Java:选择性地将多个数组读写到单个文件

File file = new File("path/to/file.txt");

import java.io.*;

public class FileReadWriteExample {
    public static void main(String[] args) {
        // 创建文件对象
        File file = new File("path/to/file.txt");

        try {
            // 写入数据到文件
            FileOutputStream fos = new FileOutputStream(file);
            DataOutputStream dos = new DataOutputStream(fos);

            int[] array1 = {1, 2, 3};
            int[] array2 = {4, 5, 6};

            // 写入第一个数组
            for (int i = 0; i < array1.length; i++) {
                dos.writeInt(array1[i]);
            }

            // 写入第二个数组
            for (int i = 0; i < array2.length; i++) {
                dos.writeInt(array2[i]);
            }

            dos.close();

            // 读取数据从文件
            FileInputStream fis = new FileInputStream(file);
            DataInputStream dis = new DataInputStream(fis);

            // 读取第一个数组
            int[] readArray1 = new int[array1.length];
            for (int i = 0; i < readArray1.length; i++) {
                readArray1[i] = dis.readInt();
            }

            // 读取第二个数组
            int[] readArray2 = new int[array2.length];
            for (int i = 0; i < readArray2.length; i++) {
                readArray2[i] = dis.readInt();
            }

            dis.close();

            // 打印读取的数组
            System.out.println("读取的第一个数组：");
            for (int i = 0; i < readArray1.length; i++) {
                System.out.println(readArray1[i]);
            }

            System.out.println("读取的第二个数组：");
            for (int i = 0; i < readArray2.length; i++) {
                System.out.println(readArray2[i]);
            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}