Although I'm using BorderLayout.CENTER, my group of buttons still appears to be aligning to the north of the panel. If I use BorderLayout.SOUTH their relative position is the same as BorderLayout.CENTER but to the south of the panel.
How can I get them to be in the middle of the panel?
Is there anything I'm doing that is glaringly wrong?
public void createExecuteArea() {
JButton connectButton = new JButton("Connect");
connectButton.setPreferredSize(new Dimension(100, 40));
JButton disconnectButton = new JButton("Disconnect");
disconnectButton.setPreferredSize(new Dimension(100, 40));
JButton abortButton = new JButton("Abort");
abortButton.setPreferredSize(new Dimension(100, 40));
executePanel = new JPanel();
executePanel.setLayout(new BorderLayout());
JPanel buttonPanel = new JPanel();
buttonPanel.add(connectButton);
buttonPanel.add(disconnectButton);
buttonPanel.add(abortButton);
executePanel.add(buttonPanel, BorderLayout.CENTER);
}
The following changes to my code resolved my issues.
public void createExecuteArea() {
JButton connectButton = new JButton("Connect");
connectButton.setPreferredSize(new Dimension(100, 40));
JButton disconnectButton = new JButton("Disconnect");
disconnectButton.setPreferredSize(new Dimension(100, 40));
JButton abortButton = new JButton("Abort");
abortButton.setPreferredSize(new Dimension(100, 40));
executePanel = new JPanel(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
JPanel buttonPanel = new JPanel();
buttonPanel.add(connectButton);
buttonPanel.add(disconnectButton);
buttonPanel.add(abortButton);
executePanel.add(buttonPanel, c);
}
The issue is with executePanel and what layout it is using. You don't give it an explicit layout, and so it uses a BorderLayout by default. If you want to center your buttons within this JPanel, then consider using a different layout, perhaps a GridBagLayout.
For more specific help, consider creating and posting a minimal example program.
Related
I am setting up a UI for a blackjack helper program and while I know its not the most beautiful way to do things, it makes sense.
The layering for what seems to be the upper layers is not working properly. Any suggestions?
The left should have four layers, as should the middle and the right side should have two layers between the keypad and the enter buttons. Image is attached below.
import java.util.*;
import java.lang.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
// main method, runs the program
class BlackjackHelper
{
public static void main(String\[\] args)
{
Frame21 game = new Frame21();
//pop window with rules of game
}
}
// JFrame Construction
class Frame21 extends JFrame
{
// create needed components of program
JLabel questionDisplay = new JLabel("What is your first card?");
JLabel actionDisplay = new JLabel("Enter your first card");
JLabel dealerCardText = new JLabel("Dealer's Card:");
JLabel dealerCardDisplay = new JLabel("N/A");
JLabel handOneText = new JLabel("Hand One:");
JLabel handOneDisplay = new JLabel("N/A");
JLabel handTwoText = new JLabel("Hand Two:");
JLabel handTwoDisplay = new JLabel("N/A");
JLabel statsText = new JLabel("Win %:");
JLabel statsDisplay = new JLabel("N/A");
JButton aceButton = new JButton("A");
JButton twoButton = new JButton("2");
JButton threeButton = new JButton("3");
JButton fourButton = new JButton("4");
JButton fiveButton = new JButton("5");
JButton sixButton = new JButton("6");
JButton sevenButton = new JButton("7");
JButton eightButton = new JButton("8");
JButton nineButton = new JButton("9");
JButton tenButton = new JButton("10");
JButton faceButton = new JButton("F");
JButton clearButton = new JButton("C");
JButton standButton = new JButton("Stand");
JButton hitButton = new JButton("Hit");
JButton doubleButton = new JButton("Double");
JButton splitButton = new JButton("Split");
JButton winButton = new JButton("Win");
JButton loseButton = new JButton("Lose");
JButton resetButton = new JButton("Reset All");
JButton enterButton = new JButton("Enter");
public Frame21()
{
// JFrame - the main area of the program
JFrame frame = new JFrame("Blackjack Helper");
// JPanel right - the rightside of the program
JPanel rightSide = new JPanel();
