Bug 93552 [5.0][hovering] Hover for binary type variable is '/'
N20050503-0010 - open java.util.ArrayList from a 5.0 rt.jar - hover over "E" in "public class ArrayList<E>" -> hover is just a '/' (slash) For source types, the hover text is the type variable name.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/JavadocHover.java
buf.append("&lt;"); 
			} else if (ch == '>') {
				buf.append("&gt;"); 
			} else {
				buf.append(ch);
			}
		}
		return buf.toString();
	}
	/**
	 * Returns the style sheet URL.
	 *
	 * @since 3.1
	 */
	protected URL getStyleSheetURL() {
		if (fStyleSheetURL == null) {
			Bundle bundle= Platform.getBundle(JavaPlugin.getPluginId());
			fStyleSheetURL= bundle.getEntry("/JavadocHoverStyleSheet.css"); 
			if (fStyleSheetURL != null) {
				try {
					fStyleSheetURL= Platform.asLocalURL(fStyleSheetURL);
				} catch (IOException ex) {
					JavaPlugin.log(ex);
				}
			}
		}
		return fStyleSheetURL;
	}
}