intellijidea 编译器源码和目标java版本不一致问题

在使用Arrays.copyof的时候发生如下错误

Usage of API documented as @since 1.6+ less... (Ctrl+F1)
This inspection finds all usages of methods that have @since tag in their documentation.  This may be useful when development is performed under newer SDK version as the target platform for production.

工具：ｉｎｔｅｌlijidea 　java 1.8

查了一些资料发现是其他项目的java设置影响了编译器的等级，参考如下博客，可以很完美的解决问题

参考博客：http://blog.csdn.net/u013174217/article/details/53642921