I am trying to get my JTextArea to display under all other contents of the llpPanel. My code is below with a screenshot of what my code displays. In the code you will see that I have set my dimensions for the JTextArea to (50, 50). Then in the llpPanel I have added BorderLayout.PAGE_END. I have also tried to (instead of PAGE_END) put CENTER and SOUTH. When I put SOUTH, it shows a white line at the very bottom of the program but you cannot do anything with it.
import java.awt.BorderLayout;
import java.awt.ComponentOrientation;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class TestApplication implements ActionListener {
public static void main(String[] args) {
final JFrame frame = new JFrame();
frame.setSize(1000, 1000);
frame.setTitle("RBA Test Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
JButton initialize = new JButton("Initialize");
JButton connect = new JButton("Connect");
JButton disconnect = new JButton("Disconnect");
JButton shutdown = new JButton("Shut Down");
JButton portsettings = new JButton("Port Settings");
JButton online = new JButton("Go Online");
JButton offline = new JButton("Go Offline");
JButton status = new JButton("Status");
JButton reboot = new JButton("Reboot");
JButton account = new JButton("Account");
JButton amount = new JButton("Amount");
JButton reset = new JButton("Reset");
JButton approvordecl = new JButton("Approve / Decline");
JTextArea logbox = new JTextArea(50, 50);
JPanel testPanel = new JPanel();
testPanel.add(button);
testPanel.add(button2);
testPanel.add(checkbox2);
JPanel posPanel = new JPanel();
posPanel.add(test);
posPanel.add(testing);
posPanel.add(checkbox);
JPanel llpPanel = new JPanel();
llpPanel.add(online);
llpPanel.add(offline);
llpPanel.add(status);
llpPanel.add(reboot);
llpPanel.add(account);
llpPanel.add(amount);
llpPanel.add(reset);
llpPanel.add(approvordecl);
llpPanel.add(logbox, BorderLayout.PAGE_END);
JPanel buttonPanel = new JPanel();
buttonPanel.add(initialize);
buttonPanel.add(connect);
buttonPanel.add(disconnect);
buttonPanel.add(shutdown);
buttonPanel.add(portsettings);
frame.add(buttonPanel);
frame.add(buttonPanel, BorderLayout.NORTH);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("LLP", null, llpPanel, "Low Level Protocol");
tabbedPane.addTab("POS",null, posPanel, "Point Of Sale");
tabbedPane.addTab("Test", null, testPanel, "Test");
JPanel tabsPanel = new JPanel(new BorderLayout());
tabsPanel.add(tabbedPane);
frame.add(tabsPanel, BorderLayout.CENTER);
frame.pack();
}
#Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
Updated code with screenshot is below...
import java.awt.BorderLayout;
import java.awt.ComponentOrientation;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class TestApplication implements ActionListener {
public static void main(String[] args) {
final JFrame frame = new JFrame();
frame.setSize(1000, 1000);
frame.setTitle("RBA Test Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
JTextArea logbox = new JTextArea(50, 50);
JButton initialize = new JButton("Initialize");
JButton connect = new JButton("Connect");
JButton disconnect = new JButton("Disconnect");
JButton shutdown = new JButton("Shut Down");
JButton portsettings = new JButton("Port Settings");
JButton online = new JButton("Go Online");
JButton offline = new JButton("Go Offline");
JButton status = new JButton("Status");
JButton reboot = new JButton("Reboot");
JButton account = new JButton("Account");
JButton amount = new JButton("Amount");
JButton reset = new JButton("Reset");
JButton approvordecl = new JButton("Approve / Decline");
JButton test = new JButton("Test Button #1");
JButton testing = new JButton("Test Button #2");
JRadioButton button = new JRadioButton("Radio Button");
JRadioButton button2 = new JRadioButton("Radio Button");
JCheckBox checkbox = new JCheckBox("Check Box");
JCheckBox checkbox2 = new JCheckBox("Check Box");
JPanel newButtonPanel = new JPanel();
newButtonPanel.add(online);
newButtonPanel.add(offline);
