabel);
ImageIcon imageStaffID = new ImageIcon("staffID.png");
iconStaffID = new JLabel(imageStaffID, JLabel.CENTER);
iconStaffID.setBounds(40, 170, 32, 32);
centerPanel.add(iconStaffID);
staffIDField.setBounds(80, 170, 200, 32);
staffIDField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(staffIDField);
//usernameReg label,icon and field
usernameRegLabel.setBounds(80, 220, 100, 20);
usernameRegLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameRegLabel);
ImageIcon imageUsernameReg = new ImageIcon("user.png");
iconUsernameReg = new JLabel(imageUsernameReg, JLabel.CENTER);
iconUsernameReg.setBounds(40, 250, 32, 32);
centerPanel.add(iconUsernameReg);
usernameRegField.setBounds(80, 250, 200, 32);
usernameRegField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(usernameRegField);
//passwordReg label,icon and field
passwordRegLabel.setBounds(350, 60, 100, 20);
passwordRegLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordRegLabel);
ImageIcon imagePasswordReg = new ImageIcon("password.png");
iconPasswordReg = new JLabel(imagePasswordReg, JLabel.CENTER);
iconPasswordReg.setBounds(310, 90, 32, 32);
centerPanel.add(iconPasswordReg);
passwordRegField.setBounds(350, 90, 200, 32);
passwordRegField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(passwordRegField);
//telNo label,icon and field
telNoLabel.setBounds(350, 140, 100, 20);
telNoLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(telNoLabel);
ImageIcon imagetelNo = new ImageIcon("phone.png");
iconTelNo = new JLabel(imagetelNo, JLabel.CENTER);
iconTelNo.setBounds(310, 170, 32, 32);
centerPanel.add(iconTelNo);
telNoField.setBounds(350, 170, 200, 32);
telNoField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(telNoField);
//Email label,icon and field
emailLabel.setBounds(350, 220, 100, 20);
emailLabel.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(emailLabel);
ImageIcon imageEmail = new ImageIcon("mail.png");
iconEmail = new JLabel(imageEmail , JLabel.CENTER);
iconEmail .setBounds(310, 250, 32, 32);
centerPanel.add(iconEmail );
emailField.setBounds(350, 250, 200, 32);
emailField.setFont(new Font("Calibri", Font.BOLD, 14));
centerPanel.add(emailField);
//add confirm button
confirmButton.setFont(new Font("Calibri", Font.BOLD, 14));
confirmButton.addActionListener(this);
bottomPanel.add(confirmButton);
centerPanel.revalidate();
centerPanel.repaint();
}
else if(ae.getSource()==confirmButton){
char[] temp_pwd1=passwordRegField.getPassword();
String pwd=null;
pwd=String.copyValueOf(temp_pwd1);
if(fullNameField.getText().equals("") || staffIDField.getText().equals("") || usernameRegField.getText().equals("") || passwordRegField.getPassword().length == 0 || telNoField.getText().equals("") || emailField.getText().equals("")){
JOptionPane.showMessageDialog(null, "Please Fill Out Any Field", "Error",
JOptionPane.ERROR_MESSAGE);
}
else {
db1 = new userDatabase();
try {
db1.insertData(fullNameField.getText(), staffIDField.getText(), usernameRegField.getText(), pwd, telNoField.getText(), emailField.getText());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
else if(ae.getSource()==exitButton){
System.exit(0);
}
}
}
When you click the sign up button you are adding listener to the confirm button again. So when you click the confirm button it is executed twice.
Remove the following line in the actionPerformed method of LoginForm
confirmButton.addActionListener(this);