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”。

好的，我可以回答这个问题。以下是一个Java编写的四则运算测试程序的示例代码：

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

public class ArithmeticTest {
    public static void main(String[] args) {
        int numQuestions = 10;
        int numCorrect = 0;
        int numWrong = 0;
        Random rand = new Random();
        Scanner scanner = new Scanner(System.in);
        
        for (int i = 1; i <= numQuestions; i++) {
            int num1 = rand.nextInt(100);
            int num2 = rand.nextInt(100);
            int operator = rand.nextInt(4);
            char opChar;
            int answer, userAnswer;
            
            switch (operator) {
                case 0:
                    opChar = '+';
                    answer = num1 + num2;
                    break;
                case 1:
                    opChar = '-';
                    answer = num1 - num2;
                    break;
                case 2:
                    opChar = '*';
                    answer = num1 * num2;
                    break;
                case 3:
                    opChar = '/';
                    answer = num1 / num2;
                    break;
                default:
                    opChar = '?';
                    answer = 0;
                    break;
            }
            
            System.out.print("Question " + i + ": " + num1 + " " + opChar + " " + num2 + " = ");
            userAnswer = scanner.nextInt();
            
            if (userAnswer == answer) {
                System.out.println("Correct!");
                numCorrect++;
            } else {
                System.out.println("Wrong! The correct answer is " + answer);
                numWrong++;
            }
        }
        
        System.out.println("You answered " + numCorrect + " questions correctly and " + numWrong + " questions incorrectly.");
        System.out.println("Your final score is " + (numCorrect * 10) + ".");
    }
}

这个程序会随机产生10道四则运算题目，并将题目在屏幕上显示，等待用户回答。用户回答后，程序会判断答案是否正确，并统计得分。最后，程序会输出用户的得分。