newButtonPanel.add(status);
newButtonPanel.add(reboot);
newButtonPanel.add(account);
newButtonPanel.add(amount);
newButtonPanel.add(reset);
newButtonPanel.add(approvordecl);
JPanel testPanel = new JPanel();
testPanel.add(button);
testPanel.add(button2);
testPanel.add(checkbox2);
JPanel posPanel = new JPanel();
posPanel.add(test);
posPanel.add(testing);
posPanel.add(checkbox);
JPanel llpPanel = new JPanel();
llpPanel.setLayout(new BorderLayout());
llpPanel.add(newButtonPanel);
llpPanel.add(logbox, BorderLayout.PAGE_END);
JPanel buttonPanel = new JPanel();
buttonPanel.add(initialize);
buttonPanel.add(connect);
buttonPanel.add(disconnect);
buttonPanel.add(shutdown);
buttonPanel.add(portsettings);
frame.add(buttonPanel);
frame.add(buttonPanel, BorderLayout.NORTH);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("LLP", null, llpPanel, "Low Level Protocol");
tabbedPane.addTab("POS",null, posPanel, "Point Of Sale");
tabbedPane.addTab("Test", null, testPanel, "Test");
JPanel tabsPanel = new JPanel(new BorderLayout());
tabsPanel.add(tabbedPane);
frame.add(tabsPanel, BorderLayout.CENTER);
frame.pack();
}
#Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
JPanels use FlowLayout by default so applying BorderLayout constraints such as PAGE_END will have no effect. You need to set the layout of the panel:
llpPanel.setLayout(new BorderLayout());
Then you will encounter the problem of components displacing themselves in the BorderLayout.CENTER position. The solution is to create another JPanel as a container for the components other than logbox on llpPanel.
JPanel newButtonPanel = new JPanel();
newButtonPanel.add(online);
...
llpPanel.add(newButtonPanel);
JScrollPane scrollPane = new JScrollPane(logbox) {
#Override
public java.awt.Dimension getPreferredSize() {
return new Dimension(500, 500);
};
};
llpPanel.add(scrollPane, BorderLayout.PAGE_END);
Use a JScrollPane rather than adding the JTextArea directly to the container.
Set the component's preferred size property rather than its size, and add it to BorderLayout.SOUTH. For BorderLayout layouts, the container will try to use preferred sizes for the edges (north,south,east and west) and resize the center accordingly.
A short snipped example to illustrate. The view is a panel, which will have the text area at the bottom that is 50 high. This is done by adding the JTextArea component at BorderLayout.SOUTH and set the preferred size property at Dimension(0,50). The rest of the view is filled with a panel. This panel is placed at the BorderLayout.CENTER and will be resized by the layout manager.
JPanel view = new JPanel( );
view.setSize( 800, 600 );
view.setLayout( new BorderLayout( ) );
JPanel topArea = new JPanel( );
JTextArea textArea = new JTextArea( );
textArea.setPreferredSize( new Dimension( 0, 50 ) );
view.add( topArea, BorderLayout.CENTER );
view.add( textArea, BorderLayout.SOUTH );
Related
I want to ask some question about Java GUI, especially on JPanel syntax. I'm really confused how to configure the panel exactly, try to use BorderLayout, and GridLayout, but it still doesn't meet my requirement.
I want to make form like below:
Current Result:
From the image, I need to configure that 2 points
The padding / margin between Input Panel and the Button Panel
The Padding / margin between tablePanel and the inputPanel
Code
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.border.BevelBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import javax.swing.table.DefaultTableModel;
public class manageForm extends JFrame {
//Vector<String> header=new Vector<String>();
//Vector<Vector<String>>data=new Vector<Vector<String>>();
DefaultTableModel defaultTableModel;
JTable table;
JScrollPane scrollPane;
JLabel titleLabel=new JLabel("Manage Handphone");
JTable hpTable = new JTable();
JLabel idLabel = new JLabel("ID");
JLabel nameLabel = new JLabel("Name");
JLabel priceLabel = new JLabel("Price");
JLabel weightLabel = new JLabel("Weight");
JLabel cableLabel = new JLabel("Cable Length");
