从键盘上输入10个整数，写入到一个文件number.txt中，然后从此文件读出数据，显示在屏幕上。

import java.io.*;
public class Test_8_1 {
    public static void main(String[] args) {
        int[] numbers = new int[10];
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            System.out.println("请输入10个整数：");
            for (int i = 0; i < 10; i++) {
                String input = reader.readLine();
                numbers[i] = Integer.parseInt(input);
            }
            reader.close();
            FileWriter writer = new FileWriter("src/allTest/Test_8_1File");
            for (int i = 0; i < 10; i++) {
                writer.write(numbers[i] + " ");
            }
            writer.close();
            BufferedReader fileReader = new BufferedReader(new FileReader("src/allTest/Test_8_1File"));
            System.out.println("从文件中读取的数据：");
            String line;
            while ((line = fileReader.readLine()) != null) {
                System.out.print(line+" ");
            }
            fileReader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}