We Keep Coding

Can't get the buttons to be on the center right position

I'm trying to figure out how to position my buttons in the center right position. I added what Ive done so far and I'll add a drawing of how I want it to be.
I'm trying to understand how to determine the position I want in Swing, can't really understand the advantages of each layout.
My code so far:
package Game;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.Timer;
public class MainWindow extends JFrame implements ActionListener {
private JButton exit;
private JButton start_Game;
private ImageIcon puzzleBackground;
// private JLabel back_Label;
// private GridBagConstraints grid = new GridBagConstraints();
private JPanel menu;
public MainWindow()
{
super("Welcome");
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(450,300);
setLocationRelativeTo(null);
this.setLayout(new FlowLayout(FlowLayout.RIGHT));
menu = new JPanel();
menu.setLayout(new BorderLayout());
//setResizable(false);
//===== Background =====
puzzleBackground = new ImageIcon("MyBackground.jpg");
setContentPane(new JLabel(puzzleBackground));
exit = new JButton("Exit");
menu.add(exit, BorderLayout.CENTER);
exit.addActionListener(this);
start_Game = new JButton("Start to play");
menu.add(start_Game, BorderLayout.SOUTH);
exit.addActionListener(this);
start_Game.addActionListener(this);
//
// back_Label = new JLabel(puzzleBackground);
// back_Label.setLayout(new BorderLayout());
//===== Buttons =====
// back_Label.add(exit,BorderLayout.CENTER);
//
// back_Label.add(start_Game,BorderLayout.EAST);
//
add(menu);
setVisible(true);
}
public static void main(String args[])
{
MainWindow a = new MainWindow();
}
#Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == exit)
{
System.exit(0);
}
else
{
//open start up window.
}
}
}

A better way to add a BG image is to use a custom painted JPanel. Then set the layout of the panel and add other panels or components to it. Note that here the buttons are not appearing largely because they are being added to a JLabel.
Here is an alternative that works along the same lines, with the red panel being the panel which custom paints the background image and the menu panel being set to transparent (look for the opaque method).
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.border.*;
public class MainWindow extends JFrame {
private JPanel menu;
private JPanel contentPane = new JPanel(new BorderLayout(4,4));
public MainWindow() {
super("Welcome");
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
//setSize(450, 300); // use pack() instead
setContentPane(contentPane);
contentPane.setBorder(new EmptyBorder(8,8,8,8));
contentPane.setBackground(Color.RED);
contentPane.add(new JLabel(new ImageIcon(
new BufferedImage(400,200,BufferedImage.TYPE_INT_RGB))));
menu = new JPanel(new GridLayout(0,1,10,10));
menu.add(new JButton("Exit"), BorderLayout.CENTER);
menu.add(new JButton("Start to play"), BorderLayout.SOUTH);
JPanel menuCenterPanel = new JPanel(new GridBagLayout());
menuCenterPanel.add(menu);
add(menuCenterPanel, BorderLayout.LINE_END);
pack();
setLocationRelativeTo(null); // do AFTER pack()
setMinimumSize(getSize());
setVisible(true);
}
public static void main(String args[]) {
MainWindow a = new MainWindow();
}
}

So, your basic problem boils down the following lines...
this.setLayout(new BorderLayout());
//...
//===== Background =====
puzzleBackground = new ImageIcon("MyBackground.jpg");
setContentPane(new JLabel(puzzleBackground));
Can you tell me what the layout manager in use actually is now? Wrong. The layout manager is now null, because JLabel doesn't actually have a default layout manager.
So, the "simple" answer would be to move the setLayout call to below the setContentPane call, but this would be a short sighted answer, as JLabel calculates it's preferred based on the icon and text properties only, not it's contents of child components.
A better solution would be to do something demonstrated in How to set a background picture in JPanel (see the second example)
This means that if the image is smaller then the required space, the components will disappear off the screen.
I went through and cleaned up the code slightly, only with the intention of getting the layout to work
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainWindow extends JFrame implements ActionListener {
private JButton exit;
private JButton start_Game;
private JPanel menu;
public MainWindow() {
super("Welcome");
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setLocationRelativeTo(null);
this.setLayout(new BorderLayout());
menu = new JPanel();
menu.setLayout(new GridBagLayout());
exit = new JButton("Exit");
exit.addActionListener(this);
start_Game = new JButton("Start to play");
exit.addActionListener(this);
start_Game.addActionListener(this);
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1;
gbc.fill = gbc.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
menu.add(exit, gbc);
menu.add(start_Game, gbc);
// This is just a filler, it can be removed, but it helps prove the point
add(new JPanel() {
#Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
});
add(menu, BorderLayout.EAST);
pack();
setVisible(true);
}
public static void main(String args[]) {
MainWindow a = new MainWindow();
}
#Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == exit) {
System.exit(0);
} else {
//open start up window.
}
}
}
I'd also like to point out that extending directly from JFrame is also short sighted, it's locking you into a single use container and you're not actually adding any new functionality to the class.
Example of better structure...
The following is a simple example of a possibly better structure. It's missing the concept of a "controller", which controls stuff and "model" which maintains the state information which is used by the UI to display "stuff", but gives a starting point
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Main {
public static void main(String args[]) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Welcome");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new MainPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class MainPane extends JPanel {
public MainPane() {
setLayout(new BorderLayout());
// This is just a filler, it can be removed, but it helps prove the point
add(new JPanel() {
#Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
});
add(new MenuPane(), BorderLayout.EAST);
}
}
public class MenuPane extends JPanel {
private JButton exit;
private JButton start_Game;
private JPanel menu;
public MenuPane() {
menu = new JPanel();
menu.setLayout(new GridBagLayout());
ActionHandler actionHandler = new ActionHandler();
exit = new JButton("Exit");
exit.addActionListener(actionHandler);
start_Game = new JButton("Start to play");
start_Game.addActionListener(actionHandler);
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1;
gbc.fill = gbc.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
menu.add(exit, gbc);
menu.add(start_Game, gbc);
}
public class ActionHandler implements ActionListener {
#Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == exit) {
System.exit(0);
} else {
//open start up window.
// This should be used to notifiy a controller class
// that some new action needs to take place, the controller
// is then responsible for making it happen
}
}
}
}
}