JLabel typeLabel = new JLabel("Type");
JTextField idtxt = new JTextField();
JTextField nametxt = new JTextField();
JTextField pricetxt = new JTextField();
JTextField weighttxt = new JTextField();
JTextField cabletxt = new JTextField();
JComboBox typeBox = new JComboBox();
JButton insertBtn = new JButton("INSERT");
JButton updateBtn = new JButton("UPDATE");
JButton deleteBtn = new JButton("DELETE");
JButton confirmBtn = new JButton("CONFIRM");
JButton cancelBtn = new JButton("CANCEL");
String header[] = {"ID","Name","Type","Price","Weight","Cable Length"};
String data[][] = {
{"2","Bose Quite","In-Ear","Price","Weight","Cable Length"},
{"2","Bose Quite","In-Ear","Price","Weight","Cable Length"},
{"2","Bose Quite","In-Ear","Price","Weight","Cable Length"}
};
public manageForm() {
JPanel headerPanel = new JPanel();
JPanel tablePanel = new JPanel();
tablePanel.setBorder(new EmptyBorder(0,0,0,0));
JPanel inputPanel = new JPanel(new GridLayout(6,2));
inputPanel.setBorder(new EmptyBorder(20,10,20,10));
//inputPanel.setBorder(new LineBorder(Color.black));
JPanel buttonPanel = new JPanel(new GridLayout(1,5));
buttonPanel.setBorder(new EmptyBorder(100,20,100,20));
JPanel footerPanel = new JPanel(new GridLayout (2,1,0,0));
headerPanel.add(titleLabel);
inputPanel.add(idLabel);
inputPanel.add(idtxt);
inputPanel.add(nameLabel);
inputPanel.add(nametxt);
inputPanel.add(priceLabel);
inputPanel.add(pricetxt);
inputPanel.add(weightLabel);
inputPanel.add(weighttxt);
inputPanel.add(cableLabel);
inputPanel.add(cabletxt);
inputPanel.add(typeLabel);
inputPanel.add(typeBox);
buttonPanel.add(confirmBtn);
buttonPanel.add(cancelBtn);
buttonPanel.add(insertBtn);
buttonPanel.add(updateBtn);
buttonPanel.add(deleteBtn);
footerPanel.add(inputPanel);
footerPanel.add(buttonPanel);
/*
JPanel panel0=new JPanel();
JPanel panel1=new JPanel();
JPanel panel2=new JPanel();
JPanel panel3=new JPanel();
JPanel panel4=new JPanel();
JPanel panel5=new JPanel();
JPanel panel6 = new JPanel();
JPanel panel7 = new JPanel();
JPanel panel8 = new JPanel();
panel1.setLayout(new GridLayout(1, 6));
panel2.setLayout(new GridLayout(1, 2));
panel2.add(idLabel);
panel2.add(idtxt);
panel3.setLayout(new GridLayout(1, 2));
panel3.add(nameLabel);
panel3.add(nametxt);
panel4.setLayout(new GridLayout(1, 2));
panel4.add(priceLabel);
panel4.add(pricetxt);
panel5.setLayout(new GridLayout(1, 2));
panel5.add(weightLabel);
panel5.add(weighttxt);
panel6.setLayout(new GridLayout(1, 2));
panel6.add(cableLabel);
panel6.add(cabletxt);
panel7.setLayout(new GridLayout(1, 2));
panel7.add(typeLabel);
panel7.add(typeBox);
panel8.setLayout(new GridLayout(1, 5));
mainPanel.add(panel0);
mainPanel.add(panel1);
mainPanel.add(panel2);
mainPanel.add(panel3);
mainPanel.add(panel4);
mainPanel.add(panel5);
mainPanel.add(panel6);
mainPanel.add(panel7);
mainPanel.add(panel8);
*/
/*
header.add("ID");
header.add("Name");
header.add("Type");
header.add("Price");
header.add("Weight");
header.add("Cable Length");
*/
defaultTableModel=new DefaultTableModel(data, header);
hpTable =new JTable(defaultTableModel);
scrollPane=new JScrollPane(hpTable);
// tablePanel.add(scrollPane);
setLayout(new BorderLayout(0,5));
setTitle("Manage Form");
setSize(800,600);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
add(headerPanel,BorderLayout.NORTH);
add(scrollPane,BorderLayout.CENTER);
add(footerPanel,BorderLayout.SOUTH);
pack();
}
public static void main(String[] args) {
new manageForm();
}
}
How exactly to manage the panel layout to meet our requirement?
I have tried EmptyBorder, but the result, it's only making a big space between the other panel.
Use GridBagLayout it is a powerful and best fit to your requirement. It is arranges the components in a horizontal and vertical manner.
You can put component in a grid using cells and rows. As a example:
read more - GridBagLayout
Strongly disagree with the suggestion to use GridBagLayout. That layout is basically a punchline for any Swing programmer.
