I've seen other posts on this subject, but the solutions they found do not apply to me. I am setting a weighted value and using the c.fill = GridBagConstraints.BOTH constraints as well.
I'm including the whole GUI code I have, just in case my mistake is coming form something other than the GridBagLayout.
I want the scrollable text block on the right to expand the remaining space within the GUI and I have set all the variables that should be attributed to that and yet it still isn't working. What am I doing wrong?
My result:
import java.awt.*;
import javax.swing.*;
public class TestCode extends JFrame {
JTextArea textArea = new JTextArea ();
JComboBox <String> typeComboBox;
JTextField searchField;
JTextField fileField;
public TestCode(){
setTitle ("GUI Test");
setSize (600, 300);
setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
setVisible (true);
JScrollPane scrollPane = new JScrollPane(textArea);
JButton readButton = new JButton("Read File");
JButton displayButton = new JButton("Display");
JButton searchButton = new JButton("Search");
searchField = new JTextField(10);
fileField = new JTextField(15);
typeComboBox = new JComboBox <String> ();
typeComboBox.addItem("Index");
typeComboBox.addItem("Type");
typeComboBox.addItem("Name");
JPanel container = new JPanel();
container.setLayout(new GridBagLayout());
container.setPreferredSize(new Dimension(250, 100));
JPanel filePanel = new JPanel();
filePanel.setLayout(new BoxLayout(filePanel, BoxLayout.Y_AXIS));
filePanel.add(new JLabel("Source file", SwingConstants.LEFT));
JPanel filePanelTop = new JPanel();
filePanelTop.setLayout(new FlowLayout(FlowLayout.LEFT));
filePanelTop.add(fileField);
JPanel filePanelBottom = new JPanel();
filePanelBottom.setLayout(new FlowLayout(FlowLayout.RIGHT));
filePanelBottom.add(readButton);
filePanelBottom.add(displayButton);
filePanel.add(filePanelTop);
filePanel.add(filePanelBottom);
filePanel.setMaximumSize(filePanel.getPreferredSize());
filePanel.setBorder(BorderFactory.createTitledBorder("Import File"));
JPanel searchPanel = new JPanel();
searchPanel.setLayout(new BoxLayout(searchPanel, BoxLayout.Y_AXIS));
searchPanel.add(new JLabel("Search target", SwingConstants.LEFT));
JPanel searchPanelTop = new JPanel();
searchPanelTop.setLayout(new FlowLayout(FlowLayout.LEFT));
searchPanelTop.add(searchField);
searchPanelTop.add(typeComboBox);
searchPanel.add(searchPanelTop);
searchPanel.add(searchButton);
searchPanel.setMaximumSize(searchPanel.getPreferredSize());
searchPanel.setBorder(BorderFactory.createTitledBorder("Search Objects"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
container.add(filePanel, c);
c.gridx = 0;
c.gridy = 1;
container.add(searchPanel, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 1.0;
c.weighty = 1.0;
c.gridwidth = GridBagConstraints.REMAINDER;
c.gridheight = GridBagConstraints.REMAINDER;
c.fill = GridBagConstraints.BOTH;
c.anchor = GridBagConstraints.NORTHWEST;
container.add(scrollPane, c);
add(container, BorderLayout.WEST);
validate();
} // end method toString
public static void main(String[] args){
TestCode run = new TestCode();
}
} // end class Treasure
//add(container, BorderLayout.WEST);
add(container);
The West contrains the components to their preferred width. The default is the CENTER which allows components to expand to fill the space available.
Also, the main structure of you code is wrong. You should be adding all the component to the frame first and then invoke:
frame.pack();
frame.setVisible(true);
Then there is no need for the validate().