Doing UI in Java is not advised, but ignoring that.
You get (calculate) the height and width of the screen. Then start drawing buttons depending on that. Drawing a button on screens 50% of pixel value width and 50% of pixel value of height will center the button.
Simply crate buttons with variable location that is calculated from main screen px size and place them where ever you want.

I can't move the buttons to the bottom - JFrame

I tried using GridLayout and BorderLayout but could not make my Buttons go below the mouth of the dog (picture). After making the button below the dog mouth, how do I add function to the buttons? For Settings, how do I make it open another window after I clicked on it and I can close the settings window instead of the whole thing. Thank you!
Here is my code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
class Codegi extends JFrame {
public Codegi() {
JFrame frame = new JFrame();
try {
frame.setContentPane(new JLabel(new ImageIcon(ImageIO.read(new File("enter image description here[1]")))));
} catch (IOException e) {
e.printStackTrace();
}
frame.pack();
frame.setLayout(new FlowLayout());
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
p1.setOpaque(false);
p2.setOpaque(false);
p1.setLayout(new BorderLayout(0, 20));
//JButton b1 = new JButton("START");
//JButton b2 = new JButton("SETTINGS");
p2.add(p1);
p1.add(new JButton("SETTINGS"), BorderLayout.SOUTH);
p1.add(new JButton("START"), BorderLayout.CENTER);
//p1.add(b1);
//p1.add(b2);
frame.add(p2);
//design of button
//Font largefont = new Font("TimesRoman", Font.BOLD, 20);
//b1.setBackground(Color.ORANGE);
//b2.setBackground(Color.ORANGE);
//b1.setForeground(Color.BLACK);
//b2.setForeground(Color.BLACK);
//b1.setFont(largefont);
//b2.setFont(largefont);
frame.setTitle("Codegi:Programming made fun");
frame.setSize(498, 687);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(467, 627);
}
public static void main(String args[]) {
new Codegi();
}
}
Screenshot

Set the layout to null
view.setLayout(null);
and then set the position of buttons like below
btn.setBounds(starting x-coordinate,starting y-coordinate,btn width,btn height);
remove panels by setVisible(false);
and show new ones with setVisible(true); on btn click event

How do I add a background image on a JFrame using a JLabel?

I am trying to display a background image on the JFrame using a JLabel. The code runs and the buttons appear, but the image does not. I have researched for solutions, yet I have not found one for my code specifically. Any help would be greatly appreciated.
/**
* Adds details to interface and programs buttons
*
* Imani Davis
* Final Project
*/
import java.awt.*;
import java.awt.GridBagLayout;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.ImageIcon;
import javax.swing.border.EmptyBorder;
public class Use_PF_Interface extends JFrame implements Pet_Fish_Interface
{
// instance variables - replace the example below with your own
private JFrame window;
private JPanel panel1, panel2, panel3;
private JLabel lblBackgroundImage = new JLabel();
private JButton feedButton = new JButton("Feed Fish");
private JButton playGamesButton = new JButton("Play Game");
/**
* Constructor for objects of class Use_PF_Interface
*/
public Use_PF_Interface()
{
setTitle("Virtual Pet Fish");
setSize(650, 650);
//initializes panels and panel layout
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel1.setLayout(new FlowLayout());
panel2.setLayout(new FlowLayout());
panel3.setLayout(new FlowLayout());
lblBackgroundImage.setLayout(new FlowLayout());
//sets background image of panel
lblBackgroundImage.setIcon(new ImageIcon("C:\\Users\\This PC\\Desktop\\OCEAN2.JPEG"));
panel1.add(lblBackgroundImage);
validate();
//adds button to panels
panel2.add(feedButton);
panel2.add(playGamesButton);
//add panels to frame
add(panel1);
add(panel2);
}
}

