boundedshape.java

此程序演示一个完整的图形及交互式的应用程序

import java.awt.*;

public abstract class BoundedShape extends Shape {
   public BoundedShape()
   {
      super();
   }

   public BoundedShape( int x1, int y1, int x2, int y2 )
   {
      super( x1, y1, x2, y2 );
   }

   public int getUpperLeftX()
   {
      return Math.min( getX1(), getX2() );
   }

   public int getUpperLeftY()
   {
      return Math.min( getY1(), getY2() );
   }

   public int getWidth()
   {
      return Math.abs( getX1() - getX2() );
   } 

   public int getHeight()
   {
      return Math.abs( getY1() - getY2() );
   } 
}


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