Writing objects to file with ObjectOutputStream : ObjectOutputStream « File « Java Tutorial

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Java Tutorial » File » ObjectOutputStream 
11. 23. 2. Writing objects to file with ObjectOutputStream
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

class Person implements Serializable {

  private String firstName;

  private String lastName;

  private int age;

  public Person() {
  }

  public String getFirstName() {
    return firstName;
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;
  }

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }

  public int getAge() {
    return age;
  }

  public void setAge(int age) {
    this.age = age;
  }

  public String toString() {
    StringBuffer buffer = new StringBuffer();
    buffer.append(firstName);
    buffer.append("\n");
    buffer.append(lastName);
    buffer.append("\n");
    buffer.append(age);
    buffer.append("\n");

    return buffer.toString();
  }
}

public class Main {
  public static void main(String[] argsthrows Exception {
    ObjectOutputStream outputStream = null;

    outputStream = new ObjectOutputStream(new FileOutputStream("yourFile.dat"));

    Person person = new Person();
    person.setFirstName("A");
    person.setLastName("B");
    person.setAge(38);
    outputStream.writeObject(person);

    person = new Person();
    person.setFirstName("C");
    person.setLastName("D");
    person.setAge(22);
    outputStream.writeObject(person);
  }
}
11. 23. ObjectOutputStream
11. 23. 1. Create ObjectOutputStream out of FileOutputStream
11. 23. 2. Writing objects to file with ObjectOutputStream
11. 23. 3. Serializing an Object (JButton)
11. 23. 4. Reading Basic Data From an Object Stream
11. 23. 5. Create a serialized output file.
11. 23. 6. Try to recover a serialized file without the class of object that's stored in that file
11. 23. 7. Object IO
11. 23. 8. illustrates serialization and deserialization
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