ccircle.java

JAVA 2面向对象程序设计(习题参考答案9-17).rar

class ccircle
{
   private String color;
   private double pi=3.14;
   private double radius;
   
   public void setcolor(String str)
   {
      color=str;
   }
   public void setradius(double r)
   {
      radius=r;
   }
public void setall(String str,double r)
   {
      color=str;
      radius=r;
   }
   public void show()
   {
      System.out.println("color="+color+",radius="+radius);
      System.out.println("area="+pi*radius*radius);
   }
}