java 编写一个四则运算测试程序，随机产生10道四则运算题目，并将题目在屏幕上显示，等待用户回答，统计得分，并输出最后得分，例如：“您做了10道题，其中正确X道，错误X道，最后得分：XX”。

下面是一个简单的Java代码实现：

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

public class ArithmeticQuiz {
    public static void main(String[] args) {
        Random random = new Random();
        Scanner scanner = new Scanner(System.in);
        int correctCount = 0; // 记录正确答案的数量
        int totalCount = 10; // 题目总数

        for (int i = 1; i <= totalCount; i++) {
            int num1 = random.nextInt(100);
            int num2 = random.nextInt(100);
            int operator = random.nextInt(4); // 0: +, 1: -, 2: *, 3: /

            System.out.print("(" + i + ") ");
            switch (operator) {
                case 0:
                    System.out.print(num1 + " + " + num2 + " = ");
                    if (scanner.nextInt() == (num1 + num2)) {
                        correctCount++;
                    }
                    break;
                case 1:
                    System.out.print(num1 + " - " + num2 + " = ");
                    if (scanner.nextInt() == (num1 - num2)) {
                        correctCount++;
                    }
                    break;
                case 2:
                    System.out.print(num1 + " * " + num2 + " = ");
                    if (scanner.nextInt() == (num1 * num2)) {
                        correctCount++;
                    }
                    break;
                case 3:
                    System.out.print(num1 + " / " + num2 + " = ");
                    if (scanner.nextInt() == (num1 / num2)) {
                        correctCount++;
                    }
                    break;
            }
        }

        scanner.close();

        int wrongCount = totalCount - correctCount; // 计算错误答案的数量
        int score = correctCount * 10; // 计算得分

        System.out.println("您做了" + totalCount + "道题，其中正确" + correctCount + "道，错误" + wrongCount + "道，最后得分：" + score);
    }
}

该程序使用了Java内置的Random类来随机生成数字和运算符，使用了Scanner类来读取用户输入。在程序执行时，会依次产生10道四则运算题目，用户输入答案后会统计正确和错误的数量，最终计算得分并输出。