I have a strange problem in Eclipse Helios. When I alter my source code, my changes have no effect. Even if I alter the code in a way that looks uncompilable, it still can b
This most probably occurs when the meta data related to the workspace is corrupted. Simple solution would be to create an entirely new folder as workspace and import the project into this new workspace.
This is after you have tried all the clean build, rebuild etc.. :)