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/ActionContributionItem.java
* 
     * @param action
     *            the action
     */
    public ActionContributionItem(IAction action) {
        super(action.getId());
        this.action = action;
    }
    /**
     * Handles a property change event on the action (forwarded by nested listener).
     */
    private void actionPropertyChange(final PropertyChangeEvent e) {
        
        if (isVisible() && widget != null) {
            Display display = widget.getDisplay();
            if (display.getThread() == Thread.currentThread()) {
                update(e.getProperty());
            } else {
                display.asyncExec(new Runnable() {
                    public void run() {
                        update(e.getProperty());
                    }
                });
            }
        }
    }
    /**
     * Compares this action contribution item with another object.
     * Two action contribution items are equal if they refer to the identical Action.
     */