Bug 96048 Using the "Remove" button to remove source code file in the Java Build Path/Libraries does not remove path
Eclipse 3.1M7 Java 1.5.0_02 In the Java Build Path/Libraries tab, if a source code file has been attached to a library, then using the "Remove" button will not remove the path. Instead one needs to use "Edit" to clear the field. Steps to reproduce: 1. Attach src.jar to the rt.jar 2. Select "Source code attachment:" line 3. Click "Remove" (UI shows that there is no attachment) 4. Click "OK" to accept 5. Reopen Java Build Path/Libraries 6. Discover that src.jar is still attached to rt.jar
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
Object parentContainer= selElement.getParentContainer();
			if (parentContainer instanceof CPListElement) { 
				IClasspathEntry updatedEntry= selElement.getClasspathEntry();
				updateContainerEntry(updatedEntry, fCurrJProject, ((CPListElement) parentContainer).getPath());
			}
		}
	}
	private void updateContainerEntry(final IClasspathEntry newEntry, final IJavaProject jproject, final IPath containerPath) {
		try {
			IWorkspaceRunnable runnable= new IWorkspaceRunnable() {
				public void run(IProgressMonitor monitor) throws CoreException {				
					BuildPathSupport.modifyClasspathEntry(null, newEntry, jproject, containerPath, monitor);
				}
			};
			PlatformUI.getWorkbench().getProgressService().run(true, true, new WorkbenchRunnableAdapter(runnable));
		} catch (InvocationTargetException e) {
			String title= NewWizardMessages.LibrariesWorkbookPage_configurecontainer_error_title; 
			String message= NewWizardMessages.LibrariesWorkbookPage_configurecontainer_error_message; 
			ExceptionHandler.handle(e, getShell(), title, message);
		} catch (InterruptedException e) {
			 
		}
	}
		
	private void editElementEntry(CPListElement elem) {
		CPListElement[] res= null;
		
		switch (elem.getEntryKind()) {
		case IClasspathEntry.CPE_CONTAINER:
			res= openContainerSelectionDialog(elem);