stdtriangle.java

这个是java设计模式的文件 可能对了解设计思想有一定帮助

import java.awt.*;
public class stdTriangle extends Triangle
{
   public stdTriangle(Point a, Point b, Point c)
   {
    super(a, b, c);
   }
   public Point draw2ndLine(Graphics g, Point a, Point b)
   {
      g.drawLine(a.x, a.y, b.x, b.y);
      return  b;
   }
}