帮我生成一个小学四则运算的Java程序

以下是一个简单的小学四则运算Java程序，可以根据需要进行修改和优化：

import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Random random = new Random();
        int a, b, result, answer, operator;
        int correctCount = 0, wrongCount = 0;
        String[] operators = {"+", "-", "*", "/"};

        while (true) {
            a = random.nextInt(100) + 1;
            b = random.nextInt(100) + 1;
            operator = random.nextInt(4);
            result = calculate(a, b, operator, operators);

            System.out.print(a + " " + operators[operator] + " " + b + " = ");
            answer = input.nextInt();

            if (answer == result) {
                System.out.println("恭喜你，答对了！");
                correctCount++;
            } else {
                System.out.println("很遗憾，答错了！");
                wrongCount++;
            }

            System.out.println("你已经做对了" + correctCount + "道题，做错了" + wrongCount + "道题。");
            System.out.println("是否继续答题？（Y/N）");
            String choice = input.next();

            if (choice.equalsIgnoreCase("N")) {
                System.out.println("谢谢参与，再见！");
                break;
            }
        }
    }

    public static int calculate(int a, int b, int operator, String[] operators) {
        int result = 0;
        switch (operator) {
            case 0:
                result = a + b;
                break;
            case 1:
                result = a - b;
                break;
            case 2:
                result = a * b;
                break;
            case 3:
                result = a / b;
                break;
        }
        return result;
    }
}

该程序会随机生成两个数和一个运算符，然后要求用户输入答案，判断是否正确，并统计做对和做错的题目数量。用户可以选择继续答题或退出程序。