If you're going to be programming Swing, do yourself a huge favor and use MiGLayout. It's the layout manager that Swing should have built-in.
I am trying to set the buttons to the center using the Box.createHorizontalStrut() method. However if I use this.getWidth()/2 is does not work. How can I do to center it in the frame.
Code
package ch17;
import java.awt.Color;
import java.awt.Container;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class Q17_1 extends JFrame{
JButton left = new JButton("<=");
JButton right = new JButton("=>");
JPanel p1 = new JPanel();
JRadioButton rb1 = new JRadioButton("Red");
JRadioButton rb2 = new JRadioButton("Yellow");
JRadioButton rb3 = new JRadioButton("White");
JRadioButton rb4 = new JRadioButton("Gray");
JRadioButton rb5 = new JRadioButton("Green");
JPanel p2 = new JPanel();
Message m = new Message("Welcome to Java");
public Q17_1(){
setLayout(new GridLayout(3,1));
p1.setBorder(new TitledBorder("Select Message Panel Background"));
ButtonGroup group = new ButtonGroup();
group.add(rb1);group.add(rb2);group.add(rb3);group.add(rb4);group.add(rb5);
rb1.setMnemonic('R');rb2.setMnemonic('Y');rb3.setMnemonic('W');rb4.setMnemonic('G');
rb5.setMnemonic('N');
p1.setLayout(new GridLayout(1,5,5,5));
p1.add(rb1);p1.add(rb2);p1.add(rb3);p1.add(rb4);p1.add(rb5);
p2.setLayout(new BoxLayout(p2,BoxLayout.X_AXIS));
add(p1);
add(m);
p2.add(Box.createHorizontalStrut(250));
p2.add(left);
p2.add(Box.createHorizontalStrut(5));
p2.add(right);
add(p2);
left.addActionListener((ActionEvent) -> {
m.moveLeft();
repaint();
});
right.addActionListener((ActionEvent)-> {
m.moveRight();
repaint();
});
rb1.addActionListener(m);
rb2.addActionListener(m);
rb3.addActionListener(m);
rb4.addActionListener(m);
rb5.addActionListener(m);
}
public static void main(String[] args) {
Q17_1 frame = new Q17_1();
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
I have tried, this.getWidth()/2, p2.getWidth()/2, etc. However they don't work and the buttons are still starting from the beginning of the left side.
You could use a combination of Borderlayout, FlowLayout or GridBagLayout
For summary:
setLayout(new BorderLayout());
//...
p2.setLayout(new FlowLayout());
add(p1, BorderLayout.NORTH);
add(m);
//...
add(p2, BorderLayout.SOUTH);
The reason I might consider using BorderLayout of GridLayout for the core layout is it will give all the remaining space to the component in the CENTER position. This might not be what you want, but it's why I've used it.
Both GridBagLayout and FlowLayout will layout it's containers around the centre of the container, GridBagLayout doing it vertically and horizontally, FlowLayout doing it only horizontally (by default)
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.TitledBorder;
public class Q17_1 extends JFrame {
JButton left = new JButton("<=");
JButton right = new JButton("=>");
JPanel p1 = new JPanel();
JRadioButton rb1 = new JRadioButton("Red");
JRadioButton rb2 = new JRadioButton("Yellow");
JRadioButton rb3 = new JRadioButton("White");
JRadioButton rb4 = new JRadioButton("Gray");
JRadioButton rb5 = new JRadioButton("Green");
JPanel p2 = new JPanel();
JLabel m = new JLabel("Welcome to Java");
// Message m = new Message("Welcome to Java");
public Q17_1() {
setLayout(new BorderLayout());
p1.setBorder(new TitledBorder("Select Message Panel Background"));
ButtonGroup group = new ButtonGroup();
group.add(rb1);
group.add(rb2);
group.add(rb3);
group.add(rb4);
group.add(rb5);
rb1.setMnemonic('R');
rb2.setMnemonic('Y');
rb3.setMnemonic('W');
rb4.setMnemonic('G');
rb5.setMnemonic('N');
p1.setLayout(new GridLayout(1, 5, 5, 5));
p1.add(rb1);
p1.add(rb2);
p1.add(rb3);
p1.add(rb4);
p1.add(rb5);
p2.setLayout(new FlowLayout());
add(p1, BorderLayout.NORTH);
add(m);
p2.add(left);
p2.add(right);
add(p2, BorderLayout.SOUTH);
left.addActionListener((ActionEvent) -> {
// m.moveLeft();
// repaint();
});
right.addActionListener((ActionEvent) -> {
// m.moveRight();
// repaint();
});
// rb1.addActionListener(m);
// rb2.addActionListener(m);
// rb3.addActionListener(m);
// rb4.addActionListener(m);
// rb5.addActionListener(m);
}
public static void main(String[] args) {
Q17_1 frame = new Q17_1();
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
But If I want to use BoxLayout for practice for p2. What should I put for the arguments in order to center the buttons???
