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- package com.lc.day08.exer01;
- 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);
- tools.swap(data);
- System.out.println("交换之后:x = " + data.x +",y = " + data.y);
- }
- }
- class Data{
- int x ;
- int y;
- }
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