Finalize and Transient

Posted on 2006-05-07
Medium Priority
Last Modified: 2010-03-31
What is the use of finalize and transient keyword
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hoomanv earned 80 total points
ID: 16624329
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ID: 16624398
another finalize: http://cs.anu.edu.au/~Steve.Blackburn/pubs/papers/finalize-pjw3.pdf

a transient variable will not be written out when an instance is serialized
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When you write or read an object to a file or network or other stream using serialization process, It writes/reads the complete object state that means it writes the object, it's instance variables, and  super class instance variables except transient variables and class (static) variables

Variables that have access modifier  'transient'  will not be read from or written into streams. It gives facility to avoid writing unnecessary data into streams. In other words, it boosts the performance by avoiding writing unnecessary data into streams.
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by:Mayank S
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Author Comment

by:Manikandan Thiagarajan
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could you explain with simple , what is the use of finalize
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Assisted Solution

by:Mayank S
Mayank S earned 120 total points
ID: 16630620
I personally never use it. When you call System.runFinalization (), it calls finalize () on all objects eligible for garbage-collection. By default, the finalize () method in Object is protected. You can override it in your class using:

public void finalize ()
  // do some clean-up like closing resources, DB connection pools, etc


You can also set the JVM to call finalize () on all objects when the application exits using System.runFinalizersOnExit ( true ) ;

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