JPanel rightNorthSide = new JPanel();
rightNorthSide.setLayout(new GridLayout(3,4));
rightNorthSide.add(aceButton);
rightNorthSide.add(twoButton);
rightNorthSide.add(threeButton);
rightNorthSide.add(fourButton);
rightNorthSide.add(fiveButton);
rightNorthSide.add(sixButton);
rightNorthSide.add(sevenButton);
rightNorthSide.add(eightButton);
rightNorthSide.add(nineButton);
rightNorthSide.add(tenButton);
rightNorthSide.add(faceButton);
rightNorthSide.add(clearButton);
JPanel rightSouthSide = new JPanel();
rightSouthSide.add(resetButton, BorderLayout.WEST);
rightSouthSide.add(enterButton, BorderLayout.EAST);
rightSide.add(rightNorthSide, BorderLayout.NORTH);
rightSide.add(rightSouthSide, BorderLayout.SOUTH);
frame.add(rightSide, BorderLayout.EAST);
// JPanel Center - the center of the program
JPanel center = new JPanel();
JPanel centerNorth = new JPanel();
centerNorth.add(questionDisplay, BorderLayout.NORTH);
centerNorth.add(actionDisplay, BorderLayout.SOUTH);
JPanel centerSouth = new JPanel();
JPanel centerSouthNorth = new JPanel();
centerSouthNorth.add(dealerCardText, BorderLayout.WEST);
centerSouthNorth.add(dealerCardDisplay, BorderLayout.EAST);
JPanel centerSouthSouth = new JPanel();
JPanel centerSouthSouthWest = new JPanel();
centerSouthSouthWest.add(handOneText, BorderLayout.NORTH);
centerSouthSouthWest.add(handOneDisplay, BorderLayout.SOUTH);
JPanel centerSouthSouthEast = new JPanel();
centerSouthSouthEast.add(handTwoText, BorderLayout.NORTH);
centerSouthSouthEast.add(handTwoDisplay, BorderLayout.SOUTH);
centerSouthSouth.add(centerSouthSouthWest, BorderLayout.WEST);
centerSouthSouth.add(centerSouthSouthEast, BorderLayout.EAST);
centerSouth.add(centerSouthNorth, BorderLayout.NORTH);
centerSouth.add(centerSouthSouth, BorderLayout.SOUTH);
center.add(centerNorth, BorderLayout.NORTH);
center.add(centerSouth, BorderLayout.SOUTH);
frame.add(center, BorderLayout.CENTER);
// JPanel left - the center of the program
JPanel left = new JPanel();
JPanel leftNorth = new JPanel();
JPanel leftNorthNorth = new JPanel();
JPanel leftNorthSouth = new JPanel();
JPanel leftSouth = new JPanel();
JPanel leftSouthNorth = new JPanel();
JPanel leftSouthSouth = new JPanel();
leftNorthNorth.add(standButton, BorderLayout.WEST);
leftNorthNorth.add(hitButton, BorderLayout.EAST);
leftNorthSouth.add(doubleButton, BorderLayout.WEST);
leftNorthSouth.add(splitButton, BorderLayout.EAST);
leftNorth.add(leftNorthNorth, BorderLayout.NORTH);
leftNorth.add(leftNorthSouth, BorderLayout.SOUTH);
leftSouthNorth.add(statsText, BorderLayout.WEST);
leftSouthNorth.add(statsDisplay, BorderLayout.EAST);
leftSouthSouth.add(winButton, BorderLayout.WEST);
leftSouthSouth.add(loseButton, BorderLayout.EAST);
leftSouth.add(leftSouthNorth, BorderLayout.NORTH);
leftSouth.add(leftSouthSouth, BorderLayout.SOUTH);
left.add(leftNorth, BorderLayout.NORTH);
left.add(leftSouth, BorderLayout.SOUTH);
frame.add(left, BorderLayout.WEST);
frame.setSize(1600, 200);
frame.setVisible(true);
frame.setResizable(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
The layering for what seems to be the upper layers is not working properly. Any suggestions? The left should have four layers.
A BorderLayout does not "layer".
Only a single component can be added to each of the 5 areas of the BorderLayout.
So, yes, you can create a JPanel and add multiple components to that panel, and then add the panel to an area of the BorderLayout.
JPanel rightSouthSide = new JPanel();
rightSouthSide.add(resetButton, BorderLayout.WEST);
rightSouthSide.add(enterButton, BorderLayout.EAST);
However, the above code is incorrect. The default layout manager of a JPanel is the FlowLayout. So specifying BorderLayout constraints does nothing (and is very confusing).
If by "layers" you mean "rows", then you need to use a panel with a different layout manage. Maybe you can use a BoxLayout to add rows of panels.
Overall, your approach to creating panels with different components is valid, the problem is you also need to use the appropriate layout manager for each of your child panels.
Read the Swing tutorial on Layout Managers for more information about how each of the layout managers work.
