java小学算术运算测试程序

以下是一个Java小学算术运算测试程序的示例：

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;

public class ArithmeticTestProgram extends Frame implements ActionListener {
    private Label label1, label2, label3, label4, label5, label6, label7, label8, label9, label10;
    private TextField textField;
    private Button button;
    private ArrayList<String> questions;
    private ArrayList<String> answers;

    public ArithmeticTestProgram() {
        setTitle("小学生四则运算测试系统-郑州轻工业大学-***-开发,****..");//设置标题
        setLayout(new GridLayout(12, 1));

        label1 = new Label("小学生四则运算测试系统");
        label2 = new Label("请输入题目数量：");
        textField = new TextField();
        button = new Button("开始测试");
        button.addActionListener(this);

        add(label1);
        add(label2);
        add(textField);
        add(button);

        setSize(400, 300);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == button) {
            int num = Integer.parseInt(textField.getText());
            generateQuestions(num);
            saveQuestionsToFile();
        }
    }

    private void generateQuestions(int num) {
        questions = new ArrayList<>();
        answers = new ArrayList<>();

        for (int i = 0; i < num; i++) {
            int operand1 = (int) (Math.random() * 100);
            int operand2 = (int) (Math.random() * 100);
            int operator = (int) (Math.random() * 4);

            String question = "";
            String answer = "";

            switch (operator) {
                case 0:
                    question = operand1 + " + " + operand2 + " = ";
                    answer = String.valueOf(operand1 + operand2);
                    break;
                case 1:
                    question = operand1 + " - " + operand2 + " = ";
                    answer = String.valueOf(operand1 - operand2);
                    break;
                case 2:
                    question = operand1 + " * " + operand2 + " = ";
                    answer = String.valueOf(operand1 * operand2);
                    break;
                case 3:
                    question = operand1 + " / " + operand2 + " = ";
                    answer = String.valueOf(operand1 / operand2);
                    break;
            }

            questions.add(question);
            answers.add(answer);
        }
    }

    private void saveQuestionsToFile() {
        File file = new File("questions.txt");

        try {
            FileOutputStream fos = new FileOutputStream(file);
            BufferedOutputStream bos = new BufferedOutputStream(fos);

            for (int i = 0; i < questions.size(); i++) {
                String question = questions.get(i);
                String answer = answers.get(i);

                String line = question + answer + "\n";
                bos.write(line.getBytes());
            }

            bos.close();
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        ArithmeticTestProgram program = new ArithmeticTestProgram();
    }
}