Because the container's size dynamic, you could use some horizontal glue instead
p2.add(Box.createHorizontalGlue());
p2.add(left);
p2.add(right);
p2.add(Box.createHorizontalGlue());
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Library {
JFrame frame = new JFrame("Library Management - MENU");
JButton button1 = new JButton();
JButton button2 = new JButton();
JButton button3 = new JButton();
JButton button4 = new JButton();
JButton button5 = new JButton();
JButton button6 = new JButton();
JButton button7 = new JButton();
/**
*/
public Library()
{
JPanel panel = new JPanel();
panel.setLayout(new FlowLayout());
JLabel label = new JLabel("MENU");
panel.add(label);
button1.setText("ISSUE a BOOK");
button1.setBounds(100,100,200,30);
panel.add(button1);
button2.setText("RETURN a BOOK");
button2.setBounds(200,200,200,30);
panel.add(button2);
button3.setText("UPDATE/SEARCH RECORD");
button3.setBounds(300,300,200,30);
panel.add(button3);
frame.add(panel);
button1.addActionListener((ActionEvent e) -> {
frame.setTitle("ISSUE");
JPanel panel1 = new JPanel();
panel1.setLayout(new FlowLayout());
button6.setText("ISSUE a BOOK on CARD1");
button6.setBounds(100,100,200,30);
panel1.add(button6);
button7.setText("ISSUE a BOOK on CARD2");
button7.setBounds(100,100,200,30);
panel1.add(button7);
frame.add(panel1);
frame.setVisible(true);
});
button2.addActionListener((ActionEvent e) -> {
frame.setTitle("RETRUN");
JPanel panel1 = new JPanel();
panel1.setLayout(new FlowLayout());
button4.setText("RETURN a BOOK on CARD1");
button4.setBounds(100,100,200,30);
panel1.add(button4);
button5.setText("RETURN a BOOK on CARD2");
button5.setBounds(100,100,200,30);
panel1.add(button5);
frame.add(panel1);
frame.setVisible(true);
});
frame.setSize(500,500);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public static void main(String[] args) {
Library obj=new Library();
}
}
I am creating a library management app and i have created multiple jpanels in a frame but when i move from
panel to another it fluctuates and a previously used buttons overlap
current buttons. And even buttons are not moving at proper postions even after changing the setBounds parameters.
Try using CardLayout, here is your code with the card layout being used... Note: You're missing some actions on your buttons to return to the MAIN screen, I'll leave that to you! :-)
import java.awt.CardLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Library {
JFrame frame = new JFrame("Library Management - MENU");
JButton button1 = new JButton();
JButton button2 = new JButton();
JButton button3 = new JButton();
JButton button4 = new JButton();
JButton button5 = new JButton();
JButton button6 = new JButton();
JButton button7 = new JButton();
public Library() {
JPanel cards = new JPanel(new CardLayout());
JPanel firstPanel = new JPanel();
JPanel secondPanel = new JPanel();
JPanel thirdPanel = new JPanel();
//Init some components...
