遇到的问题-----java The type java.lang.String cannot be resolved. It is indirectly referenced fr

Error!]the type java.lang.String cannot be resolved. it is indirectly referenced from required .class files

有时候用myeclipse导入一个外来的工程时会出现以上错误，这主要是因为你的电脑上安装了多个版本的jdk，解决的办法是：操作步骤：

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。