Drawing a line to JFrame???

[zahit]

hi guys, my line doesn't appear on the frame. what's the problem?

import java.util.*;
import java.io.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;

public class Operation {

public static void main(String args[]){
DrawPanel panel = new DrawPanel();
JFrame frame = new JFrame("Voronoi Diagram");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.add(panel);
frame.setSize(800, 600);
frame.setLocation(220, 150);
frame.setVisible(true);
}
}

public class DrawPanel extends JPanel{

private static final long serialVersionUID = 1L;

public void PaintComponent(Graphics g){
super.paintComponent(g);
g.setColor(Color.orange);
g.drawLine(5, 10, 50, 60);
}
}

[BigDaddyLH]

hi guys, my line doesn't appear on the frame. what's the problem?

public void PaintComponent(Graphics g){ // <-- mistake on this line
super.paintComponent(g);
g.setColor(Color.orange);
g.drawLine(5, 10, 50, 60);
}
}

You misspelled "paintComponent" -- it starts with a lowercase 'p'.

In Java versions 5 or later, you can use the attribute @Override to catch this sort of typo:

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    ///etc...
}

http://java.sun.com/j2se/1.5.0/docs/...notations.html

[zahit]

thanks, it took so much time for me :-)