Eclipse：文件中甚至项目中都不存在错误

Question

Eclipse randomly won't let me compile my project because of errors in java files that aren't even in the project. They're part of another project I made over a week ago.

Here are the screenshots of the expanded hierarchy to show I'm not blind:

Here's a screenshot after going to Window > Show View > Problems:

I tried commenting out all the code in the DB class leaving only public class DB { } uncommented as a temporary solution, and it still throws an error saying The declared package "" does not match the expected package RemoteSystemsTempFiles.urlToMyDirectoryOnARemoteServer . So I'm guessing something is up with the temp files.

Answer 1

The path in your problems window seems to show the files are in MyProject/src/re...<something> .

It looks like you have a filter on in the first view that is hiding files that are actually in the project build path and have these errors (in particular DB.java and Config.java )?

To check this

In the navigator window - little down arrow on the top right of (sub)window, tool tip is View menu , one of items on menu is Filters... . You see a list of filters being applied to files for display - check for names or types being hidden.

EDIT

Following OP comments - unchecking filter on Remote Systems File Cache revealed the files and the compilation error was solved by deleting the remote temp directory associated with the previous project