Java:无法让.equals()工作

你是一个比较String(answer1)到Integer(correctAnswer).那是比较苹果和橘子,它们永远不会相同.

您需要转换String为int:

Integer.parseInt(answer1)

如果answer1无法解析为整数,则可能会失败; 或转换int为String:

Integer.toString(correctAnswer)

然后比较它们:

Integer.parseInt(answer1) == correctAnswer  // You can use == because int is primitive.
  or
answer1.equals(Integer.toString(correctAnswer))