code: private static final KeyAdapter closeKeyStrokes(final java.awt.Window window) {
          return new KeyAdapter() {
              public void keyReleased(KeyEvent e) {
                  final int kc = e.getKeyCode();
                  if (kc == KeyEvent.VK_ESCAPE ||
                      kc == KeyEvent.VK_ENTER) {
                      window.dispose();
                  }
              }
          };
      }
docs: Listens to key to close a |window|.