JLabel label = new JLabel("MENU");
button1.setText("ISSUE a BOOK");
button2.setText("RETURN a BOOK");
button3.setText("UPDATE/SEARCH RECORD");
button4.setText("RETURN a BOOK on CARD1");
button5.setText("RETURN a BOOK on CARD2");
button6.setText("ISSUE a BOOK on CARD1");
button7.setText("ISSUE a BOOK on CARD2");
//First panel setup
firstPanel.setLayout(new FlowLayout());
firstPanel.add(label);
firstPanel.add(button1);
firstPanel.add(button2);
firstPanel.add(button3);
//Second panel setup
secondPanel.setLayout(new FlowLayout());
secondPanel.add(button6);
secondPanel.add(button7);
//Third panel setup
thirdPanel.setLayout(new FlowLayout());
thirdPanel.add(button4);
thirdPanel.add(button5);
//Show ISSUE on click of button1
button1.addActionListener((ActionEvent e) -> {
//Change cards to ISSUE panel
frame.setTitle("ISSUE");
CardLayout cl = (CardLayout) (cards.getLayout());
cl.show(cards, "ISSUE");
});
//Show RETURN on click of button2
button2.addActionListener((ActionEvent e) -> {
frame.setTitle("RETRUN");
CardLayout cl = (CardLayout) (cards.getLayout());
cl.show(cards, "RETRUN");
});
//Add content to cardlayout JPanel
cards.add(firstPanel, "MENU");
cards.add(secondPanel, "ISSUE");
cards.add(thirdPanel, "RETURN");
frame.add(cards);
//Initial card to show...
CardLayout cl = (CardLayout) (cards.getLayout());
cl.show(cards, "MENU");
//Frame constraints
frame.setSize(500, 500);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public static void main(String[] args) {
Library obj = new Library();
}
}
I have created a JPanel that has all the JRadioButtons on it that I need (it is called PortSettings). I also have a button, called port settings, when the user clicks the button, I need the JPanel to come up and display the radio buttons. I have tried to add the JPanel to the actionlistener but it doesn't work. My code is below. I have deleted all other ActionListener's from the other buttons except for the portsettings buttons. If this question is confusing I'm sorry. It's really hard to explain what I need to do. I have uploaded a drawing of what the panel will look like as well as a screenshot of my program.
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
public class TestApplication implements ActionListener {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(1000, 1000);
frame.setTitle("RBA Test Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
JTextArea text = new JTextArea();
JLabel logLabel = new JLabel("Input/Output Log");
JRadioButton apprve = new JRadioButton("Approve");
JRadioButton decline = new JRadioButton("Decline");
JRadioButton ethernet = new JRadioButton("Ethernet");
JRadioButton rs = new JRadioButton("RS232");
JRadioButton usbcdc = new JRadioButton("USB_CDC");
JRadioButton usbhid = new JRadioButton("USB_HID");
JButton next = new JButton("Next");
JButton ok = new JButton("OK");
JButton cancel = new JButton("Cancel");
JPanel PortSettings = new JPanel();
PortSettings.add(ethernet);
PortSettings.add(rs);
PortSettings.add(usbcdc);
PortSettings.add(usbhid);
PortSettings.add(next);
PortSettings.add(cancel);
JButton initialize = new JButton("Initialize");
JButton connect = new JButton("Connect");
JButton disconnect = new JButton("Disconnect");
JButton shutdown = new JButton("Shut Down");
JButton portsettings = new JButton("Port Settings");
portsettings.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
JButton online = new JButton("Go Online");
JButton offline = new JButton("Go Offline");
JButton status = new JButton("Status");
JButton reboot = new JButton("Reboot");
JButton account = new JButton("Account");
JButton amount = new JButton("Amount");
JButton reset = new JButton("Reset");
JButton approvordecl = new JButton("Approve / Decline");
JButton test = new JButton("Test Button #1");
JButton testing = new JButton("Test Button #2");
JRadioButton button = new JRadioButton("Radio Button");
JRadioButton button2 = new JRadioButton("Radio Button");
JCheckBox checkbox = new JCheckBox("Check Box");
JCheckBox checkbox2 = new JCheckBox("Check Box");
JPanel testPanel = new JPanel();
testPanel.add(button);
testPanel.add(button2);
testPanel.add(checkbox2);
JPanel posPanel = new JPanel();
posPanel.add(test);
posPanel.add(testing);
posPanel.add(checkbox);
JPanel llpPanel = new JPanel();
llpPanel.add(online);
llpPanel.add(offline);
llpPanel.add(status);
llpPanel.add(reboot);
llpPanel.add(account);
llpPanel.add(amount);
llpPanel.add(reset);
llpPanel.add(approvordecl);
JPanel textPanel = new JPanel(new BorderLayout());
textPanel.add(logLabel);
frame.add(logLabel);
JPanel buttonPanel = new JPanel();
buttonPanel.add(initialize);
buttonPanel.add(connect);
buttonPanel.add(disconnect);
buttonPanel.add(shutdown);
buttonPanel.add(portsettings);
frame.add(buttonPanel);
frame.add(buttonPanel, BorderLayout.NORTH);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("LLP", null, llpPanel, "Low Level Protocol");
tabbedPane.addTab("POS",null, posPanel, "Point Of Sale");
tabbedPane.addTab("Test", null, testPanel, "Test");
JPanel tabsPanel = new JPanel(new BorderLayout());
tabsPanel.add(tabbedPane);
frame.add(tabsPanel, BorderLayout.CENTER);
frame.pack();
}
#Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
I have tried to add a JFrame to the ActionListener then add the JPanel to the JFrame but nothing happens when I click the Port Settings button. Also, when I tried to add the JPanel to the JFrame it told me to put final in front of JPanel PortSettings = new JPanel();. Here is the code.
