eclipse Access restriction: The type 'xxx' is not API (restriction on required library '')
eclipse报错：
Access restriction: The type 'ProxyGenerator' is not API (restriction on required library 'D:\software\Java8\jdk1.8.0_144\jre\lib\rt.jar')
后面查看到配置，原来是不知道怎么的导入了2份jdk了
解决方法：
Project -> Properties -> libraries，
remove 一个 JRE System Library就可以了。