Related
I'm trying to get the config panel to take up the top of the screen, and then have the input and output panels side-by-side. I'm also trying to get the text areas to be 70 characters wide each and 30 rows tall. However, right now, the config panel isn't showing up at all, and the text areas are only 35 characters wide and 2 rows tall. I've followed all the examples and tutorials I've found. What am I doing wrong?
public class BorderWrapper {
public static void main(String[] args) {
//Create frame
JFrame frame = new JFrame("Border Wrapper");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create main panel
MainPanel panel = new MainPanel();
frame.getContentPane().add(panel, BorderLayout.NORTH);
//Display frame
Dimension minSize = new Dimension(650, 375);
frame.setPreferredSize(minSize);
frame.setMinimumSize(minSize);
frame.pack();
frame.setVisible(true);
}
}
public class MainPanel extends JPanel {
private static final Font INPUT_FONT = new Font("Monospaced", Font.PLAIN, 12);
private JTextArea inputArea, outputArea;
private JTextField titleField, topBorderField, sideBorderField;
public MainPanel() {
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
//Set up config panel
JPanel configPanel = new JPanel();
configPanel.setLayout(new BoxLayout(configPanel, BoxLayout.X_AXIS));
configPanel.setMaximumSize(new Dimension(400, 200));
titleField = new JTextField(25);
titleField.setFont(INPUT_FONT);
topBorderField = new JTextField(1);
topBorderField.setFont(INPUT_FONT);
sideBorderField = new JTextField(4);
sideBorderField.setFont(INPUT_FONT);
configPanel.add(new JLabel("Title:"));
configPanel.add(titleField);
configPanel.add(new JLabel("Top border:"));
configPanel.add(topBorderField);
configPanel.add(new JLabel("Side border:"));
configPanel.add(sideBorderField);
c.gridwidth = 2;
c.gridx = 0;
c.gridy = 0;
add(configPanel, c);
//Set up Input panel
JPanel inputPanel = new JPanel();
inputPanel.setLayout(new BoxLayout(inputPanel, BoxLayout.Y_AXIS));
inputArea = new JTextArea("Type or paste your stuff here . . .");
inputArea.setFont(INPUT_FONT);
inputArea.setLineWrap(true);
inputArea.setWrapStyleWord(true);
inputArea.setColumns(75);
JScrollPane inputPane = new JScrollPane(inputArea);
inputPane.setMinimumSize(new Dimension(250, 400));
JLabel inputLabel = new JLabel("Text Box");
inputLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
inputPanel.add(inputLabel);
inputPanel.add(inputPane);
inputPanel.setMinimumSize(new Dimension(250, 400));
c.gridwidth = 1;
c.gridx = 0;
c.gridy = 1;
add(inputPanel, c);
//Set up Output panel
JPanel outputPanel = new JPanel();
outputPanel.setLayout(new BoxLayout(outputPanel, BoxLayout.Y_AXIS));
outputArea = new JTextArea();
outputArea.setFont(INPUT_FONT);
outputArea.setLineWrap(true);
outputArea.setWrapStyleWord(true);
outputArea.setColumns(75);
JScrollPane outputPane = new JScrollPane(outputArea);
outputPane.setMinimumSize(new Dimension(250, 400));
JLabel outputLabel = new JLabel("Wrapped Output");
outputLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
outputPanel.add(outputLabel);
outputPanel.add(outputPane);
outputPanel.setMinimumSize(new Dimension(250, 400));
c.gridwidth = 1;
c.gridx = 1;
c.gridy = 1;
add(outputPanel, c);
}
}
Originally, I was going to try to use a BorderLayout, since it seemed that made the most sense for the layout I was trying to make, but that did an even worse job when I set them to BorderLayout.WEST and BorderLayout.EAST.
Have modified your program to use BorderLayout in the MainPanel and few other minor changes to get the desired look and feel.Check if this helps.
