How Action class in struts2 Handle Multithreading

Replies

• 

  Anoop Kumar

  They don't have mutable class objects.
  If action class will have mutable class object then it will be problematic in mutithreading.
• 

  Ajay Pandey

  My question is how action class in struts2 ensure concurrency(thraed safty)...... I know action class is normal java class.I am working as java developer since last 2 year.Now my application working in multithreaded enviorment and its working fine .But how action class work........?
• 

  Anoop Kumar

  I don't have access to machine right now.
  I think there is saparate action classes classes are instantiated for each request.
  Can you make a instance variable and keep in loop in execute method. See how it works ?
  But I am sure there only one object cearted for FilterDispature servlet.
• 

  Ajay Pandey

  thanks ianoop.I highely appreciated ur valuable responce.
  I got answer from my "black book for struts2".Struts 2 Action objects are instantiated for each request, so there are no thread-safety issues.Actually FilterDispature servlet object created wn request maps in web.xml to varify url and call for ActionMapper class.
• 

  Anoop Kumar

  Yes this is difference between struts 1 and 2 .
  In struts 1 only one object of action will be created.
• 

  micheal john

  ianoop

  Yes this is difference between struts 1 and 2 .
  In struts 1 only one object of action will be created.

  
  Guys i'm new to java frameworks please suggest me some main topics to be covered in spring and struct