windows下

https://blog.csdn.net/yangsummer2426/article/details/80499775
eclipse报jdk错误

Eclipse启动报错：A java runtime Environment(JRE) or java Development……的解决办法

https://blog.csdn.net/weixin_43970743/article/details/88036526

1台电脑安装不同版本jdk

https://blog.csdn.net/programminging/article/details/80770294(推荐)
https://blog.csdn.net/sinat_36265222/article/details/79456275