public class BorderWrapper {
public static void main(String[] args) {
// Create frame
JFrame frame = new JFrame("Border Wrapper");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create main panel
MainPanel panel = new MainPanel();
frame.getContentPane().add(panel);
// Display frame
Dimension minSize = new Dimension(650, 375);
frame.setPreferredSize(minSize);
frame.setMinimumSize(minSize);
frame.pack();
frame.setVisible(true);
}
}
class MainPanel extends JPanel {
private static final Font INPUT_FONT = new Font("Monospaced", Font.PLAIN, 12);
private JTextArea inputArea, outputArea;
private JTextField titleField, topBorderField, sideBorderField;
public MainPanel() {
setLayout(new BorderLayout());
// Set up config panel
JPanel configPanel = new JPanel();
configPanel.setLayout(new BoxLayout(configPanel, BoxLayout.X_AXIS));
configPanel.setMaximumSize(new Dimension(400, 200));
titleField = new JTextField(25);
titleField.setFont(INPUT_FONT);
topBorderField = new JTextField(1);
topBorderField.setFont(INPUT_FONT);
sideBorderField = new JTextField(4);
sideBorderField.setFont(INPUT_FONT);
configPanel.add(new JLabel("Title:"));
configPanel.add(titleField);
configPanel.add(new JLabel("Top border:"));
configPanel.add(topBorderField);
configPanel.add(new JLabel("Side border:"));
configPanel.add(sideBorderField);
add(configPanel, BorderLayout.NORTH);
// Set up Input panel
JPanel lowerPanel = new JPanel(new GridLayout(1, 1));
JPanel inputPanel = new JPanel();
inputPanel.setLayout(new BoxLayout(inputPanel, BoxLayout.Y_AXIS));
inputArea = new JTextArea("Type or paste your stuff here . . .");
inputArea.setFont(INPUT_FONT);
inputArea.setLineWrap(true);
inputArea.setWrapStyleWord(true);
inputArea.setColumns(75);
JScrollPane inputPane = new JScrollPane(inputArea);
JLabel inputLabel = new JLabel("Text Box");
inputLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
inputPanel.add(inputLabel);
inputPanel.add(inputPane);
lowerPanel.add(inputPanel);
// Set up Output panel
JPanel outputPanel = new JPanel();
outputPanel.setLayout(new BoxLayout(outputPanel, BoxLayout.Y_AXIS));
outputArea = new JTextArea();
outputArea.setFont(INPUT_FONT);
outputArea.setLineWrap(true);
outputArea.setWrapStyleWord(true);
outputArea.setColumns(75);
JScrollPane outputPane = new JScrollPane(outputArea);
JLabel outputLabel = new JLabel("Wrapped Output");
outputLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
outputPanel.add(outputLabel);
outputPanel.add(outputPane);
lowerPanel.add(outputPanel);
add(lowerPanel, BorderLayout.CENTER);
}
}
I felt it convenient to use BorderLayout for this format.Anyways, you can still make few changes to the code you posted using GridBagConstraints to get the desired look.Make the below changes one by one and you will observe the differences.
1.You were aligning the MainPanel to the NORTH by using BorderLayout.But in your case the entire set of components is placed in MainPanel,so better place it in center.So instead of NORTH use below :(after this change,you will see the complete input and output panels)
MainPanel panel = new MainPanel();
frame.getContentPane().add(panel, BorderLayout.CENTER);
2.You have set the dimension of the Parent frame to Dimension(height=375)
minSize = new Dimension(650, 375);
You components(configPanel=200,outputPanel=400) combined height is more than 375.Increase the height of the Parent, to about 600.
3.Instead of BoxLayout try using GridLayout for configPanel.
configPanel.setLayout(new GridLayout(1,6,5,0));
Making the above 3 changes to your existing code will get the expected output.Hope this clarifies.
I am trying to build a sample application using GridLayout in Java. But I am unable to re-size my buttons. Please help me in doing it.
There are four grid layouts in the code.
I have used the setSize(width, height) function and also the setPreferredSize function. But I am not able to set the size of the buttons.
