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Volatile keyword

 
Greenhorn
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Hi,

Could explain what is the use of volatile keyword in java. I have read it many places but I am always confused with it.

Thank you.
 
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Check this.
 
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if the variable is declared as volatile then the it means that each thread will have a copy of that variable ......

thanks & regards

srikanth reddy
 
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Originally posted by srikanth reddy:
if the variable is declared as volatile then the it means that each thread will have a copy of that variable ......

thanks & regards

srikanth reddy



Actually the volatile meaning is oposite. Volatile variable does have only one master copy and threads access it directly.

Non-volatile variables may or may not (depends on JVM) have a private copy for each thread. The private copies are synchronized with the master copy only at certain points.
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