gradient1.java

《Java编程基础、应用与实例》 源文件下载

import java.awt.*;
import java.awt.geom.*;
public class Gradient1 extends Frame{
  Paint gPaint1, gPaint2, gPaint3, gPaint4;
  
  public Gradient1(String title){
    super(title);
    gPaint1=new GradientPaint(10, 50, Color.white, 20, 60, Color.blue, true);
    gPaint2=new GradientPaint(100, 50, Color.white, 100, 30, Color.blue, true);
    gPaint3=new GradientPaint(190, 50, Color.white, 270, 250, Color.blue, false);
    gPaint4=new GradientPaint(280, 50, Color.white, 280, 250, Color.blue, false);
  }
  public void paint(Graphics g){
    Graphics2D g2=(Graphics2D)g;
    g2.setPaint(gPaint1);
    g2.fill(new Rectangle2D.Double(10,50,80,200));
    g2.setPaint(gPaint2);
    g2.fill(new Rectangle2D.Double(100,50,80,200));
    g2.setPaint(gPaint3);
    g2.fill(new Rectangle2D.Double(190,50,80,200));
    g2.setPaint(gPaint4);
    g2.fill(new Rectangle2D.Double(280,50,80,200));
  }  
  public static void main(String[] args){
    Frame f=new Gradient1("弊扼单捞记 瓤苞");
    f.setSize(400,300);
    f.setVisible(true);
  }
}