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Reference passing 1

2022-04-23 08:35:00 【Silence, your name】

package cn.silence.thread;

import cn.silence.model.User;

public class Demo3 {


    public static void main(String[] args) {

        User aaa = new User("aaa");
        method1(aaa);
        System.out.println("22222222222 = " + aaa);
    }

    private static void method1(User aaa) {
        aaa = new User("bbb");
        System.out.println(aaa);
    }
}

package cn.silence.thread;

public class Demo4 {


    public static void main(String[] args) {

        String aa = " aa";

        method1(aa);

        System.out.println("aa = " + aa);
    }

    private static void method1(String aa) {
        aa="bb";
    }
}

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