eclipse - A class file was not written. The project may be inconsistent, if so try ..

[Nickleus]

in eclipse i had an empty bin output folder for my class files except one path to one specific file. none of the other files would build and create class files even though there was nothing wrong with the code. i would get this error in the file, next to the package name:

A class file was not written. The project may be inconsistent, if so try refreshing this project and rebuilding it.

to get things to work i had to delete the parent folder for this class in the bin folder, then make a change in the java file then save the file. then it would build. but none of the other classes would create a class file so i also had to delete a jar from the classpath, then save the project. then i added that jar file back to the classpath and then everything was fine.