1、更换软件源 /etc/yum.repos.d/openEuler.repo
默认的一般不需要换
[rootlocalhost ~]# cat /etc/yum.repos.d/openEuler.repo
#generic-repos is licensed under the Mulan PSL v2.
#You can use this software according to the terms and conditions of the Mulan PSL…
在Java中,引用拷贝、浅拷贝和深拷贝的概念可以通过以下代码案例来说明:
引用拷贝(直接赋值)
案例:
public class Main {public static void main(String[] args) {// 创建一个Person对象Person original new Perso…