для чего переопределяется в верном решении метод close?
package com.javarush.task.task20.task2022;
import java.io.*;
/*
Переопределение сериализации в потоке
*/
public class Solution implements Serializable, AutoCloseable {
private FileOutputStream stream;
public Solution(String fileName) throws FileNotFoundException {
this.stream = new FileOutputStream(fileName);
}
public void writeObject(String string) throws IOException {
stream.write(string.getBytes());
stream.write("\n".getBytes());
stream.flush();
}
private void writeObject(ObjectOutputStream out) throws IOException {
out.defaultWriteObject();
out.close();
}
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
in.defaultReadObject();
in.close();
}
@Override
public void close() throws Exception {
System.out.println("Closing everything!");
stream.close();
}
public static void main(String[] args) {
}