Answer Posted / javablossom
struts 1.x is threadsafe and struts 2.x is not thread safe
Reference:
In Struts1, Action resources must be thread-safe or
synchronized. So Actions are singletons and thread-safe,
there should only be one instance of a class to handle all
requests for that Action. The singleton strategy places
restrictions on what can be done with Struts1 Actions and
requires extra care to develop. However in case of Struts
2, Action objects are instantiated for each request, so
there are no thread-safety issues.
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