ECLIPSE “CANNOT BE RESOLVED TO A TYPE” ERROR

可能还有其他方法、可能这个方法对你不管用，但是确实解决了我现在的问题~

Clean, refresh, build, restart

Also, remember any external build/clean scripts you might be using. For instance, Grails has a command line “clean” you may have to invoke. Same if you have Ant or Maven builds.

David
Resnick (comment below) discovered this tip for those with an external build script:

Windows–>Preferences–>Java–>Compiler–>Building–>Output folder–>”Rebuild class files modified by others”.

This exists in Eclipse 3.5; I’m not sure about earlier versions.