I'm trying to get my GUI to appear as such:
Grocery Cart [Refill]
(TextArea)
I am currently using BorderLayout and I would like to stick with it. How can I get the text area underneath the JLabel and the JButton whilst being in the same JPanel? Here is my code for the specific area:
How do I add the text box underneath the two side by side? Whenever I add it, it just goes next to them.
JPanel newPanel = new JPanel();
JLabel label = new JLabel("Grocery Cart");
label.setFont(new Font("Arial", Font.BOLD, 20));
newPanel.add(label);
contentPane.add(newPanel, BorderLayout.WEST) ;
JButton btnNewButton = new JButton("Refill");
btnNewButton.setFont(new Font("Tahoma", Font.PLAIN, 20));
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
newPanel.add(btnNewButton);
If my understanding is correct, here's what you need to do:
JPanel mainPanel = new JPanel(new BorderLayout());
JPanel eastPanel = new JPanel(new BorderLayout());
JTextArea area = new JTextArea("Test content");
JLabel label = new JLabel("Grocery Cart");
label.setFont(new Font("Arial", Font.BOLD, 20));
mainPanel.add(label, BorderLayout.WEST);
JButton btnNewButton = new JButton("Refill");
btnNewButton.setFont(new Font("Tahoma", Font.PLAIN, 20));
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
eastPanel.add(btnNewButton, BorderLayout.WEST);
eastPanel.add(area, BorderLayout.CENTER);
mainPanel.add(eastPanel, BorderLayout.CENTER);
contentPane.add(mainPanel, BorderLayout.NORTH);
The main idea is that in order to construct complex layouts with simple layout types such as border and flow, you have to use container hierarchy and get creative with a combination of flow and border layouts.
In my example the label and button aren't resizable and always have their widths equal to their preferred widths. The text area, however is resizable and takes up its container's remaining width.
Note, that all components added to mainPanel are resizable vertically. In order to keep mainPanel to its preferred height you place it to the contentPane's BorderLayout.NORTH or SOUTH for that matter.
I'm trying to code a grid with bordercolored JPanels on a "bigger" JPanel.
I don't know how to put these Panels in the right size and order to look like a grid. After this i want to put in an Action Listener for the Button so it places an an obeject on a specific Panel on the grid, but right now this is not my Problem. I hope you understand what I mean and can help me. Thanks
package feld;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
public class Spielplan {
public static void main(String[] args) {
JFrame f1 = new JFrame();
f1.setSize(600,600);
JPanel p1 = new JPanel();
JButton tokens = new JButton("Spielsteine setzen");
p1.setLayout(new BorderLayout());
p1.add(tokens, BorderLayout.NORTH);
f1.setVisible(true);
f1.add(p1);
JPanel g1 = new JPanel();
g1.setBorder(BorderFactory.createLineBorder(Color.RED));
g1.setPreferredSize(new Dimension(100, 100));
g1.setVisible(true);
p1.add(g1);
JPanel g2 = new JPanel();
g2.setBorder(BorderFactory.createLineBorder(Color.RED));
g2.setPreferredSize(new Dimension(100, 100));
g2.setVisible(true);
p1.add(g2);
JPanel g3 = new JPanel();
g3.setBorder(BorderFactory.createLineBorder(Color.RED));
g3.setPreferredSize(new Dimension(100, 100));
g3.setVisible(true);
p1.add(g3);
JPanel g4 = new JPanel();
g4.setBorder(BorderFactory.createLineBorder(Color.RED));
g4.setPreferredSize(new Dimension(100, 100));
g4.setVisible(true);
p1.add(g4);
JPanel g5 = new JPanel();
g5.setBorder(BorderFactory.createLineBorder(Color.RED));
g5.setPreferredSize(new Dimension(100, 100));
g5.setVisible(true);
p1.add(g5);
JPanel g6 = new JPanel();
g6.setBorder(BorderFactory.createLineBorder(Color.RED));
g6.setPreferredSize(new Dimension(100, 100));
g6.setVisible(true);
p1.add(g6);
JPanel g7 = new JPanel();
g7.setBorder(BorderFactory.createLineBorder(Color.RED));
g7.setPreferredSize(new Dimension(100, 100));
g7.setVisible(true);
p1.add(g7);
JPanel g8 = new JPanel();
g8.setBorder(BorderFactory.createLineBorder(Color.RED));
g8.setPreferredSize(new Dimension(100, 100));
g8.setVisible(true);
p1.add(g8);
JPanel g9 = new JPanel();
g9.setBorder(BorderFactory.createLineBorder(Color.RED));
g9.setPreferredSize(new Dimension(100, 100));
g9.setVisible(true);
p1.add(g9);
}
}
Try using a GridLayout and adding your Panels to it.
