circle.java

来自「《Java语言程序设计》源代码 很好的JAVA入门的好的代码」· Java 代码 · 共 16 行

//circle.java
package shape;
public class circle extends locate implements shapes{
public double radius;
public double area(){
	   return Math.PI*radius*radius;	
}
public double circulms(){
	   return 2*Math.PI*radius;
}
public circle(int x,int y,double r){
	   super(x,y);
	   radius=r;
}
}