VIP29/JavaSe01/day08/src/com/lc/day08/exer01/Test.java

package com.lc.day08.exer01;

/**
 * ClassName: Test
 *
 * @Author 爱扣钉-陈晨
 * @Create 2023/10/22 9:47
 * @Version 1.0
 */
public class Test {public void swap(Data data){
    data = new Data();
    int temp = data.x;
    data.x = data.y;
    data.y = temp;
}
    public static void main(String[] args) {
        Test tools = new Test();

        Data data = new Data(); //
        data.x = 1;
        data.y = 2;
        System.out.println("交换之前：x = " + data.x +",y = " + data.y);// 1，2
        tools.swap(data);//调用完之后，x与y的值交换？
        System.out.println("交换之后：x = " + data.x +",y = " + data.y);// 1, 2
    }
}
class Data{
    int x ;
    int y;
}