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Stuff about serializable

 
Bill Lee
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I have a question about Serialization. What are the conditions for an object to be serializable?
I know that all member variable in the object must be a primitive type, String or Serializable object.

Does the method's return value and argument need to be serializable too?

What if the body of a method uses an object that is not serializable?

example:


Thank you
 
David Newton
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IntelliJ IDE Ruby
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Only the object in question is being serialized--the return values of methods, or objects used inside methods, have nothing to do with it.
 
Campbell Ritchie
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You will have to check in the Java Language Specification, but I think it is only the instance fields which have to be serializable. It is not a case of primitive, String or Serializable. A String is a Serializable. So is an array (provided its elements are Serlalizable). You can check any class in the API because it will say "implements Serializable" near the top of the page for that class.
 
Bill Lee
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Thanks for the help guys.
 
Campbell Ritchie
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You're welcome
 
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