public static Component focusComponentOrChild(Component c) {
        return focusComponentOrChild(c, false);
    }
Puts the focus on the first component in the tree of <code>c</code> that
can accept the focus.
@param c the component
@return the first component that can accept focus
@see #getFocusableComponentOrChild
starter/src/main/java/org/jivesoftware/openfire/launcher/GraphicUtils.java