Bug 101261 [type hierarchy] overriding a method from context menu > Source is not 5.0 aware
N20050622-0010 There's a hidden feature in the type hierarchy, that allows you to select a type XY and an inherited method, open the context menu and select Source > Override in 'XY'. This action has not been updated for 5.0 and creates a wrong method stub when generics are involved, e.g. here: public class Top<E> { public void method(E e) { } } class XY<ELEMENT> extends Top<ELEMENT> { } It creates (wrong formatting, 'E' instead of 'ELEMENT'): public void method(E e) { // TODO Auto-generated method stub super.method(e); } I'd suggest to drop this action, since the Override/Implement Methods... dialog and content assist do better jobs.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
else 
						setOrientation(VIEW_ORIENTATION_VERTICAL);
				}
			}
		} finally {
			fInComputeOrientation= false;
		}
	}
	/**
	 * called from ToggleOrientationAction.
	 * @param orientation VIEW_ORIENTATION_SINGLE, VIEW_ORIENTATION_HORIZONTAL or VIEW_ORIENTATION_VERTICAL
	 */	
	public void setOrientation(int orientation) {
		if (fCurrentOrientation != orientation) {
			boolean methodViewerNeedsUpdate= false;
			
			if (fMethodViewerViewForm != null && !fMethodViewerViewForm.isDisposed()
					&& fTypeMethodsSplitter != null && !fTypeMethodsSplitter.isDisposed()) {
				if (orientation == VIEW_ORIENTATION_SINGLE) {
					fMethodViewerViewForm.setVisible(false);
					enableMemberFilter(false);
					updateMethodViewer(null);
				} else {
					if (fCurrentOrientation == VIEW_ORIENTATION_SINGLE) {
						fMethodViewerViewForm.setVisible(true);
						methodViewerNeedsUpdate= true;
					}
					boolean horizontal= orientation == VIEW_ORIENTATION_HORIZONTAL;
					fTypeMethodsSplitter.setOrientation(horizontal ? SWT.HORIZONTAL : SWT.VERTICAL);
				}