如何使按钮成为字符串变量并在if语句中使用它

Question

public static void main(String[] args) {
  JFrame frame = new JFrame("Frame");

  Object[] options = {
    "Dice roll",
    "Magic 8 ball"
  };

  int a1 = JOptionPane.showOptionDialog(frame,
    "Would you like to roll the dice " + "or use the Magic 8 ball?",
    JOptionPane.YES_NO_CANCEL_OPTION,
    JOptionPane.QUESTION_MESSAGE,
    null,
    options,
    options[1]);

  if (a1 != 0) {
    Object[] options = {
      "Dice roll", // error
      ""
    };

    int a2d = JOptionPane.showOptionDialog(frame, // error
      "do you want dice roll 1 " + "or dice roll 2?",
      JOptionPane.YES_NO_CANCEL_OPTION,
      JOptionPane.QUESTION_MESSAGE,
      null,
      options,
      options[1]);
  }
}

我想要它，以便带有按钮的窗口将是我可以使用的变量 if语句，但如果我复制代码并更改按钮，则表示“Object [] options”已被定义为变量，变量“int a2d”是错误。