Java/Servlets interview questions: -Can you explain differences between getSession(true) and getSession(false)?

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Session's can be considered as a series of related interactions between client and the server that take place over a period of time. Because HTTP is a stateless protocol these series of interactions are difficult to track. That’s where we can use HttpSession object to save in between of these interactions so that server can co-relate between interactions between clients.

 

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Figure: - Session code walkthrough


Above is the code snippet which displays session data. Step1 returns an HttpSession object from the request object. “true” parameter in the “getsession” function ensures that we get a session object if there is no current session object in request which ensures that we never get a null session object. In Step 2 we are using the “getattribute” function to return the session value. In step 3 we are setting the session value with “Name” key.

 

See the following video on Java which describes Hibernate and it concepts: -

 

 

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Comment on this post

aoiblog 04/30/2012 15:27

You can get more question here .


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