example14_10.java.bak

不错的教程 适合中高级人员的使用

import java.awt.*;import java.applet.*;
import java.awt.geom.*;
public class Example14_10 extends Applet
{  public void paint(Graphics g)
   {  Graphics2D g_2d=(Graphics2D)g;
      Ellipse2D ellipse1=
      new Ellipse2D. Double (0,2,80,80);
      Rectangle2D rect=
      new Rectangle2D. Double (40,2,80,80);
      Area a1=new Area(ellipse1); Area a2=new Area(rect);
      a1.intersect(a2);             //"与"
      g_2d.fill(a1);
      ellipse1.setFrame(130,2,80,80); rect.setFrame(170,2,80,80);
      a1=new Area(ellipse1); a2=new Area(rect);
      a1.add(a2);             //"或"
      g_2d.draw(a1);
      ellipse1.setFrame(0,90,80,80);rect.setFrame(40,90,80,80);
      a1=new Area(ellipse1);  a2=new Area(rect);
      a1.subtract(a2);             //"差"
      g_2d.draw(a1);
      ellipse1.setFrame(130,90,80,80); rect.setFrame(170,90,80,80);
      a1=new Area(ellipse1);  a2=new Area(rect);
      a1.exclusiveOr(a2);         //"异或"
      g_2d.fill(a1);
   }
}