Here is the code
import java.awt.*;
import javax.swing.*;
public class Details2 {
static JButton btn1,btn2;
public static void main(String[] a) {
JFrame myFrame = new JFrame("Medical History Form");
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.setSize(700,700);
Container myPane = myFrame.getContentPane();
myPane.setLayout(new GridLayout(2,1));
myPane.add(getFieldPanel());
myPane.add(getButtonPanel());
myPane.setPreferredSize(new Dimension(100,100));
myFrame.setVisible(true);
}
private static JPanel getFieldPanel() {
JPanel p = new JPanel(new GridLayout(4,2));
p.setBorder(BorderFactory.createTitledBorder("Details"));
p.add(new JLabel("Please check in the here"));
p.add(new JCheckBox("Nothing till now",false));
p.add(getPanel());
return p;
}
private static JPanel getButtonPanel() {
GridLayout g =new GridLayout(1,2);
JPanel p = new JPanel(g);
btn1 = new JButton("Submit");
btn2 = new JButton("Reset");
p.add(btn1).setPreferredSize(new Dimension(100,100));
p.add(btn2).setPreferredSize(new Dimension(100,100));
p.setPreferredSize(new Dimension(100,100));
return p;
}
private static JPanel getPanel() {
JPanel p = new JPanel(new GridLayout(5,2));
p.add(new JCheckBox("A",false));
p.add(new JCheckBox("B",false));
p.add(new JCheckBox("C",false));
p.add(new JCheckBox("D",false));
p.add(new JCheckBox("E",false));
p.add(new JCheckBox("F",false));
p.add(new JCheckBox("G",false));
p.add(new JCheckBox("E",false));
p.add(new JCheckBox("H",false));
p.add(new JCheckBox("I",false));
return p;
}
}
I believe setting GridLayout(2,2) will override size changes made to the panels. To be more precise, use GridBagConStraints; you can refer following code to understand it.
private JTextField field1 = new JTextField();
private JButton addBtn = new JButton("Save: ");
public void addComponents(Container pane) {
pane.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
// Components
c.gridwidth = 1;
c.weightx = .01;
c.weighty = .2;
c.gridx = 0;
c.gridy = 1;
pane.add(field1, c);
c.gridwidth = 1;
c.weightx = .01;
c.weighty = .2;
c.gridx = 0;
c.gridy = 1;
pane.add(addBtn, c);
}
public MainView() {
//Create and set up the window.
JFrame frame = new JFrame("NAME");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Set up the content pane.
addComponents(frame.getContentPane());
//Display the window.
frame.pack();
frame.setVisible(true);
frame.setResizable(false);
frame.setSize(400, 125);
frame.setLocation(400, 300);
}
if you want to control the size of your components then don't use a layout. do something like this:
private static JPanel getButtonPanel() {
JPanel p = new JPanel();
p.setLayout(null);
btn1 = new JButton("Submit");
btn2 = new JButton("Reset");
btn1.setBounds(x, y, width, height);
btn2.setBounds(x, y, width, height);
p.add(btn1);
p.add(btn2);
return p;
I am trying to make an application in java, to start with i have problems in the GUI.
I have put Jpanel inside Jframe ,but i am gettingf problems when i use setMaximumSize and moreover i want to fix the size of the Jpanel, so that even if user tries to change the size of the window , jpanel remains at center.
i have tried this a solution at StackOverflow
How can I properly center a JPanel ( FIXED SIZE ) inside a JFrame?
Please guide me through.This is my first post, i dont have enough reputations to post an image .Thanks
import javax.swing.*;
import java.awt.*;
class App_Demo4 extends JFrame {
public App_Demo4()
{
JFrame frm=new JFrame("Application");
JPanel pane=new JPanel();
frm.setVisible(true);
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setLayout(new BorderLayout());
frm.add(pane,BorderLayout.CENTER);
pane.setSize(400,400);
Dimension dim=new Dimension(400,400);
pane.setMinimumSize(dim);
Box box = new Box(BoxLayout.Y_AXIS);
box.add(Box.createVerticalGlue());
box.add(pane);
box.add(Box.createVerticalGlue());
frm.add(box);
frm.setSize(500,500);
JButton dbtn1=new JButton("Download File");
pane.add(dbtn1);
JTextField txt1=new JTextField(20);
pane.add(txt1);
JButton bbtn1=new JButton("Browse");
pane.add(bbtn1);
JButton dbtn2=new JButton("Download Mail");
pane.add(dbtn2);
JTextField txt2=new JTextField(20);
pane.add(txt2);
JButton bbtn2=new JButton("Browse");
pane.add(bbtn2);
JButton cbtn1=new JButton("Compile File");
pane.add(cbtn1);
JTextField txt3=new JTextField(20);
pane.add(txt3);
JButton bbtn3=new JButton("Browse");
pane.add(bbtn3);
JButton cbtn2=new JButton("Cancel");
pane.add(cbtn2,BorderLayout.EAST);
}
public static void main(String[] args)
{
new App_Demo4();
}
}
Don't try to set the size of a panel. That is the job of the layout manager.
