import java.awt.AWTKeyStroke;
import java.awt.KeyboardFocusManager;
import java.util.HashSet;
import java.util.Set;
public class Main {
public static void main(String[] argv) throws Exception {
Set set = new HashSet();
KeyboardFocusManager.getCurrentKeyboardFocusManager().setDefaultFocusTraversalKeys(
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, set);
}
}