What are the condiions in which JVM throw notserializableexception?

Question

Can any on explain me in which condition JVM throw notserializableexception.

exmaple

class Emp implemenst Serializable
{
   Address address = new Address();
}

class Address 
{
   Strign address;
}

in above case does JVM will throw the exception because address class is not serializable?

can anybody explain?

http://stackoverflow.com/questions/13895867/java-io-notserializableexception — Hosseini, Jun 24 '16 at 07:53

score 1 · Answer 1 · answered Jun 24 '16 at 07:47

1

The problem is that Address doesn't implement Serializable, so you have to implement it or mark address inside of Emp as transient, which basically means ignore the member from serialization.

Read here: https://en.wikibooks.org/wiki/Java_Programming/Keywords/transient

--> Java will throw the exception if a member doesn't implement Serializable or isn't transient.

answered Jun 24 '16 at 07:47

huellif

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But at the same time when employee extends the address class then it do not throw the exception .. why ?( I know it is not real example) – Gaurav vijayvargiya Jun 24 '16 at 16:40

Mateusz Stefaniak · Answer 2 · 2016-06-24T07:58:11.323

1

If you want to serialize an object in Java, each field in that object (and its fields, etc..) must implement Serializable interface. We could say that each object is serialized separately.

Thats why Java throws this exception in your case - one of the fieds is not Serializable.

edited Jun 24 '16 at 07:58

answered Jun 24 '16 at 07:49

Mateusz Stefaniak

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What are the condiions in which JVM throw notserializableexception?

2 Answers2