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What is the need to implement Serializable interface (with
no methods) for objects which are to be serialized ?
We can write our own functionality which writes objects to
streams then why we need to implement and tell JVM that
which objects can be serialized.
- 6 Answers
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Answer / chellammal
Implementing Serializable interface signifies that the
object can be persisted. Otherwise, when you try to
use writeObject, it will throw
java.io.NotSerializableException
| Is This Answer Correct ? | 15 Yes | 2 No |
Answer / rohit
Serializable concept is related with the state persisitence
of the object.
Example:---
When u send the some object on internet it needs to be
serialized bcz before sending the object it first converted
in to byte & desrerialization is the process is used to get
it back in its original form
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / akj504
Ya that answers are expected but...
If we open ObjectOutputStream.java (which is used for
serialization) then we see the following code :
............................
writeObject0(Object obj, boolean unshared){
.............
} else if (cl.isArray()) {
writeArray(obj, desc, unshared);
} else if (obj instanceof Serializable) {
writeOrdinaryObject(obj, desc, unshared);
} else {
throw new NotSerializableException(cl.getName());
}
................
If we remove the checking instanceof (& recompile) or if we
override the writeObject0 method then
Will it still check whethere the class has implemented
serilizable ?
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / dbin
The problem with your own functionality is with deserialization process , when reconstructing the new objects that are equal to the objects you are trying to save....
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / aman kr aggarwal
well if we dont use Serializable interface which is a
marker interface, then the object which we want to
serialize and use writeObject() method then compiler would
throw exception as if other object which r related to that
object if not serialized.
So. to overcome this we have to use Seializable interface.
| Is This Answer Correct ? | 3 Yes | 6 No |
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