java - 如何摆脱这个 while 循环

Question

我编写了以下方法，该 boolean 返回类型再次分配给我调用此方法的另一个方法中的另一个 boolean 值。

    private boolean answer() {

    Scanner input = new Scanner(System.in);
    boolean b = false;
    String answer = input.nextLine();

    while(answer != "y" || answer != "n") {
        System.out.println("Answer with y (yes) or n (no)");
        answer = input.nextLine();
    }
    if (answer == "y") {
        b = true;
    }
    return b;

}

但是无论我输入什么(y、n 或任何其他字母)，我总是会再次陷入 while 循环。

Answer 1

这是因为您的测试中使用的是 or 而不是 and。

按照当前的编码，您所说的是:

while the answer isn't "y" or it isn't "n", loop.

情况永远如此。

你想要的是:

while the answer isn't "y" and it isn't "n", loop.

编码为:

while (answer != "y" && answer != "n") (