在项目目录执行git init，此目录将纳入git管理，git将会自动生成.git文件夹，用以记录git配置(.git/config)和版本信息(commit-id)和文件集合；git最重要的动作是commit！！！几乎所有的操作都是以commit作为基准。改动前后：有没改动，是以上次commit的内容(文件集合和commit-id)为基础，本地当前工作空间working tree有没改动，改动之

Updating your team to the current version of Postman:url: https://learning.postman.com/docs/administration/updating/Installing earlier versions of Postman:Downloading Postman v9:Download Postman v9 fo

import java.util.List;public class Person {private String name;private Integer age;private Gender gender;private List<String> hobbies;public enum Gender {MALE("male"),FEMALE("female");private .