It just draws a grid on a single JPanel.

Quote from: graphmastur on March 12, 2011, 09:23:37 pm

It just draws a grid on a single JPanel.

Yes, what I need to do is much harder, I have to draw 64 panels :S

In which case, I could give you code, but because of the JPanel having a border, it won't be 640x640.  What exactly are you trying to do?

nemo, I get the code and it looks awesome, but nothing happens when I run it, did you try it? I tried it:

MainClass.java
import java.awt.*;
import javax.swing.*;
import java.util.Random;
 
public class MainClass extends JFrame{
 
        private NPanel[][] panels = new NPanel[8][8];
 
        public MainClass(String s){
                super(s);
                setSize(8 * 64 + 8, 8 * 64 + 34);
                setDefaultCloseOperation(3);
                Random rand = new Random();
                GridLayout layout = new GridLayout(8, 8);
                getContentPane().setLayout(layout);
                for(int row = 0; row < 8; row++)
                        for(int col = 0; col < 8; col++){
                                panels[row][col] = new NPanel(
                        new Color(rand.nextInt(256), rand.nextInt(256), rand.nextInt(256)));
                        getContentPane().add(panels[row][col]);
                        }
               
        }
        public static void main(String[] args){
                new MainClass("Test");
        }
}
class NPanel extends JPanel{
        public NPanel(Color c){
                setBackground(c);
        }
        public void paintComponent(Graphics g){
                super.paintComponent(g);
        }
}

Thanks much both of you.

Now all I have left to do (and sorry for your time) is to add a function to each panel (a mouse click event). No I'm not asking you to do it for me, just to tell me how to make an event for the first panel, and I'll do the same for the others.

Thanks in advance

oops. i forgot setVisible(true).

yeah, you'll either want to make NPanel just implement MouseListener and all the methods in that interface, or make a new class which extends MouseAdapter and just overrides mouseClicked(MouseEvent e){/*your code on mouse click*/};
also, a hint, MouseEvent's have a method getX() and getY() to tell where the user clicked the mouse within a component (e.g. JPanel)