shape.java

来自「Java程序设计技巧与开发实例附书源代码。」· Java 代码 · 共 20 行

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

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

   public void display()
   {
      System.out.println("Name: " + name);
      System.out.println("Area: " + area);
      System.out.println("Perimeter: " + perimeter);
   }
}