Bug 17618 Changing output location should delete all derived resources
F1 1) create a project (autobuild on) 2) import Java sources and resources 3) change output folder to project/bin ->all class files are removed (fine) 4) change output folder back to be the project -> all class files are removed (fine) 5) open project/bin -> all resources are still there Note: When opening the properties dialog on such a resource it is tagged as "Derived". Thus, it should be possible to remove all derived resources as long as they have been created by the Java builder.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/BuildPathsBlock.java
if (reorgQuery != null) {
			IPath oldOutputLocation= fCurrJProject.getOutputLocation();
			if (!outputLocation.equals(oldOutputLocation)) {
				IResource res= fWorkspaceRoot.findMember(oldOutputLocation);
				if (res instanceof IContainer && hasClassfiles(res)) {
					if (reorgQuery.doQuery(oldOutputLocation)) {
						removeOldClassfiles(res);
					}
				}
			}		
		}
		
		
		if (!fWorkspaceRoot.exists(outputLocation)) {
			IFolder folder= fWorkspaceRoot.getFolder(outputLocation);
			CoreUtility.createFolder(folder, true, true, null);			
		}
		
		monitor.worked(2);
				
		int nEntries= classPathEntries.size();
		IClasspathEntry[] classpath= new IClasspathEntry[nEntries];
		
		
		
		for (int i= 0; i < nEntries; i++) {
			CPListElement entry= ((CPListElement)classPathEntries.get(i));
			IResource res= entry.getResource();
			if ((res instanceof IFolder) && !res.exists()) {