JFrame uses a BorderLayout by default, a BorderLayout can only manage a single component within any of the five available positions it provides, this means that panel2 is most likely the only component getting shown.
An alternative is to add you components to the JLabel, but remember, JLabel doesn't have a default layout manager. Also, remember, JLabel only uses the icon and text properties to calculate its preferred size, so if the contents require more space, they will be clipped.
Start by having a look at How to Use BorderLayout for more details
Also, remember, most Swing components are opaque generally, so you need to set them transparent when you want to do something like this
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Use_PF_Interface extends JFrame {
// instance variables - replace the example below with your own
private JPanel panel2;
private JLabel lblBackgroundImage = new JLabel();
private JButton feedButton = new JButton("Feed Fish");
private JButton playGamesButton = new JButton("Play Game");
/**
* Constructor for objects of class Use_PF_Interface
*/
public Use_PF_Interface() {
setTitle("Virtual Pet Fish");
setSize(650, 650);
//initializes panels and panel layout
panel2 = new JPanel();
panel2.setOpaque(false);
panel2.setLayout(new FlowLayout());
lblBackgroundImage.setLayout(new FlowLayout());
//sets background image of panel
lblBackgroundImage.setIcon(new ImageIcon("..."));
lblBackgroundImage.setLayout(new BorderLayout());
//adds button to panels
panel2.add(feedButton);
panel2.add(playGamesButton);
lblBackgroundImage.add(panel2);
add(lblBackgroundImage);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new Use_PF_Interface();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}

Try this,
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
public class ImageInFrame {
public static void main(String[] args) throws IOException {
String path = "Image1.jpg";
File file = new File(path);
BufferedImage image = ImageIO.read(file);
JLabel label = new JLabel(new ImageIcon(image));
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(label);
f.pack();
f.setLocation(200,200);
f.setVisible(true);
}
}

How can we put value on text field on output screen?

I want to put value in txtf1 at output screen and get it. How can we put value on text field on output screen?
import java.awt.Color;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
public class demog extends JPanel implements ActionListener{
private TextField textf, txtf1;
public void jhand(){
textf = new TextField();
textf.setSize(40, 40);
textf.setText("20");
textf.setEditable(false);
textf.setBackground(Color.WHITE);
textf.setForeground(Color.BLACK);
//textf.setHorizontalAlignment(SwingConstants.CENTER);
textf.setLocation(15, 15);
//textf.addActionListener(this);
txtf1 = new TextField();
txtf1.setSize(40, 40);
txtf1.getText();
txtf1.setEditable(false);
txtf1.setBackground(Color.WHITE);
txtf1.setForeground(Color.BLACK);
//txtf1.setHorizontalAlignment(SwingConstants.CENTER);
txtf1.setLocation(50, 50);
JFrame frame = new JFrame("demo");
JPanel p = new JPanel();
p.setOpaque(true);
p.setBackground(Color.WHITE);
p.setLayout(null);
frame.setContentPane(p);
frame.setSize(500,500);
frame.setVisible(true);
p.add(textf);
p.add(txtf1);
}
public void actionPerformed(ActionEvent evt) {
String text = textf.getText();
System.out.println(text);
}
public static void main(String... args){
demog g = new demog();
g.jhand();
}
}

You have to change some of your code in order to work. You had some problem in your code which I resolved them for you in the following code. See the comments to learn some in swing ;-)
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.WindowConstants;
// Use upper Case in the start of you class names:
public class Demog extends JPanel implements ActionListener {
private JTextField textf, txtf1;
public Demog() {
jhand();
}
public void jhand() {
setLayout(new FlowLayout()); // Always set the layout before you add components
// you can use null layout, but you have to use setBounds() method
// for placing the components. For an advanced layout see the
// tutorials for GridBagLayout and mixing layouts with each other.
textf = new JTextField(); // Do not mix AWT component with
// Swing (J components. See the packages)
//textf.setSize(40, 40); // Use setPreferredSize instead
textf.setPreferredSize(new Dimension(40, 40));
textf.setText("20");
textf.setEditable(false); // Text fields are for getting data from user
// If you need to show something to user
// use JLabel instead.
textf.setBackground(Color.WHITE);
textf.setForeground(Color.BLACK);
add(textf);
txtf1 = new JTextField();
//txtf1.setSize(40, 40); Use setPreferredSize instead
txtf1.setPreferredSize(new Dimension(40, 40));
txtf1.getText();
txtf1.setEditable(false);
txtf1.setBackground(Color.WHITE);
txtf1.setForeground(Color.BLACK);
add(txtf1);
JButton b = new JButton("Click ME!");
b.addActionListener(this);
add(b);
}
public void actionPerformed(ActionEvent evt) {
String text = textf.getText();
JOptionPane.showMessageDialog(Demog.this, "\"textf\" text is: "+text);
}
public static void main(String[] args) {
JFrame frame = new JFrame("demo");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
Demog p = new Demog();
p.setBackground(Color.WHITE);
frame.setContentPane(p);
frame.setSize(500, 500);
frame.setVisible(true);
}
}
Good Luck.