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
public class TestApplication implements ActionListener {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(1000, 1000);
frame.setTitle("RBA Test Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
JTextArea text = new JTextArea();
JLabel logLabel = new JLabel("Input/Output Log");
JRadioButton apprve = new JRadioButton("Approve");
JRadioButton decline = new JRadioButton("Decline");
JRadioButton ethernet = new JRadioButton("Ethernet");
JRadioButton rs = new JRadioButton("RS232");
JRadioButton usbcdc = new JRadioButton("USB_CDC");
JRadioButton usbhid = new JRadioButton("USB_HID");
JButton next = new JButton("Next");
JButton ok = new JButton("OK");
JButton cancel = new JButton("Cancel");
final JPanel PortSettings = new JPanel();
PortSettings.add(ethernet);
PortSettings.add(rs);
PortSettings.add(usbcdc);
PortSettings.add(usbhid);
PortSettings.add(next);
PortSettings.add(cancel);
JPanel accountButton = new JPanel();
accountButton.add(ok);
accountButton.add(cancel);
JPanel apprvordecl = new JPanel();
apprvordecl.add(apprve);
apprvordecl.add(decline);
JPanel amountButton = new JPanel();
amountButton.add(ok);
amountButton.add(cancel);
JButton initialize = new JButton("Initialize");
JButton connect = new JButton("Connect");
JButton disconnect = new JButton("Disconnect");
JButton shutdown = new JButton("Shut Down");
JButton portsettings = new JButton("Port Settings");
portsettings.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFrame port = new JFrame("Port Settings");
port.add(PortSettings);
frame.setVisible(true);
}
});
JButton online = new JButton("Go Online");
JButton offline = new JButton("Go Offline");
JButton status = new JButton("Status");
JButton reboot = new JButton("Reboot");
JButton account = new JButton("Account");
JButton amount = new JButton("Amount");
JButton reset = new JButton("Reset");
JButton approvordecl = new JButton("Approve / Decline");
JButton test = new JButton("Test Button #1");
JButton testing = new JButton("Test Button #2");
JRadioButton button = new JRadioButton("Radio Button");
JRadioButton button2 = new JRadioButton("Radio Button");
JCheckBox checkbox = new JCheckBox("Check Box");
JCheckBox checkbox2 = new JCheckBox("Check Box");
JPanel testPanel = new JPanel();
testPanel.add(button);
testPanel.add(button2);
testPanel.add(checkbox2);
JPanel posPanel = new JPanel();
posPanel.add(test);
posPanel.add(testing);
posPanel.add(checkbox);
JPanel llpPanel = new JPanel();
llpPanel.add(online);
llpPanel.add(offline);
llpPanel.add(status);
llpPanel.add(reboot);
llpPanel.add(account);
llpPanel.add(amount);
llpPanel.add(reset);
llpPanel.add(approvordecl);
JPanel textPanel = new JPanel(new BorderLayout());
textPanel.add(logLabel);
frame.add(logLabel);
JPanel buttonPanel = new JPanel();
buttonPanel.add(initialize);
buttonPanel.add(connect);
buttonPanel.add(disconnect);
buttonPanel.add(shutdown);
buttonPanel.add(portsettings);
frame.add(buttonPanel);
frame.add(buttonPanel, BorderLayout.NORTH);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("LLP", null, llpPanel, "Low Level Protocol");
tabbedPane.addTab("POS",null, posPanel, "Point Of Sale");
tabbedPane.addTab("Test", null, testPanel, "Test");
JPanel tabsPanel = new JPanel(new BorderLayout());
tabsPanel.add(tabbedPane);
frame.add(tabsPanel, BorderLayout.CENTER);
frame.pack();
}
#Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
You´re on the right track, but you do not want to add your PortSettings panel to a new JFrame but somewhere on your previously built one, assigned to the local variable frame. So your action listener should rather be
portsettings.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
frame.add(PortSettings, BorderLayout.SOUTH);
frame.pack();
}
});
(This is assuming that you actually want to add it to the frame at that instant and not add it invisibly right from the start and turn it visible, like #Aleksei suggested.)
