package com.hanqi.test;

public class Point {

private double x,y;

public double getX() {    return x;}public void setX(double x) {    this.x = x;}public Point(double x,double y){    this.x=x;    this.y=y;    System.out.println("x="+x+";y="+y);}

}

//主类

package com.hanqi.test;

public class A {

public static void main(String[] args) {        Point b=new Point(5, 15);    b.setX(10);    System.out.println(b.getX());}

}

//运行结果

x=5.0;y=15.0

10.0