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servletContext()

Maulin Vasavada
Ranch Hand

Joined: Nov 04, 2001
Posts: 1871
hi
what is a servletContext()?
if i run tomcat then all the servlets that r run from that tomcat instance is said to be in one servletContext(). right?
then what is meant when we say we want to have communication b/w two servletContexts??? two tomcats r running on the same machine or different machines?
regards
maulin.
Madhav Lakkapragada
Ranch Hand

Joined: Jun 03, 2000
Posts: 5040

if i run tomcat then all the servlets that r run from that tomcat instance is said to be in one servletContext(). right?

errrrr.......wrong.
A ServletContext is the context in which a given servlet is running. This will be your web-application. In other words, ServletContext is the application in which a servlet is available.
When you say communication between two ServletContexts, its like communicating between two web applications. I have never done this, but theoritically speaking this is possible.
So, ONE Tomcat running on a machine allowing different applications available, to exchange data (communicating).
regds.
- satya


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Vamsidhar Chenepalli
Greenhorn

Joined: Feb 07, 2002
Posts: 22
rephasing Satya's words..
Every App. server can have multiple web-applications. Each web application will have one servlet context under wihch all the servlets of the perticular applications will run.
Each web app. is mapped to a logical path on the server.
Servlets with in a web app. can communicate with each other using servlet context. For a detailed discussion read SRV.3 from servlet specification.
hope this helps
Vamsi


Vamsi Chenepalli<br />IBM Certified Enterprise Developer<br />IBM Certified Websphere Specialist<br />IBM certified solution developer for VAJ<br />IBM certified specialist for VAJ<br />SCWCD<br />Sun Certfied Java Architect<br />SCJD,SCJP
 
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