/**

* @author: 马士兵教育

* @create: 2019-08-24 16:13

*/

public class Point {

int x;

int y;

//设置二维的坐标点

public void set(int xx,int yy){

x = xx;

y = yy;

}

public double calcDistance(Point p){

return Math.sqrt((p.x-x)*(p.x-x)+(p.y-y)*(p.y-y));

}

public void changePoint(Point p){

int a = p.x;

p.x = x;

x = a;

int b = p.y;

p.y = y;

y = b;

}

public void show(){

System.out.println("["+x+","+y+"]");

}

public static void main(String[] args) {

Point p1 = new Point();

p1.set(3,5);

Point p2 = new Point();

p2.set(2,4);

System.out.println(p1.calcDistance(p2));

p1.changePoint(p2);

p1.show();

p2.show();

}

}