The error message about final is because you use PortSettings in an (anonymous) inner class - viz., the ActionListener. In my proposed modification the same goes for frame, so you need to adapt its declaration as well:
final JFrame frame = new JFrame();
The reason why is quite technical and beside the point right now: just do it.
If instead you want the panel to appear in a separate window, you need a JDialog for that, not a second JFrame:
portsettings.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JDialog dialog = new JDialog(frame);
dialog.add(PortSettings);
dialog.pack();
dialog.setVisible(true);
}
});
Take a look at the JOptionPane class for a rich choice of ways to get more functionality out of dialogs.
Just add the action listener to all your buttons.
like this:
yourButton.addActionListener(this);
Do that for all the buttons.
Then take your TestPalication class's actionPreformed method and do whatever:
#Override
public void actionPerformed(ActionEvent arg0) {
((JRadioButton) arg0.getSource()).setTitle("Clicked!");
}
Your question was a little bit confusing but I hope this clarifies a little bit.
I am trying to vertically align (center) both JLabels inside one JPanel.
JPanel panel = new JPanel();
panel.setPreferredSize(size);
JLabel label1 = new JLabel(icon);
JLabel label2 = new JLabel("text");
panel.add(label1);
panel.add(label2);
I have tried using setAligmentY() with no success. Both labels always appear on the top of JPanel.
UPD: Labels should be located next to each other like using FlowLayout, but in the middle of the JPanel.
Use a GridBagLayout with the default constraints. Here is a small demo code:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class TestVerticalAlignement {
protected void initUI() {
final JFrame frame = new JFrame();
frame.setTitle("Test vertical alignement");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
panel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
JLabel label1 = new JLabel("label1");
JLabel label2 = new JLabel("label2");
panel.add(label1, gbc);
panel.add(label2, gbc);
frame.add(panel);
frame.setSize(300, 300);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new TestVerticalAlignement().initUI();
}
});
}
}
you can see this answer:
https://stackoverflow.com/a/18073909/189411
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
Use gridlayout, simple.
That should work.
Consider my following example:
import java.awt.*;
import java.applet.Applet;
import javax.swing.*;
/*
<applet code=AJ07 width=450 height=450>
</applet>
*/
public class AJ07 extends JApplet{
Container c=null;
public void init(){
JPanel pTop=new JPanel();
JPanel pLeft=new JPanel();
JPanel pCenter=new JPanel();
JPanel pProperties=new JPanel();
pLeft.setLayout(new GridLayout(20,1));
c=this.getContentPane();
JButton bNew=new JButton("New");
pTop.add(bNew);
JButton bOpen=new JButton("Open");
pTop.add(bOpen);
JButton bSave=new JButton("Save");
pTop.add(bSave);
JButton bSaveAll=new JButton("Save All");
pTop.add(bSaveAll);
JButton bRun=new JButton("Run");
pTop.add(bRun);
JButton bStop=new JButton("Stop");
pTop.add(bStop);
JButton bPause=new JButton("Pause");
pTop.add(bPause);
JButton bText=new JButton("TextBox");
pLeft.add(bText);
JButton bButton=new JButton("Button");
pLeft.add(bButton);
pProperties.setLayout(new GridLayout(20,1));
pProperties.add(new Label("BackColor"));
pProperties.add(new Label("ForeColor"));
c.add(new TextArea(),BorderLayout.CENTER);
c.add(pTop,BorderLayout.NORTH);
c.add(pLeft,BorderLayout.WEST);
c.add(new Label("Project Loaded Successfully!"),BorderLayout.SOUTH);
c.add(pProperties,BorderLayout.EAST);
//c.add(pCenter,BorderLayout.CENTER);
}
}
for which the output is as follows: