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If there are 2 different versions of object streams on disk and only one object definition, how will the JVM reject the wrong one? Can you fool the JVM

  
Total Answers and Comments: 2 Last Update: March 31, 2007   
  
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 Best Rated Answer
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Submitted by: jdemaste
 

If an object X is serialized and you perform modifications then you can ensure that the serialVersionUID  matches the first one and can thereby decieve the JVM.
There are limits altering logic is acceptable but removing fields is not.

Calculate the default serialVersionUID of an object with http://jsourcery.com/output/sourceforge/javaassist/3.0/javassist/SerialVersionUID.html



Above answer was rated as good by the following members:
geeksterrahul, talktoatish
August 11, 2005 02:52:29   
sudheer        
RE: If there are 2 different versions of object streams on disk and only one object definition, how wil...
No
we cannot fool the JVM
It willr eject the wrong one by checking class id and definitions

 
Is this answer useful? Yes | No
March 31, 2007 09:25:29   
jdemaste Member Since: March 2007   Contribution: 1    
RE: If there are 2 different versions of object strea...

If an object X is serialized and you perform modifications then you can ensure that the serialVersionUID matches the first one and can thereby decieve the JVM.
There are limits altering logic is acceptable but removing fields is not.

Calculate the default serialVersionUID of an object with http://jsourcery.com/output/sourceforge/javaassist/3.0/javassist/SerialVersionUID.html


 
Is this answer useful? Yes | NoAnswer is useful 2   Answer is not useful 0Overall Rating: +2    

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