IBM JVM版本7中未知锁的所有者(Owner of lock unknown in IBM JVM version 7)

 我认为你应该用这个循环替换你建议的（但不正确的）代码行： 
 
    if (i != numberOfGuesses) {
      System.out.println("You did not use these guesses: ");
      for (int j = i + 1; j <= numberOfGuesses; j++) {
        System.out.println(j);
      }
    }
 
 此外，您还有一个错误：如果您在开始时回答“是”，则一切正常，您可以玩游戏。 但是，如果您回答是（如问题中提出的）或任何其他文本，它会等待另一个输入，并且当您输入内容并按下回车键时，它会继续游戏。 所以，如果输入“否”，按回车，输入1，按回车键仍然会播放。 

I think that you should replace your proposed (but incorrect) line of code with this loop:
 
    if (i != numberOfGuesses) {
      System.out.println("You did not use these guesses: ");
      for (int j = i + 1; j <= numberOfGuesses; j++) {
        System.out.println(j);
      }
    }
 
Also, you have a bug: if you answer yes in the beginning, everything's fine and you play the game. But if you answer Yes (as proposed in the question) or any other text, it waits for another input and when you do input something and press enter, it continues to the game. So, if you enter "No", press enter, enter 1, press enter it will still play.