【软件安装】Windows 安装 JDK，配置环境变量

素颜马尾好姑娘i 2023-07-08 05:58 29阅读 0赞

> 以 JDK1.8.0\_241 为例

## 下载 ##

*  [Oracle 官网下载][Oracle]
    
    ![format_png][]

## 安装 ##

*  一直下一步就好
 *  关键的一步，选择安装位置，最好不要更改，默认即可，这个安装位置在之后的环境变量安装需要用到
    
    ![format_png 1][]

## 配置环境变量 ##

`右键此电脑` \-> `属性` \-> `高级系统设置` \-> `环境变量`

![format_png 2][]

*  配置 `JAVA_HOME`
    
    变量名：`JAVA_HOME`
    
    变量值：`JDK 安装的目录`
    
    ![format_png 3][]
 *  配置 `CLASSPATH`
    
    变量名：`CLASSPATH`
    
    变量值：`.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;`
    
    ![format_png 4][]
 *  配置 `Path`
    
    编辑 `Path` 变量，新增两条环境变量
    
    变量值：`%JAVA_HOME%\bin`
    
     `%JAVA_HOME%\jre\bin`
    
    **PS: 若是win7，则在原有的变量值后添加：**
    
     *  `;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;`
    
    ![format_png 5][]

## 验证 ##

C:\Users\Yuu>java -version
    
    # 输出如下
    java version "1.8.0_241"
    Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
    Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)

[Oracle]: https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
[format_png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly95dXUtYmxvZy5vc3MtY24tc2hlbnpoZW4uYWxpeXVuY3MuY29tL1l1dV8yMDIwLTAyLTI1XzEyLTQ4LTUyLnBuZw?x-oss-process=image/format,png
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[format_png 5]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly95dXUtYmxvZy5vc3MtY24tc2hlbnpoZW4uYWxpeXVuY3MuY29tL1l1dV8yMDIwLTAyLTI1XzEyLTQyLTQ2LnBuZw?x-oss-process=image/format,png