shape.java

Java程序设计技巧与开发实例附书源代码。

public class Shape
{
   protected String name;
   protected double area, perimeter;

   public Shape()
   {
      name = "undetermined";
      area = perimeter = 0;
   }

   public void display()
   {
      System.out.println("******** GEOMETRIC SHAPE ******************");
      System.out.println(name + ", area " + area + ", perimeter " + perimeter);
   }
}