Javaを使用して簡単な電卓アプリケーションを開発する方法

import java.util.Scanner;
import java.lang.Math;

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

        while (!exit) {
            System.out.print("请输入第一个数字：");
            double num1 = scanner.nextDouble();

            System.out.print("请输入操作符(+, -, *, /)：");
            String operator = scanner.next();

            System.out.print("请输入第二个数字：");
            double num2 = scanner.nextDouble();

            double result = 0.0;

            switch (operator) {
                case "+":
                    result = num1 + num2;
                    break;
                case "-":
                    result = num1 - num2;
                    break;
                case "*":
                    result = num1 * num2;
                    break;
                case "/":
                    result = num1 / num2;
                    break;
                default:
                    System.out.println("输入错误，请重新输入。");
                    continue;
            }

            System.out.println("结果：" + result);

            System.out.print("是否继续计算？(Y/N)：");
            String choice = scanner.next();

            if (choice.equalsIgnoreCase("N")) {
                exit = true;
            }
        }

        scanner.close();
    }
}