How do you use ObjectInputStream/ObjectOutputStream with a simple code example?

The ObjectInputStream and ObjectOutputStream classes in Java are used to serialize and deserialize objects. Serialization is the process of converting an object into a byte stream, making it possible to save the object's state to a file or transmit it over a network. Deserialization is the reverse process of converting the byte stream back into a copy of the object.

Here's a simple example to demonstrate how to use these classes:


import java.io.*;

// Class to be serialized
class Person implements Serializable {
    String name;
    int age;

    Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    @Override
    public String toString() {
        return "Person{name='" + name + "', age=" + age + "}";
    }
}

public class Example {
    public static void main(String[] args) {
        // Serialize the object
        Person person = new Person("Alice", 30);
        try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("person.ser"))) {
            oos.writeObject(person);
        } catch (IOException e) {
            e.printStackTrace();
        }

        // Deserialize the object
        Person deserializedPerson = null;
        try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("person.ser"))) {
            deserializedPerson = (Person) ois.readObject();
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        }

        System.out.println("Deserialized Person: " + deserializedPerson);
    }
}

How do you use ObjectInputStream/ObjectOutputStream with a simple code example?

Popular Topics

Recent Languages

How do you use ObjectInputStream/ObjectOutputStream with a simple code example?

Related Questions

Popular Topics

Recent Languages