is Static methodsl thread safe

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is Static methodsl thread safe

is Static methodsl thread safe

2006-03-04 - By Parab, Prashant

Back

Reply: 1 2 3 4 5

Hi Group

The question is whether static methods are thread safe just like
instance method.

Consider following example for the discussion.

public class TestFactory

{

public static Object getBean(String beanName)

{

/*

Code to return bean depending on the
argument beanName

*/

}

}

I am bit confused about how the method getBean will behave in the
multithreaded environment. The point of confusion is, all the static
declaration inside a class has only one copy in the memory. Assuming
this is correct then there should be only one copy of getBean method in
memory. So if two threads are accessing this method simultaneously then
they may corrupt the value of argument of each other and the logic will
fail.

Based on above discussion kindly let me know your view.

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<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
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</head>

<body lang=EN-US link=blue vlink=purple>

<div class=Section1>

Hi Group<o:p></o:p>

<o:p> </o:p>

The question is whether static methods are thread safe
just like instance method.<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

Consider following example for the discussion.<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

public class TestFactory<o:p></o:p>

{<o:p></o:p>

<o:p> </o:p>

         
public
static Object getBean(String beanName)<o:p></o:p>

{<o:p></o:p>

         
          /*<o:p></o:p>

         
              
      Code
to return bean depending on the argument beanName<o:p></o:p>

*/ <o:p></o:p>

} <o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

}<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

I am bit confused about how the method getBean will behave
in the multithreaded environment. The point of confusion is, all the static
declaration inside a class has only one copy in the memory. Assuming this is
correct then there should be only one copy of getBean method in memory. So if
two threads are accessing this method simultaneously then they may corrupt the
value of argument of each other and the logic will fail.<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

Based on above discussion kindly let me know your view. <o
:p></o:p>

<o:p> </o:p>

</div>

</body>

</html>

<table><tr><td bgcolor=#ffffff>This message contains
information that may be privileged or confidential and is the property of the
Capgemini Group. It is intended only for the person to whom it is addressed. If
you are not the intended recipient, you are not authorized to read, print,
retain, copy, disseminate, distribute, or use this message or any part thereof
. If you receive this message in error, please notify the sender immediately
and delete all copies of this message. 
 
</td></tr></table>
===========================================================================
To unsubscribe, send email to listserv@(protected) and include in the body
of the message "signoff J2EE-INTEREST". For general help, send email to
listserv@(protected) and include in the body of the message "help".