colordemo.java

这是《Java 2 简明教程(第2版)》一书配套的源代码。

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Color;

public class ColorDemo extends Applet
{
 int red,green,blue;
 float red1,green1,blue1;
 String s;

 public void init()
 {
 s=new String("This is a beautiful color java world!");
 red=100; blue=200; green=125;
 red1=0.5f; green1=0.1f; blue1=0.7f;
 } 
 public void paint(Graphics g)
  {
   Color c=new Color(red,green,blue);
   g.setColor(c);
   g.drawString(s,20,30);
   g.drawString("Current RGB:"+g.getColor(),20,60);
   Color c1=new Color(red1,green1,blue1);
   g.setColor(c1);
   g.drawString(s,20,90);
   g.drawString("Current RGB:"+g.getColor(),20,120);
  }
}