protected void focusNext(JComponent comp) {
   FocusTraversalPolicy policy = FlatWelcomeFrame.this.getFocusTraversalPolicy();
   if (policy != null) {
     Component next = policy.getComponentAfter(FlatWelcomeFrame.this, comp);
     if (next != null) {
       next.requestFocus();
     }
   }
 }
 protected void focusPrev(JComponent comp) {
   FocusTraversalPolicy policy = FlatWelcomeFrame.this.getFocusTraversalPolicy();
   if (policy != null) {
     Component prev = policy.getComponentBefore(FlatWelcomeFrame.this, comp);
     if (prev != null) {
       prev.requestFocus();
     }
   }
 }