javafx circle类 Javafx circle类 圆心坐标

要求如下：

1. 可以生成具有特定圆心、半径的圆对象
2. 提供可以设置成员变量的方法
3. 计算一个点（Point）对象是否在圆（Circle）对象内

源代码如下：

import java.util.Scanner;

class Point{//Point点类，用于确定一个点的坐标
	double x;//x坐标
	double y;//y坐标
	
	public Point(double x,double y) {
		this.x = x;
		this.y = y;
	}
	
	void showPoint() {//显示点的坐标
		System.out.print("点的坐标为： ");
		System.out.println("(" + x + "," + y +  ")");
	}
}

public class Circle {//Circle圆类，用于确定一个圆
	private double radius;//圆的半径
	private Point point;//为类Point定义对象point作为圆的圆心坐标
	
	public Circle(Point point,double radius) {
		this.point = point;
		this.radius = radius;
	}
	
	void showCircle(){//显示圆的圆心坐标和半径
		System.out.print("圆心坐标为： ");
		System.out.println("(" + point.x + "," + point.y +  ")");
		System.out.print("圆的半径为： ");
		System.out.println(radius);
	}

	void judgement(Point a,Circle b){//判断点与圆的关系（包括圆外、圆上、圆内）
		if((a.x-point.x)*(a.x-point.x)+(a.y-point.y)*(a.y-point.y)>(b.radius*b.radius))
			System.out.print("点在圆外！");
		else if((a.x-point.x)*(a.x-point.x)+(a.y-point.y)*(a.y-point.y)==(b.radius*b.radius))
			System.out.print("点在圆上！");
		else if((a.x-point.x)*(a.x-point.x)+(a.y-point.y)*(a.y-point.y)<(b.radius*b.radius))
			System.out.print("点在圆内！");
	}	
		
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner in = new Scanner(System.in);//键盘输入
		System.out.print("请输入点的坐标（x坐标、y坐标）    ： ");//输入提示语
		Point point1 = new Point(in.nextDouble(),in.nextDouble());//点的坐标
		System.out.print("请输入圆的坐标（x坐标、y坐标、半径）： ");//输入提示语
		Point point2 = new Point(in.nextDouble(),in.nextDouble());//圆心坐标
		Circle circle1 = new Circle(point2,in.nextDouble());
		point1.showPoint();
		circle1.showCircle();
		circle1.judgement(point1, circle1);
		in.close();
	}

}