FocusTransversalPolicy

public static class MyOwnFocusTraversalPolicy extends FocusTraversalPolicy
    {
        Vector<Component> order;
 
        public MyOwnFocusTraversalPolicy(Vector<Component> order) {
            this.order = new Vector<Component>(order.size());
            this.order.addAll(order);
        }
        public Component getComponentAfter(Container focusCycleRoot, Component aComponent)
        {
            int idx = (order.indexOf(aComponent) + 1) % order.size();
            return order.get(idx);
        }
 
        public Component getComponentBefore(Container focusCycleRoot, Component aComponent)
        {
            int idx = order.indexOf(aComponent) - 1;
            if (idx < 0) {
                idx = order.size() - 1;
            }
            return order.get(idx);
        }
 
        public Component getDefaultComponent(Container focusCycleRoot) {
            return order.get(0);
        }
 
        public Component getLastComponent(Container focusCycleRoot) {
            return order.lastElement();
        }
 
        public Component getFirstComponent(Container focusCycleRoot) {
            return order.get(0);
        }
    }