shape2.java

该原代码为＜Java编程基础、应用与实例＞的附盘代码

import java.awt.*;
import java.awt.geom.*;
public class Shape2 extends Frame{
  public Shape2(String title){
    super(title);
  }
  public void paint(Graphics g){
    Graphics2D g2=(Graphics2D)g;
    GeneralPath gp=new GeneralPath();
    gp.moveTo(150,50);
    gp.lineTo(150,250);
    gp.lineTo(250,150);
    gp.lineTo(50,150);
    gp.closePath();
    
    g2.draw(gp);
  }
  public static void main(String[] args){
    Frame f=new Shape2("GeneralPath");
    f.setSize(300,300);
    f.setVisible(true);
  }
}