Re: Is Singleton thread safe?

You cannot syncronize a static variable. It is always better if you modify your variables using set/get methods. Once you syncronize your set method your variable would be thread safe.

I saw people using synchonize blocks for servlet instance variables instead of maintaining local variables. Since servlet is a singleton this is necessary. Apart from this case(Singleton) I did not see people trying to synchronize static variables.

Regards,

Suresh Koya

-----Original Message-----
From: An interest list for Sun Java Center J2EE Pattern Catalog [mailto:J2EEPATTERNS-INTEREST@JAVA.SUN.COM]On Behalf Of Julia Liu
Sent: Friday, April 01, 2005 9:47 PM
To: J2EEPATTERNS-INTEREST@JAVA.SUN.COM
Subject: Re: Is Singleton thread safe?

Thanks for reply. Could I Synchronized static varible?

Sureshbabu Koya <Sureshbabu.Koya@SYMPHONYSV.COM> wrote:

Making a singleton thread safe is up to you. You should also think about how the performance get a hit if you want to make a singleton threadsafe.

regards,

Suresh

-----Original Message-----
From: An interest list for Sun Java Center J2EE Pattern Catalog [mailto:J2EEPATTERNS-INTEREST@JAVA.SUN.COM]On Behalf Of Julia Liu
Sent: Friday, April 01, 2005 9:24 PM
To: J2EEPATTERNS-INTEREST@JAVA.SUN.COM
Subject: Is Singleton thread safe?

Hi,

Is Singleton thread safe? Why?

Thanks

Julia Liu

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Julia Liu

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Re: Is Singleton thread safe?

Sureshbabu Koya

2005-04-01