BJP4练习3.20：输入生日

Question

编写一个名为inputBirthday的方法，该方法接受控制台的Scanner作为参数，并提示用户输入出生的月份、日期和年份，然后以合适的格式打印出生日期。这是与用户的示例对话：

我需要像这样接受这个输入-

你是在一个月的哪一天出生的？8＜br＞你出生的月份叫什么？阿美：
你是哪一年出生的？1981

输出应该是这样的-

你出生于1981年5月8日。你真老了！

public static void main(String[] args) {

    inputBirthday();
}


  public static void inputBirthday() {
      Scanner abc = new Scanner(System.in);
      System.out.println("On what day of the month were you born? ");
      int inputDay = abc.nextInt();
      System.out.println("What is the name of the month in which you were born? ");
      String inputMonth = abc.next();
      System.out.println("During what year were you born? ");
      int inputYear = abc.nextInt();
      System.out.println("You were born on " + inputMonth + " " + inputDay + "," + " " + inputYear + "." + " You're mighty old!");
}

Answer 1

public static void inputBirthday(Scanner input) {
     Scanner start = new Scanner(System.in);
    System.out.print("On what day of the month were you born? ");
    int day = input.nextInt();
    System.out.print("What is the name of the month in which you were born? ");
    String month = input.next();
    System.out.print("During what year were you born? ");
    int year = input.nextInt();
     System.out.println("You were born on " + month + " " + day + "," + " " + year + "." + " You're mighty old!");
}

Answer 2

public static void main(String[] args) {

    Scanner in = new Scanner(System.in);
    // either instantiate the enclosing class, or make inputBirthday static
    inputBirthday(in);
    }

  public static void inputBirthday(Scanner abc)
 {
    System.out.print("On what day of the month were you born? ");
    int inputDay = abc.nextInt();
    System.out.print("What is the name of the month in which you were born? ");
    String inputMonth = abc.next();
    System.out.print("During what year were you born? ");
    int inputYear = abc.nextInt();
    System.out.println("You were born on " + inputMonth + " " + inputDay + "," + " " + inputYear + "." + " You're mighty old!");
    }

最后，它成功了，代码通过了所有测试

测试结果

Answer 3

我认为问题在于，要求明确规定您要编写一个名为 inputBirthday 的方法，该方法接受扫描仪对象。您已经编写了一个 main 方法，然后编写了一个方法 inputBirthday，它接受 String、int、int。

将代码从main方法移动到inputBirthday方法，摆脱扫描仪实例化，修改inputBirthday方法以接受扫描仪（可能是inputBirthday（Scanner abc）。

编写的代码在intellij中工作，因为它是一个完整的程序。但是对于站点，他们期望特定的方法签名。这种方法与leetcode或其他此类在线代码所期望的没有什么不同。

OP进行了编辑，但是同样，需求规定该方法应该类似于:

public void inputBirthday(Scanner abc) {
    System.out.println("On what day of the month were you born? ");
    int inputDay = abc.nextInt();
    System.out.println("What is the name of the month in which you were born? ");
    String inputMonth = abc.next();
    System.out.println("During what year were you born? ");
    int inputYear = abc.nextInt();
    System.out.println("You were born on " + inputMonth + " " + inputDay + "," + " " + inputYear + "." + " You're mighty old!");
}

所以，再一次：

• 获取与需求匹配的方法签名（不清楚它是否应该是静态的，因此可能需要是公共静态输入生日（Scanner abc））
• 不要在＜code＞inputBirth＜/code＞方法中实例化扫描仪

要从 IDE 进行测试，请执行以下操作：

public static void main(String[] args) {
  Scanner in = new Scanner(System.in);
  // either instantiate the enclosing class, or make inputBirthday static
  inputBirthday(in);
}