Object Graph in Java Serialization
Most of you must be aware with the Serialization involving single object but have you ever thought what if the object has reference to other objects too. Will it be serialized? Will reference objects will be serialized?
Answer to these queries is yes, you don’t have to explicitly serialize reference objects. Let’s find out how this can be achieved.
What is Object Graph?
An Object Graph is the set of objects which will be serialized automatically, if the object which contains reference to them is serialized.
In other words, we can say that when we serialize any object and if it contains any other object reference then JVM serializes the object and as well as its object references.
Lets make it more clear with the help of a simple example.
Value of i after Serialization is 10 Value of j after Serialization is 20
Note: In object graph every object should be serializable. If at-least one object is not serializable then we will get runtime execution saying NonSerializableExecution.
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