选择File——》Project Structure
弹出框中选择Project
看到中间的Project SDK项。
点击Edit或者New
然后就可以选择Build target 和Java SDK了
![clipboard[11]](https://images0.cnblogs.com/blog/28602/201307/18182833-487f6149846a475b8a1b9fc9b08b946f.png "clipboard[11]")
![clipboard[13]](https://images0.cnblogs.com/blog/28602/201307/18182850-c31db6d6193645bfa6eea418db6ce8c0.png "clipboard[13]")
![clipboard[15]](https://images0.cnblogs.com/blog/28602/201307/18182926-cf91d6ccf209451b93f5488f2034a39f.png "clipboard[15]")