You need to change the layout manager of your panel. By default a JPanel uses a FlowLayout. In this case the components just flow to a new line depending on the width of the frame.
You might want to look at a GridBagLayout. See the section from the Swing tutorial on How to Use a GridBagLayout for more information and examples.
Also, make sure you add all the components to the frame BEFORE packing the frame and making the frame visible. So you basic code should be:
frame.add(....)l
frame.pack();
frame.setVisible(true);
Thats how you do it :
Hope it helps...
import javax.swing.*;
import java.awt.*;
public class App_Demo4 extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
public App_Demo4()
{
super("Application");
JPanel pane=new JPanel();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setPreferredSize(new Dimension(500,500));
GridBagLayout gl = new GridBagLayout();
pane.setLayout(gl);
GridBagConstraints c = new GridBagConstraints();
c.weightx = 1;
c.weighty = 1;
c.anchor = GridBagConstraints.CENTER;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(6, 6, 6, 6);
c.gridx = 0;
c.gridy = 0;
JButton dbtn1=new JButton("Download File");
pane.add(dbtn1, c);
JTextField txt1=new JTextField(20);
c.gridx = 1;
pane.add(txt1, c);
JButton bbtn1=new JButton("Browse");
c.gridx = 2;
pane.add(bbtn1, c);
JButton dbtn2=new JButton("Download Mail");
c.gridy = 1;
c.gridx = 0;
pane.add(dbtn2, c);
JTextField txt2=new JTextField(20);
c.gridx = 1;
pane.add(txt2, c);
JButton bbtn2=new JButton("Browse");
c.gridx = 2;
pane.add(bbtn2, c);
c.gridy = 2;
c.gridx = 0;
JButton cbtn1=new JButton("Compile File");
pane.add(cbtn1, c);
JTextField txt3=new JTextField(20);
c.gridx = 1;
pane.add(txt3, c);
JButton bbtn3=new JButton("Browse");
c.gridx = 2;
pane.add(bbtn3, c);
c.gridy = 3;
c.gridx = 2;
JButton cbtn2=new JButton("Cancel");
pane.add(cbtn2,c);
this.add(pane);
this.pack();
this.setVisible(true);
}
public static void main(String[] args)
{
javax.swing.SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new App_Demo4();
}
});
}
}
How to set the size of jbutton in gridlayout? otherwise the button size have lot of width and its not listening setSize or setBounds or setPreferedSize.
addBut = new JButton("Add");
addBut.addActionListener(this);
deleteBut = new JButton("Delete");
deleteBut.addActionListener(this);
selectionPanel = new JPanel();
selectionPanel.setLayout(new GridLayout(2,2));
TitledBorder selectionBorder = new TitledBorder("Options");
selectionBorder.setTitleColor(Color.BLUE);
selectionPanel.setBorder(selectionBorder);
selectionPanel.add(new JLabel("Department Name"));
selectionPanel.add(new JTextField(deptName));
selectionPanel.add(addBut);
selectionPanel.add(deleteBut);
selectionPanel.setPreferredSize(new Dimension(900,100));
I believe setting GridLayout(2,2) will override size changes made to the panels. To be more precise, use GridBagConStraints;
private JTextField field1 = new JTextField();
private JButton addBtn = new JButton("Save: ");
public void addComponents(Container pane) {
pane.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
// Components
c.gridwidth = 1;
c.weightx = .01;
c.weighty = .2;
c.gridx = 0;
c.gridy = 1;
pane.add(field1, c);
c.gridwidth = 1;
c.weightx = .01;
c.weighty = .2;
c.gridx = 0;
c.gridy = 1;
pane.add(addBtn, c);
}
public MainView() {
//Create and set up the window.
