Java计算两点间的距离

代码如下

package one;

public class TestPoint {
    public static void main(String[] args){
        Point p1 = new Point();
        p1.x = 12;
        p1.y = 22;
        Point p2 = new Point();
        p2.x = 33;
        p2.y = 15;
        double x = p1.getDistance(p2);
        System.out.println("两点间的距离为" + x);
    }
}

class Point{
    int x;
    int y;
    public double getDistance(Point p){
        double r = Math.sqrt(p.x-x)*(p.x-x)+(p.y-y)*(p.y-y);
        return r;
    }
}