copy.java

来自「Java程序设计实用教程源代码 本书源代码按章分别放置在不同的文件夹中,所有程」· Java 代码 · 共 23 行

import java.awt.*;
import javax.swing.*;
 public class copy extends JFrame {
   public copy (){
     super("复制图形");
     setSize(280,250);
     setVisible(true);
   }
   public void paint( Graphics g ){
      super.paint(g);
      g.setColor( Color.GREEN);
      g.fill3DRect( 110, 110, 50, 50,false);
      g.copyArea(110,110,60,60,70,0);
      g.copyArea(110,110,60,60,-70,0);
      g.copyArea(110,110,60,60,0,-70);
      g.copyArea(110,110,60,60,0,70);
 }
  public static void main(String args[]){
    copy app = new copy ();
    app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}