【Android】錯誤整理

出現:

1.The project was not built since its build path is incomplete. Cannot find the class file for java.lang.Object. Fix the build path then try building this project

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

解決:
可能是因為安裝了多次ADT
下載新的JRE
安裝新的JRE
進入window > preferences > java > Installed JREs