JFrame frame = new JFrame("NAME");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Set up the content pane.
addComponents(frame.getContentPane());
//Display the window.
frame.pack();
frame.setVisible(true);
frame.setResizable(false);
frame.setSize(400, 125);
frame.setLocation(400, 300);
}
I am stuck with java GridBagLayout. Here is only one issue left. I want the middle panel ("Testing Label 2") take all vertical spaces left.
How to achieve this ?
Thanks.
package com;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;
public class Test1 {
private void _panel1(JPanel panel){
panel.setBorder(new LineBorder(Color.RED));
panel.setLayout(new GridBagLayout());
JPanel panel1 = new JPanel();
panel1.add(new JLabel(" Testing Label 1 "));
panel1.setBorder(new TitledBorder("P1"));
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTH;
c.gridx = 0;
c.gridy = 0;
c.weightx = 1.0;
c.weighty = 0.0;
panel.add(panel1, c);
JPanel panel2 = new JPanel();
panel2.add(new JLabel(" Testing Label 2"));
panel2.setBorder(new TitledBorder("P2"));
c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTH;
c.gridx = 0;
c.gridy = 1;
c.weightx = 1.0;
c.weighty = 1.0;
panel.add(panel2, c);
JPanel panel3 = new JPanel();
panel3.setBorder(new TitledBorder("P3"));
c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTH;
c.gridx = 0;
c.gridy = 2;
c.weightx = 1.0;
c.weighty = 0.0;
panel3.setLayout(new GridLayout(5,1));
for(int i=0; i<5; i++){
panel3.add(new JButton("button "+i));
}
panel.add(panel3, c);
}
public Test1(){
JFrame frame = new JFrame();
frame.setTitle("test 1");
frame.getContentPane().setLayout(new GridLayout(1,3));
JPanel panel1 = new JPanel();
_panel1(panel1);
JPanel panel2 = new JPanel();
JPanel panel3 = new JPanel();
frame.getContentPane().add(panel1);
frame.getContentPane().add(panel2);
frame.getContentPane().add(panel3);
frame.setSize(800, 600);
frame.setVisible(true);
}
public static void main(String[] args) {
Test1 t = new Test1();
}
}
I just changed one line (27):
final JPanel panel2 = new JPanel();
panel2.add(new JLabel(" Testing Label 2"));
panel2.setBorder(new TitledBorder("P2"));
c = new GridBagConstraints();
// You have to use BOTH for the panel to take
// all vertical and horizontal space
c.fill = GridBagConstraints.BOTH;
You were setting the grid constraint for panel2 to HORIZONTAL.
Regards,
Consider changing the GridBagConstraint's fill field to BOTH for panel2:
panel2.setBorder(new TitledBorder("P2"));
c = new GridBagConstraints();
c.fill = GridBagConstraints.BOTH; // *****
c.anchor = GridBagConstraints.NORTH;
Either that or for a much simpler solution, just use a BorderLayout instead:
panel.setBorder(new LineBorder(Color.RED));
panel.setLayout(new BorderLayout());
JPanel panel1 = new JPanel();
panel1.add(new JLabel(" Testing Label 1 "));
panel1.setBorder(new TitledBorder("P1"));
panel.add(panel1, BorderLayout.NORTH);
JPanel panel2 = new JPanel();
panel2.add(new JLabel(" Testing Label 2"));
panel2.setBorder(new TitledBorder("P2"));
panel.add(panel2, BorderLayout.CENTER);
JPanel panel3 = new JPanel();
panel3.setBorder(new TitledBorder("P3"));
panel3.setLayout(new GridLayout(5, 1));
for (int i = 0; i < 5; i++) {
panel3.add(new JButton("button " + i));
}
panel.add(panel3, BorderLayout.SOUTH);