defaultWriteObject method in serialization of java is used to read transient variable also if we use it with readObject method

Question

 private void writeObject(ObjectOutputStream o)
        throws IOException {  
        o.writeObject(propertyTwo);

        o.defaultWriteObject();  
  }

        private void readObject(ObjectInputStream o)
        throws IOException, ClassNotFoundException {

        propertyTwo = (String) o.readObject();
        o.defaultReadObject();
  }

Please explain how it serialize transient variable if we use defaultWriteObject and writeObject together?

You cant serialize transient variables. Please read [this post](https://stackoverflow.com/questions/20700530/why-use-the-transient-keyword-in-java) and accociated links — Laxman, Jul 05 '17 at 08:02

user207421 · Answer 1 · 2017-07-05T10:08:53.353

0

It serializes it because you serialized it. Nothing to do with defaultWriteObject() or defaultReadObject() whatsoever. They won't serialize transient members. But you did.

edited Jul 05 '17 at 10:08

answered Jul 05 '17 at 09:24

user207421

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But as we know f any variable is marked transient ,then that can not be serialized. – ritu tiwari Jul 05 '17 at 09:48
*Is* not serialized *by default,* unless you serialise it yourself, which is exactly what you have done. 'Cannot be serialized' is not correct. – user207421 Jul 05 '17 at 09:58
Thanks,got it now. – ritu tiwari Jul 05 '17 at 10:06

defaultWriteObject method in serialization of java is used to read transient variable also if we use it with readObject method

1 Answers1