s.java

（1） 实现一个Point类

package p3;
import p1.point;
import p2.Circle;
public class S
{

	public static void main(String[] args) 
	{
		point p1=new point();
		point p2=new point(3,5);
		System.out.println("x="+p1.getx());
        System.out.println("y="+p2.gety());
        System.out.println("d="+p1.distance(p2));
		Circle c1=new Circle();
		Circle c2=new Circle(3,4,5);
		Circle c3=new Circle(p2,5);
        int k;
		k=c2.relation(c3);
		System.out.println("relation  "+k);



	}
}