java - Why isn't Eclipse updating the classes?

Question

Since yesterday, Eclipse is not updating the .class files of my project. For example the filename.java is up to date, but the filename.class file has a modified date of yesterday. It used to work just fine. Why is this happening?

Answer 1

Few things I would do or double check:

1. Project > Clean on the project you're working on.
2. Project > Build Automatically - turned on so the code rebuilds in your workspace on saved changes.
3. Window > Preferences and make sure your Installed JRE's and Compilers are matching Java versions