OOSTest.java

OOSTest.java

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class OOSTest {

    public static void main(String[] args) throws Exception {
        try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
             ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream)) {
            List<Integer> list = new ArrayList<>(Arrays.asList(1, 2, 3, 4));
            objectOutputStream.writeObject(list);
            try (ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
                 ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream)) {
                System.out.println(String.valueOf(objectInputStream.readObject()));
            }
        }
    }
}