java - 我怎样才能让我的 do while 循环按照我想要的方式工作？

Question

如果用户对“继续？:(y/n)”提示回答"is"，我会尝试让我的代码循环提示输入矩形长度和宽度。

当前正在循环“继续？:(y/n)”部分，而不是“输入长度:”和“输入宽度:” 部分。 如有任何帮助，我们将不胜感激!

import java.util.Scanner;

public class Day1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.println("Welcome to Grand Circus' Room Detail Generator!");

        double length = 0.0;
        double width = 0.0;
        double area = 0.0;
        double perimeter = 0.0;

        System.out.println("Enter Length: ");
        length = scanner.nextInt();

        System.out.println("Enter Width: ");
        width = scanner.nextInt();

        area = length * width;
        perimeter = 2 * (length + width);

        System.out.println("Area: " + area);
        System.out.println("Perimeter: " + perimeter);

        Scanner sc = new Scanner(System.in);
        String response;

        do {
            System.out.print("Continue? (y/n):");
            response = sc.next();
        } while (response.equals("y") || response.equals("Y"));
    }
}

Answer 1

放置

Scanner sc = new Scanner(System.in);
String response;
do {

之前

System.out.println("Enter Length: ");

为什么循环体之外的内容(do { 和 } while (...) 之间的内容)会重复？