如何将ArrayList of objects(ArrayLists)转换为字节数组？

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.ArrayList;

public class ArrayListToByteArray {
    public static byte[] convert(ArrayList<Object> arrayList) throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
        objectOutputStream.writeObject(arrayList);
        objectOutputStream.flush();
        objectOutputStream.close();
        return byteArrayOutputStream.toByteArray();
    }

    public static void main(String[] args) {
        ArrayList<Object> arrayList = new ArrayList<>();
        // 添加对象到ArrayList中

        try {
            byte[] byteArray = convert(arrayList);
            // 使用得到的字节数组进行后续操作
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}