How to change JFrame Defult Shape ?
Hello All,
JFrame defult shape is rectanguler, i want to change it
in oval shape or circluer shape or any other shape.
Any body tell me how it is posible, if any example code then please
Help.
i m thanksfull.
Arif.
Its somehow a tedious job and I havent tryied that!
You have to make use of JNI.
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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;
public class Test {
JScrollPane scroll;
JPanel p=new JPanel(new BorderLayout());
Robot robot=new Robot();
public Test() throws Exception {
final JFrame frame=new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(p);
JButton b=new JButton("Test balloon!");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
TransparentFrame frame1=new TransparentFrame();
int x=frame.getX()-100;
if (x<0) x=0;
int y=frame.getY()-100;
if (y<0) y=0;
frame1.setBounds(x,y,100,100);
frame1.createBalloon();
frame1.setVisible(true);
frame.getContentPane().add(b);
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frame.show();
public static void main(String[] args) throws Exception {
new Test();
class TransparentFrame extends JWindow {
Robot robot;
BufferedImage screenImg;
Rectangle screenRect;
MyPanel contentPanel=new MyPanel();
boolean userActivate=false;
Area Balloon;
public TransparentFrame() {
super();
createScreenImage();
contentPanel.Balloon=Balloon;
this.setContentPane(contentPanel);
this.addComponentListener(new ComponentAdapter() {
public void componentHidden(ComponentEvent e) {}
public void componentMoved(ComponentEvent e) {
resetUnderImg();
repaint();
public void componentResized(ComponentEvent e) {
resetUnderImg();
repaint();
public void componentShown(ComponentEvent e) {}
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
public void windowClosed(WindowEvent e) {
public void windowOpened(WindowEvent e) {
public void windowIconified(WindowEvent e) {
public void windowDeiconified(WindowEvent e) {
public void windowActivated(WindowEvent e) {
public void windowDeactivated(WindowEvent e) {
Balloon=null;
protected void createScreenImage() {
try {
if (robot==null)
robot=new Robot();
catch (AWTException ex) {
ex.printStackTrace();
Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
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screenImg=robot.createScreenCapture(screenRect);
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Rectangle bounds=new Rectangle(0,0,getWidth(),getHeight());
Balloon=new Area(new Rectangle(bounds));
System.err.println(Balloon.getBounds());
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Polygon polygon=new Polygon(new int[] {20,getWidth()/2,getWidth()},new int[] {getHeight()/3,getHeight()/3,getHeight()},3);
Area a=new Area(new Rectangle(bounds));
a.subtract(new Area(content));
a.subtract(new Area(polygon));
Balloon.subtract(a);
contentPanel.Balloon=Balloon;
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if (robot!=null && screenImg!=null) {
Rectangle frameRect=getBounds();
int x=frameRect.x;
contentPanel.paintX=0;
contentPanel.paintY=0;
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contentPanel.paintX=-x;
x=0;
int y=frameRect.y;
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w=screenImg.getWidth()-x;
int h=frameRect.height;
if (y+h>screenImg.getHeight())
h=screenImg.getHeight()-y;
contentPanel.underFrameImg=screenImg.getSubimage(x,y,w,h);
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BufferedImage underFrameImg;
Area Balloon;
int paintX=0;
int paintY=0;
public MyPanel() {
super();
setOpaque(true);
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super.paint(g);
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super.paintComponent(g);
g.drawImage(underFrameImg,paintX,paintY,null);
if (Balloon!=null) {
g.setColor(Color.yellow);
((Graphics2D)g).fill(Balloon);
g.setColor(Color.red);
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return width;hi,
am sorry, i couldn't make out what exactly the problem, but as ur subject line says...
may be the code give below will help you to change button colors in a loop..
for(int i = 0; i < button.length; i++){
int color1 = (int)(250*Math.random());
int color2 = (int)(250*Math.random());
int color3 = (int)(250*Math.random());
Color c = new Color(color1,color2,color3);
button[i] = new JButton("button name");
button.addActionListener(this);
//to check the r, g, b combination.
//System.out.println(c);
button[i].setBackground(c);
button[i].setForeground(Color.white);
//adding into the panel
panel.add(button[i]);
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