Event Java

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  4. KeyboardFocusManager BACKWARD_TRAVERSAL_KEYS
import java.awt.AWTKeyStroke;
import java.awt.KeyboardFocusManager;
import java.util.HashSet;
import java.util.Set;
import javax.swing.KeyStroke;
public class Main {
  public static void main(String[] argv) throws Exception {
    Set set = new HashSet(KeyboardFocusManager
        .getCurrentKeyboardFocusManager().getDefaultFocusTraversalKeys(
            KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
    set.add(KeyStroke.getKeyStroke("F3"));
    KeyboardFocusManager.getCurrentKeyboardFocusManager().setDefaultFocusTraversalKeys(
        KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, set);
  }
}