Centering image in a JFrame?

I'm creating an about JFrame for my program. I have an icon which I used for the program and I have that show up as the first thing on the about JFrame, but I'm having issues trying to center the image. If I do some kind of centering it screws up the whole alignment of everything else.
I'm trying to have all the JLabels, other than the icon, to be left aligned. Then have the icon aligned to the center.
I had to remove some personal information, whatever I did remove I put them between "[]".
import java.awt.Dimension;
import java.awt.Font;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class About extends JFrame {
public About() {
super("About [PROGRAM]");
setIconImage([PROGRAM].getInstance().setIcon());
JPanel main = new JPanel();
main.setLayout(new BoxLayout(main, BoxLayout.Y_AXIS));
main.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
JLabel icon = new JLabel("", new ImageIcon(getClass().getResource(Constants.ICON_FULL)), JLabel.CENTER);
JLabel name = new JLabel("[PROGRAM]");
JLabel expandedName = new JLabel("[PROGRAM DESCRIPTION]");
JLabel copyright = new JLabel("[COPYRIGHT JUNK]");
JLabel credits = new JLabel("[CREDITS]");
name.setFont(new Font(name.getFont().getFamily(), Font.BOLD, 18));
copyright.setBorder(BorderFactory.createEmptyBorder(0,0,10,0));
main.add(icon);
main.add(Box.createRigidArea(new Dimension(0, 10)));
main.add(name);
main.add(expandedName);
main.add(copyright);
main.add(credits);
add(main);
pack();
setLocationRelativeTo(null);
setVisible(true);
}
}

Consider using some layouts to help you out. Ones that come to mind include BorderLayout with the icon in the BorderLayout.CENTER position. You can stack stuff on one side using a BoxLayout using JPanel that is added to the main BorderLayout-using JPanel.
e.g.,
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;
#SuppressWarnings("serial")
public class About extends JDialog {
public static final String IMAGE_PATH = "http://upload.wikimedia.org/wikipedia/"
+ "commons/thumb/3/39/European_Common_Frog_Rana_temporaria.jpg/"
+ "800px-European_Common_Frog_Rana_temporaria.jpg";
public About(JFrame frame) {
super(frame, "About [PROGRAM]", true);
ImageIcon myIcon = null;
try {
URL imgUrl = new URL(IMAGE_PATH);
BufferedImage img = ImageIO.read(imgUrl);
myIcon = new ImageIcon(img);
} catch (MalformedURLException e) {
e.printStackTrace();
System.exit(-1);
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
JPanel main = new JPanel(new BorderLayout());
main.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
JLabel centerLabel = new JLabel(myIcon);
JLabel name = new JLabel("[PROGRAM]");
JLabel expandedName = new JLabel("[PROGRAM DESCRIPTION]");
JLabel copyright = new JLabel("[COPYRIGHT JUNK]");
JLabel credits = new JLabel("[CREDITS]");
name.setFont(new Font(name.getFont().getFamily(), Font.BOLD, 18));
copyright.setBorder(BorderFactory.createEmptyBorder(0, 0, 10, 0));
int eb = 20;
centerLabel.setBorder(BorderFactory.createEmptyBorder(eb, eb, eb, eb));
JPanel leftPanel = new JPanel();
leftPanel.setLayout(new BoxLayout(leftPanel, BoxLayout.PAGE_AXIS));
leftPanel.add(name);
leftPanel.add(Box.createVerticalGlue());
leftPanel.add(expandedName);
leftPanel.add(copyright);
leftPanel.add(credits);
leftPanel.add(Box.createVerticalGlue());
main.add(centerLabel, BorderLayout.CENTER);
main.add(leftPanel, BorderLayout.LINE_START);
add(main);
pack();
}
public static void main(String[] args) {
final JFrame frame = new JFrame("GUI");
JPanel panel = new JPanel();
panel.add(new JButton(new AbstractAction("About") {
#Override
public void actionPerformed(ActionEvent e) {
About about = new About(frame);
about.setLocationRelativeTo(frame);
about.setVisible(true);
}
}));
frame.add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}