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What happens if parent is not serialized and child class are serialized?

If parent is not serialized and child class are serialized .Then parent class variable will not persist or we can save the state of parent class will not persist in file .

Example

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;

class NonSerial {

public int a=0;

}

class Serial2 extends NonSerial implements Serializable{

public int a2=2;

}

class Serial1 extends Serial2 {

public int a1=1;

}

public class MyClass extends Serial1 implements Serializable{

/**

*

*/

private static final long serialVersionUID = 1L;

public static void main(String [] args) {

MyClass c = new MyClass();

try {

c.a1=1223;

c.a2=1223;

c.a=1223;

FileOutputStream fs = new FileOutputStream("d://test1.txt");

ObjectOutputStream os = new ObjectOutputStream(fs);

os.writeObject(c);

os.close();

} catch (Exception e) { e.printStackTrace(); }

try {

FileInputStream fis = new FileInputStream("d://test1.txt");

ObjectInputStream ois = new ObjectInputStream(fis);

MyClass cc = (MyClass) ois.readObject();

System.out.println("c0:"+cc.a+"\nc1:"+cc.a1+"\nc2:"+cc.a2);

ois.close();

} catch (Exception e) {

e.printStackTrace();

}

}

}

If we write and read the persist object (serialized object )then we will find the output is as following .It shows that value of a ia not persist and it again we we read its initialized value which is 0 is display as output .

Output

c0:0 c1:1223 c2:1223

 

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