//创建点对象
class Point{ private int x; private int y; Point(int x,int y){ this.x = x; this.y = y; } public int getX(){ return x; } public int getY(){ return y; }}//创建圆对象
class Circle{ private int r;//圆的半径Circle(int r){
this.r = r; }int judge(Point p){
int xxyy = p.getX() * p.getX() + p.getY() * p.getY(); int rr = this.r * this.r; if(xxyy > rr){ return 1; }else if(xxyy < rr){ return 0; }else{ return -1; } }}//测试:判断点与圆之间的关系public class thisDemo{ public static void main(String[] args){ Point p = new Point(3,4);//点的位置 Circle c = new Circle(5);//创建圆 int ret = c.judge(p); System.out.println(ret); }}