I have built a jar file using Netbeans and it's working good in my system. But I want to make jar files which is capable of running in all systems, which has JRE and it should work correctly even the classpath is not set in that system.
package circle;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class Circle {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Circle().createAndShowGUI();
}
});
}
private void createAndShowGUI() {
JFrame f = new JFrame("Swing Paint Demo");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new MyPanel());
f.pack();
f.setVisible(true);
}
class MyPanel extends JPanel {
public MyPanel() {
setBorder(BorderFactory.createLineBorder(Color.black));
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
startX=e.getX();
startY=e.getY();
}
});
addMouseMotionListener(new MouseAdapter() {
public void mouseDragged(MouseEvent e) {
X=e.getX();
Y=e.getY();
repaint();
}
});
}
public Dimension getPreferredSize() {
return new Dimension(250,200);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//g.setColor(Color.RED);
//g.fillRect(squareX,squareY,squareW,squareH);
g.setColor(Color.BLACK);
g.drawOval(startX,startY,X-startX,Y-startY);
g.fillOval(startX,startY,X-startX,Y-startY);
}
}
private int startX,startY,X,Y;
}
