The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files

运行eclipse时，出现这个bug,无法编译。

按照：

project->properties->Java Bulid Path  将原有的jdk删除  

然后Java Build Path -----> Libraries---->Add Libraries----->JRE System Library   选择MyEclipse自带的jdk或是选择自己适合的包即可。