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---
icon: edit
date: 2023-03-31
category:
- 系统配置
- Java
tag:
- jvm
- java_version_manager
- nvm
- gvm
- go
headerDepth: 5
---
# 类似gvm 和 nvm 的Java版本管理工具 j
# j
[官网 ](https://github.com/forget-the-bright/j )
## 安装
下载 ](https://github.com/forget-the-bright/j/releases ) 下载自己需要的版本, 到自己自定义的目录 修改可执行文件名称为j
默认文件下载安装在用户目录下 ```.j```目录，目录下 ```versions```, ```downloads```, ```java``` 分别是本地安装目录， ，
将 JAVA_HOME 配置为 ```USER_HOME\.j\java```
指定安装目录需要 添加环境变量 ```J_HOME``` 之后将 JAVA_HOME 设置为 ```J_HOME\.j\java``` 即可
## 命令
### 列出
列出所有可安装版本
``` shell
j ls-remote
```
列出本地安装版本
``` shell
j ls
```
### 下载
j install 8
```
### 切换版本
``` shell
j use 17
```
