java小学生四则混合运算

好的，我可以给你一个生成随机四则混合运算的Java程序，你可以在控制台上进行输入和输出。以下是代码示例：

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

public class MathQuiz {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Random random = new Random();

        int num1, num2, operator, answer, userAnswer, count = 0;

        while (count < 10) {
            num1 = random.nextInt(101);
            num2 = random.nextInt(101);
            operator = random.nextInt(4);

            switch (operator) {
                case 0:
                    answer = num1 + num2;
                    System.out.print(num1 + " + " + num2 + " = ");
                    break;
                case 1:
                    answer = num1 - num2;
                    System.out.print(num1 + " - " + num2 + " = ");
                    break;
                case 2:
                    answer = num1 * num2;
                    System.out.print(num1 + " * " + num2 + " = ");
                    break;
                case 3:
                    answer = num1 / num2;
                    System.out.print(num1 + " / " + num2 + " = ");
                    break;
                default:
                    answer = 0;
                    break;
            }

            userAnswer = input.nextInt();

            if (userAnswer == answer) {
                System.out.println("Correct!");
            } else {
                System.out.println("Wrong. The answer should be " + answer);
            }

            count++;
        }
    }
}

这个程序会随机生成10个四则混合运算题目，每次用户输入答案后会给予正确或错误的反馈。你可以根据需要修改程序，比如增加题目数量或者修改题目的难度等。