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---
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icon: edit
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date: 2023-03-31
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category:
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- 系统配置
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- Java
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tag:
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- jvm
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- java_version_manager
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- nvm
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- gvm
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- go
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headerDepth: 5
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---
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# 类似gvm 和 nvm 的Java版本管理工具 j
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# j
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Java Version Manager
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[官网](https://github.com/forget-the-bright/j)
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## 安装
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[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
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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，安装包下载目录，当前使用的java版本目录
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将 JAVA_HOME 配置为 ```USER_HOME\.j\java```
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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
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## 命令
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### 列出
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列出所有可安装版本
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``` shell
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j ls-remote
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```
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列出本地安装版本
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``` shell
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j ls
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```
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### 下载
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``` shell
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j install 8
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```
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### 切换版本
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``` shell
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j use 17
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```
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