Generate Unique Colors

import java.awt.*;

import java.util.List;

import java.util.*;

import javax.swing.*;

public class KeyColors {

public static void main(String[] args) {

String s = "abcdefgh";

String[] keys = s.split("(?<=[\\w\\s])");

JPanel panel = new JPanel();

ColorKeys colorKeys = new ColorKeys();

for(int j = 0; j < keys.length; j++) {

Color color = colorKeys.getKeyColor();

panel.add(getLabel(keys[j], color));

}

JOptionPane.showMessageDialog(null, panel, "",

JOptionPane.PLAIN_MESSAGE);

}

private static JLabel getLabel(String s, Color color) {

JLabel label = new JLabel(s, JLabel.CENTER);

label.setForeground(color);

label.setPreferredSize(new Dimension(40,40));

label.setBorder(BorderFactory.createEtchedBorder());

return label;

}

}

class ColorKeys {

Random seed = new Random();

List colors = new ArrayList();

int inc = 51; // 216 unique colors

public Color getKeyColor() {

while(true) {

Color color = getColor();

if(!colors.contains(color)) {

colors.add(color);

return color;

}

}

}

private Color getColor() {

int[] n = new int[3];

for(int j = 0; j < 3; j++) {

n[j] = seed.nextInt(6);

}

return new Color(n[0]*inc, n[1]*inc, n[2]*inc);

}

}

Message was edited by:

crwood

crwooda at 2007-7-11 23:53:45 >