Something like:
JPanel mainPanel = new JPanel(new GridLayout(3,3));
If you want to to still use your button on the top create a panel for the whole screen with the BorderLayout as you did. Then add the Button to NORTH and another JPanel using the GridLayout to the CENTER. Place your JPanels with the colored Borders in the JPanel with the GridLayout.
You should assign BorderLayout to the JFrame. Then assign the JButton to the NORTH position of the JFrame, and the JPanel to the CENTER position. Remember to use .pack() on a JFrame to make sure the elements are fitted properly. Lastly, remember a default closing method, I provided one here .setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);.
The actual grid is provided by setting the panels Layout to GridLayout. Hope this helps you.
import javax.swing.*;
import java.awt.*;
public class Spielplan {
public static void main(String[] args) {
JFrame f1 = new JFrame();
f1.setLayout(new BorderLayout());
f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f1.setPreferredSize(new Dimension(960, 800));
JButton tokens = new JButton("Spielsteine setzen");
f1.add(tokens, BorderLayout.NORTH);
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(3,3));
f1.add(p1, BorderLayout.CENTER);
JPanel g1 = new JPanel();
g1.setBorder(BorderFactory.createLineBorder(Color.RED));
g1.setPreferredSize(new Dimension(100, 100));
g1.setVisible(true);
p1.add(g1);
JPanel g2 = new JPanel();
g2.setBorder(BorderFactory.createLineBorder(Color.RED));
g2.setPreferredSize(new Dimension(100, 100));
g2.setVisible(true);
p1.add(g2);
JPanel g3 = new JPanel();
g3.setBorder(BorderFactory.createLineBorder(Color.RED));
g3.setPreferredSize(new Dimension(100, 100));
g3.setVisible(true);
p1.add(g3);
JPanel g4 = new JPanel();
g4.setBorder(BorderFactory.createLineBorder(Color.RED));
g4.setPreferredSize(new Dimension(100, 100));
g4.setVisible(true);
p1.add(g4);
JPanel g5 = new JPanel();
g5.setBorder(BorderFactory.createLineBorder(Color.RED));
g5.setPreferredSize(new Dimension(100, 100));
g5.setVisible(true);
p1.add(g5);
JPanel g6 = new JPanel();
g6.setBorder(BorderFactory.createLineBorder(Color.RED));
g6.setPreferredSize(new Dimension(100, 100));
g6.setVisible(true);
p1.add(g6);
JPanel g7 = new JPanel();
g7.setBorder(BorderFactory.createLineBorder(Color.RED));
g7.setPreferredSize(new Dimension(100, 100));
g7.setVisible(true);
p1.add(g7);
JPanel g8 = new JPanel();
g8.setBorder(BorderFactory.createLineBorder(Color.RED));
g8.setPreferredSize(new Dimension(100, 100));
g8.setVisible(true);
p1.add(g8);
JPanel g9 = new JPanel();
g9.setBorder(BorderFactory.createLineBorder(Color.RED));
g9.setPreferredSize(new Dimension(100, 100));
g9.setVisible(true);
p1.add(g9);
f1.pack();
f1.setVisible(true);
}
}
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 want to align JButton instances vertically. Can you please suggest a way to do so?
Jbutton jb= new Jbutton();
Jbutton jb1= new Jbutton();
JButton jb3= new JBUtton();
Refer the code below:
private void prepareUI() {
this.setUndecorated(true);
//Preparing control buttons
JButton jb = new MyButton("-");
jb.setActionCommand("Min");
jb.addActionListener(this);
jb1 = new MyButton("[]");//delete this line
jb1.setActionCommand("Max");
jb1.addActionListener(this);
JButton jb2 = new MyButton("X");
jb2.setActionCommand("Close");
jb2.addActionListener(this);
//Preparing panel
JPanel buttonPanel = new JPanel();
BoxLayout boxLayout1 = new BoxLayout(buttonPanel, BoxLayout.Y_AXIS);
buttonPanel.setLayout(boxLayout1);
buttonPanel.add(Box.createVerticalGlue());
buttonPanel.add(jb);
buttonPanel.add(jb1);
buttonPanel.add(jb2);
jb.setFocusable(false);
jb1.setFocusable(false);
jb2.setFocusable(false);
JPanel panel=new JPanel();
BoxLayout boxLayout = new BoxLayout(panel, BoxLayout.LINE_AXIS);
panel.setLayout(boxLayout);
panel.add(Box.createHorizontalGlue())