字符串循环Java

将输入提供给Writenbooks后，它将跳过为authorDemographics输入的选项，并继续执行下一个提示。此时，无论我输入了什么，它都会不断提示我“输入1表示是，输入2表示否”。期待任何反馈。谢谢

    /* body */
    System.out.println  ("Hello, welcome to the convention!");
    System.out.println  ("Please enter your full name: ");
    authorName = input.nextLine ();
    System.out.flush();
    System.out.println  ("Please enter the amount of books you have written: ");
    writtenBooks = input.nextInt ();
    System.out.println  ("Who is your target demographic for your books?");
    System.out.println  ("Type: Under 3 , 3 through 7 , 8 through 10 , 11 through 13 , or 14 and older.");
    authorDemographics = input.nextLine ();
    System.out.flush();      

    /* loop */

    demoLoop = 0;
    while (!ageGroup [4].equals(authorDemographics) && demoLoop == 0) {
        System.out.println  ("Would you like to enter more demographics?");
        System.out.println  ("Type 1 for Yes. Type 2 for No.");
        question = input.nextInt (); }


        if (question == 1) {
            System.out.println  ("Who is your target demographic for your books?");
            System.out.println  ("Type: Under 3, 3 through 7, 8 through 10, 11 through 13, or 14 and older.");
            authorDemographics01 = input.nextLine ();
            System.out.flush();
    } else {
        demoLoop = 1;    
        System.out.println  ("Author Name:" + authorName);
        System.out.println  ("First Demographic: " + authorDemographics);
        System.out.println  ("Second Demographic: " + authorDemographics01);
        System.out.println  ("Amount of books written: " + writtenBooks);

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看看while循环的括号。您永远不会更改退出条件的任何操作数的值，因此如果第一次为真，它将自然无限循环。

我认为您的缩进和括号混淆了

例如，让我们只看一下while循环

while (!ageGroup [4].equals(authorDemographics) && demoLoop == 0) {
        System.out.println  ("Would you like to enter more demographics?");
        System.out.println  ("Type 1 for Yes. Type 2 for No.");
        question = input.nextInt (); }

您永远不会更改

ageGroup[4]

或

demoloop

，因此一旦循环结束，它将再次检查条件，并且条件将始终为真。（运动中的回路保持运动状态，除非对其采取行动）

---

您的if看起来也缩进了。这并不意味着它在你的循环中。循环结束时，匹配的括号与缩进无关。是否希望if和else在循环中？

是否尝试在调试器中单步执行代码？你到底有什么问题？顺便说一句，您不需要调用System.out.flush（）；在我看来，问题是

question=input.nextInt（）；}之后的右括号我不希望它跳过任何内容，我希望循环正确退出。我还没有调试它，但即使我调试了，我也不知道该怎么做。我对编码还是新手。/*声明*/int参与者=0；字符串[]年龄组；年龄组=新字符串[5]；年龄组[0]=“3岁以下”；年龄组[1]=“3至7”；年龄组[2]=“8至10”；年龄组[3]=“11至13”；年龄组[4]=“14岁及以上”；字符串authorName=“”；int-num；国际书写书籍；int num1；字符串authorDemographics=null；字符串authorDemographics01=null；整数问题=0；int-demoLoop；我的蜘蛛感知是说，
nextLine
不读入新行，这意味着新行随后被输入到
nextLine
，并且这一过程被重复了一遍又一遍。