# 检查Java是否正确安装&配置

这一步主要是为了防止没有正确的安装或者配置Java

- ##### Ctrl+R启动运行-输入**cmd**，然后回车/确定
    
    ##### [![image.png](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/scaled-1680-/Eh1WccUddD3Y2IDb-image.png)](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/Eh1WccUddD3Y2IDb-image.png)
- ##### 打开cmd后，输入：  
    
    
    ```
    java -version
    ```
    
    ##### [![image.png](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/scaled-1680-/nHRN8hgbFsV27mCY-image.png)](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/nHRN8hgbFsV27mCY-image.png)
- ##### 如果返回如下图所示，则说明配置正确；如果不同，请返回[安装它！](https://wikidocs.tdogmc.cn/books/java/page/f340f "安装它！")重新配置
    
    <p class="callout info">注意此处的版本为刚刚配置的17.0.12，如不同请检查[这里是否配置正确](https://wikidocs.tdogmc.cn/books/java/page/java-F6q#bkmrk-shangyi)</p>
    
    ##### [![image.png](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/scaled-1680-/ZLP6ouD5QNnMmy17-image.png)](https://wikidocs.tdogmc.cn/uploads/images/gallery/2024-08/ZLP6ouD5QNnMmy17-image.png)