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
IJavaElementDelta[] affectedChildren= delta.getAffectedChildren();
		if (affectedChildren.length > 1) {
			
			if (element instanceof IPackageFragment) {
				IJavaElement parent= (IJavaElement)internalGetParent(element);
				
				
				if (element.equals(fInput)) {
					postRefresh(element);
				} else {
					postRefresh(parent);
				}
				return;
			}
			
			if (element instanceof IPackageFragmentRoot)
				postRefresh(skipProjectPackageFragmentRoot((IPackageFragmentRoot)element));
			else
				postRefresh(element);
			return;
		}
		processAffectedChildren(affectedChildren);
	}
	
	protected void processAffectedChildren(IJavaElementDelta[] affectedChildren) throws JavaModelException {
		for (int i= 0; i < affectedChildren.length; i++) {
			processDelta(affectedChildren[i]);
		}
	}