Java by API/javax.swing/SortingFocusTraversalPolicy

new SortingFocusTraversalPolicy(Comparator com)

   <source lang="java">

import java.awt.ruponent; import java.awt.Container; import java.awt.FocusTraversalPolicy; import java.awt.GridLayout; import java.util.Arrays; import java.util.ruparator; import java.util.List; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.SortingFocusTraversalPolicy; public class MainClass {

 public static void main(String args[]) {
   JFrame frame = new JFrame("Reverse Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setLayout(new GridLayout(3, 3));
   for (int i = 9; i > 0; i--) {
     JButton button = new JButton(Integer.toString(i));
     frame.add(button, 0);
   }
   final Container contentPane = frame.getContentPane();
   Comparator<Component> comp = new Comparator<Component>() {
     public int compare(Component c1, Component c2) {
       Component comps[] = contentPane.getComponents();
       List list = Arrays.asList(comps);
       int first = list.indexOf(c1);
       int second = list.indexOf(c2);
       return second - first;
     }
   };
   FocusTraversalPolicy policy = new SortingFocusTraversalPolicy(comp);
   frame.setFocusTraversalPolicy(policy);
   frame.setSize(300, 200);
   frame.setVisible(true);
 }

}

      </source>