It is useful to note that it is theoretically possible for two competing
Threads to enter the setData method and get past the "if (!
isInitialized)" statement before one of them changes the value to true,
causing possible data corruption. This is why I prefer to initialize
singletons either in a static initializer or at the time of declaration.
Practically of course, there may be no such threat at all.
Erik
Ashish Kulkarni wrote:
Hi
that is what i am going to do,
hope it is a good practise
Ashish
--- Cedric Levieux <[EMAIL PROTECTED]> wrote:
public MyClass
{
private boolean isInitialzed = false;
private static String data;
public static String getData()
{
return data;
}
public static setData(String input)
{
if (! isInitialzed)
{
data = input;
isInitialzed = true;
}
}
}
----- Original Message -----
From: "Ashish Kulkarni" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List"
<user@struts.apache.org>
Sent: Wednesday, January 26, 2005 8:15 PM
Subject: Re: [OT] a java question
so it will be some thing like this
public MyClass
{
private static String data;
public static String getData()
{
return data;
}
public static setData(String input)
{
data = input;
}
}
this will work, but how to make sure that setData
is
called only from initalization class, and no one
else
calls this method , how to protect this method
from
being called by other classes
Ashish
--- PA <[EMAIL PROTECTED]> wrote:
On Jan 26, 2005, at 20:08, Ashish Kulkarni
wrote:
how do i protect it from updated
by any other class.
Just don't. Use a static accessor method
instead.
Cheers
--
PA
http://alt.textdrive.com/
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