Bug 31683 Show In doesn't work for class file in rt.jar
I20030611 - create Test project that uses Jar container - open NumberFormat.class - activate Show In... and choose Package Explorer Observe: NumberFormat.class doesn't get revealed.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
postRefresh(element);
				updateSelection(delta);
				return;
			}
		}
		
		if ((element instanceof ICompilationUnit) || (element instanceof IClassFile))
			return;
			
		
		if (element instanceof IPackageFragmentRoot && ((flags & IJavaElementDelta.F_ARCHIVE_CONTENT_CHANGED) != 0)) {
			postRefresh(element);
			return;
		}
		
		if (element instanceof IPackageFragmentRoot && (((flags & IJavaElementDelta.F_SOURCEATTACHED) != 0 || ((flags & IJavaElementDelta.F_SOURCEDETACHED)) != 0)))
			postUpdateIcon(element);
			
		if (isClassPathChange(delta)) {
			  
			postRefresh(element.getJavaProject());
			return;
		}
		
		if (processResourceDeltas(delta.getResourceDeltas(), element))
			return;
		handleAffectedChildren(delta, element);
	}
		
	private void handleAffectedChildren(IJavaElementDelta delta, IJavaElement element) throws JavaModelException {