如何安装以及配置jdk8的环境变量（建议收藏）

秒速五厘米 2023-10-04 10:02 45阅读 0赞

## JDK8的卸载和安装操作 ##

### 安装JDK: ###

\[JDK8下载链接\] ：\[https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html\]

1.百度搜索JDK8，找到下载地址

2.同意协议

3.下载电脑对应的版本（32位还是64位）

（1）桌面电脑图标点右键->属性

![å›¾ç‰‡][08687df936cbf38f64600a9c2d1fc249.png]

![å›¾ç‰‡][9e0aa5a81c34453395409dd0c8a2438b.png]

--------------------

（2）有的电脑图标在桌面是一个快捷方式，这种方法不能显示出来，可以打开任意一个文件夹，再右键点击此电脑，左击点击属性.

![å›¾ç‰‡][48e48cb9e06b1b6d61f01c0071ce33f8.png]

--------------------

**注意点** ：在下载之前我们可能需要去注册个账号，注册好后即可下载  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center]

4.双击安装JDK  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 1]

5.***记住安装的路径***

6.配置环境变量

（1）我的电脑->右键->属性

（2）环境变量->添加JAVA\_HOME（在系统变量添加）->新建->  
![在这里插入图片描述][20210404212944992.png_pic_center]

7.配置path变量

（1）在系统变量找到Path->双击  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 2]

（3）点击确定

7.检测JDK是否安装成功

（1）windows+R

（2）输入cmd

（3）输入java -version  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 3]

***证明安装成功！！！***

--------------------

### 卸载JDK: ###

1.找到JDK安装的目录

2.我的电脑->右键->属性

3.控制面板->系统和安全->系统->高级系统设置->环境变量->![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 4]

\->红色标记即为你安装JDK的地方->顺着存放地址找到java->直接干掉jdk，连包删除

4.然后再回来清理环境变量->![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 5]

\->![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 6]

\->![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 7]

5.删除完之后点击确定

6.检测是否删除完成

(1) windows+R

(2) 输入cmd

(3) 输入java -version

(4) 显示java不是内部或外部命令，也不是可运行命令的程序或批处理文件

**证明已删除完成！！！**

--------------------

[08687df936cbf38f64600a9c2d1fc249.png]: https://img-blog.csdnimg.cn/img_convert/08687df936cbf38f64600a9c2d1fc249.png
[9e0aa5a81c34453395409dd0c8a2438b.png]: https://img-blog.csdnimg.cn/img_convert/9e0aa5a81c34453395409dd0c8a2438b.png
[48e48cb9e06b1b6d61f01c0071ce33f8.png]: https://img-blog.csdnimg.cn/img_convert/48e48cb9e06b1b6d61f01c0071ce33f8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center]: https://img-blog.csdnimg.cn/20210404212758991.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 1]: https://img-blog.csdnimg.cn/20210404212923334.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[20210404212944992.png_pic_center]: https://img-blog.csdnimg.cn/20210404212944992.png#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 2]: https://img-blog.csdnimg.cn/20210404212958812.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 3]: https://img-blog.csdnimg.cn/20210404213033185.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 4]: https://img-blog.csdnimg.cn/20210404213125936.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 5]: https://img-blog.csdnimg.cn/20210404213146392.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 6]: https://img-blog.csdnimg.cn/20210404213212169.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ_size_16_color_FFFFFF_t_70_pic_center 7]: https://img-blog.csdnimg.cn/20210404213243964.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MDU2OTc4OQ==,size_16,color_FFFFFF,t_70#pic_center