Windows 10 配置Java 环境变量

﹏ヽ暗。殇╰゛Y 2021-09-30 13:30 346阅读 0赞

下载 JDK

**下载地址：**[https://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html][https_www.oracle.com_technetwork_java_javase_downloads_index-jsp-138363.html]

点击下载按钮：

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNDE4MzcwOTIzMzMzOTgucG5n][]

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开始安装JDK：

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNDE4MzcxNDM4OTQ3MjQuanBn][]

可以设置为你想安装的路径。

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## 环境变量配置 ##

### 1. 打开 环境变量窗口 ###

右键 **This PC(此电脑) -> Properties（属性） -> Advanced system settings（高级系统设置） -> Environment Variables（环境变量）...**

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDEwOTA0LTM3ODctMzkzMjI5NS00YWI0YzVlNDY1NWU4M2ZmLnBuZw][]

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### 2. 新建JAVA\_HOME 变量 ###

点击 **New（新建）...** 按钮

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDExMDYwLTIxMzEtMzkzMjI5NS1lZjA4ZmI3ZDBlZjA3NjBmLnBuZw][]

输入:

变量名：JAVA_HOME
    变量值：电脑上JDK安装的绝对路径

输入完毕后点击 OK。

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDExMTE0LTM4NDAtMzkzMjI5NS03M2JlNjE3Y2ZmZGFjMjIzLnBuZw][]

JDK 路径下必须能够看到如下的文件。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI3Mzc4NjIx_size_16_color_FFFFFF_t_70][]

### 3. 新建/修改 CLASSPATH 变量 ###

如果存在 CLASSPATH 变量，选中点击 **Edit(编辑)**。

如果没有，点击 **New（新建）...** 新建。

输入/在已有的变量值后面添加：

变量名：CLASSPATH
    变量值：.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;

点击 OK 保存。

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDExMTk4LTIyNTktMzkzMjI5NS1hZmU1N2QxY2FmOTMyNzdjLnBuZw][]

### 4. 修改Path 变量 ###

由于 win10 的不同，当选中 Path 变量的时候，系统会很方便的把所有不同路径都分开了，不会像 win7 或者 win8 那样连在一起。![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI3Mzc4NjIx_size_16_color_FFFFFF_t_70 1][]

新建两条路径：

%JAVA_HOME%\bin
    %JAVA_HOME%\jre\bin

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDExMjgxLTY1NjUtMzkzMjI5NS0wOGQ4NGQxMjVjNzFkMGE4LnBuZw][]

### 4. 检查 打开 cmd，输入 java，出现一连串的指令提示，说明配置成功了: ###

![aHR0cHM6Ly93d3cucnVub29iLmNvbS93cC1jb250ZW50L3VwbG9hZHMvMjAxOC8wOC8xNTM0NDExMzIxLTU0MjAtMzkzMjI5NS0xOTJkM2EzMTUyZGU0NzFlLnBuZw][]

[https_www.oracle.com_technetwork_java_javase_downloads_index-jsp-138363.html]: https://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html
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