哪些类型的循环适合在Java程序中重新输入答案？

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        boolean validInput = false;

        while (!validInput) {
            System.out.print("请输入答案：");
            String answer = scanner.nextLine();

            // 根据具体条件判断输入是否有效，这里以长度是否大于0为例
            if (answer.length() > 0) {
                validInput = true;
            } else {
                System.out.println("答案无效，请重新输入！");
            }
        }
    }
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        boolean validInput = false;

        do {
            System.out.print("请输入答案：");
            String answer = scanner.nextLine();

            // 根据具体条件判断输入是否有效，这里以长度是否大于0为例
            if (answer.length() > 0) {
                validInput = true;
            } else {
                System.out.println("答案无效，请重新输入！");
            }
        } while (!validInput);
    }
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        for (int i = 0; i < 3; i++) {
            System.out.print("请输入答案：");
            String answer = scanner.nextLine();

            // 根据具体条件判断输入是否有效，这里以长度是否大于0为例
            if (answer.length() > 0) {
                break; // 输入有效，跳出循环
            } else {
                System.out.println("答案无效，请重新输入！");
            }
        }
    }
}