Bug 161848 [JFace] Javadoc quality in org.eclipse.jface
As Tod announced on the platform-ui mailing list he wants to set the compiler settings to stricter mode so to ensure the javadoc quality. Because the weather was so lousy in Austria today I tried it and took the effort (~2 hours). I'll attach the patches package wise. This is a starting point.
bundles/org.eclipse.jface/src/org/eclipse/jface/action/SubStatusLineManager.java
IStatusLineManager {
    /**
     * Current status line message.
     */
    private String message;
    /**
     * Current status line error message.
     */
    private String errorMessage;
    /**
     * Current status line message image.
     */
    private Image messageImage;
    /**
     * Current status line error image
     */
    private Image errorImage;
    /**
     * Constructs a new manager.
     *
     * @param mgr the parent manager.  All contributions made to the 
     *      <code>SubStatusLineManager</code> are forwarded and appear in the
     *      parent manager.
     */
    public SubStatusLineManager(IStatusLineManager mgr) {
        super(mgr);
    }
    /**
     * Returns the parent status line manager that this sub-manager contributes
     * to.