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Classic Tag Handlers - Are they thread safe?

Subbaiah Annamalai

Joined: Dec 17, 2007
Posts: 9
Hi All,

Are Classic Tag Handlers thread safe? HFSJ mentions [pg 837 second edition] that they are thread safe. Is it right? Because container may re-use the classic tag handler instances if there are multiple occurrences of the tag with same attribute values in same page or different jsp pages. In that case, same instance variables may get updated by multiple threads at the same time.

Is HFSJ incorrect? can anyone clarify this?

Musab Al-Rawi
Ranch Hand

Joined: Aug 06, 2007
Posts: 231

Each instance will handle a tag occurrence. It is like wen you have two String instances or two Book instances each instance will have its own data members.
so there are no thread issues here.

Bobby Sharma
Ranch Hand

Joined: Mar 18, 2008
Posts: 598

Originally posted by Musab Al-Rawi:

so there are no thread issues here.

True,there is no headache of thread with tags

best regards,
[ May 21, 2008: Message edited by: omi sharma ]

Most of the programming problems can't be solved because you don't know what the exact problem is.
Defining your problem correctly leads you to the right solution.
I agree. Here's the link:
subject: Classic Tag Handlers - Are they thread safe?
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