KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS has the following syntax.
public static final int BACKWARD_TRAVERSAL_KEYS
In the following code shows how to use KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS field.
import java.awt.AWTKeyStroke; import java.awt.KeyboardFocusManager; import java.util.HashSet; import java.util.Set; //from w ww . j a v a 2 s . c om import javax.swing.KeyStroke; public class Main { public static void main(String[] argv) throws Exception { Set<AWTKeyStroke> set = new HashSet<AWTKeyStroke>(KeyboardFocusManager .getCurrentKeyboardFocusManager().getDefaultFocusTraversalKeys( KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS)); set.add(KeyStroke.getKeyStroke("F3")); KeyboardFocusManager.getCurrentKeyboardFocusManager().setDefaultFocusTraversalKeys( KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, set); } }