Reading objects from file using ObjectInputStream

  

import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.io.Serializable;

public class Main {
  public static void main(String[] args) throws Exception {
    ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream("yourFile.dat"));

    Object obj = null;

    while ((obj = inputStream.readObject()) != null) {
      if (obj instanceof Person) {
        System.out.println(((Person) obj).toString());
      }
    }
    inputStream.close();
  }
}

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();
  }
}

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3.	Read different data types from ObjectInputStream
4.	Object serialization with Serializable interface, ObjectOutputStream and ObjectInputStream.
5.	ObjectInputStream, ObjectOutputStream and java.io.Serializable
6.	Store objects in file
7.	Use ObjectOutputStream and ObjectInputStream to write and read Hashtable
8.	ObjectStream Test with hierarchy

Reading objects from file using ObjectInputStream : ObjectInputStream « File Input Output « Java

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