Simple form example with servlets

1. First Create a view page which can be either a html or  jsp page under webpages.
   
2. Create a servlet under source packages with the name displayname.java.
   
3. Edit the web.xml page ..
   
   
   
   
                                                                                                                       

Output:

Life cyce / Interfaces in Java Servlets

Life cycle :
           The life cycle of servlets can be defined with their processes from which they created  , processed and destroyed.

1. Servlet is initialized with init() method.
2. Service() method reads the data requested from the server and processes it with the database , produces the output to the server.
   i) doPost(),
   ii) doGet(),
   
3. destroy().Destroys the servlet process.

Servlets packages

Servletes can be created using java's standard packages which are

• javax.servlet
• javax.servlet.http

Advantages of Servlets

• Servlets gives better performance
• Portability
• Secure
• Robust   Because it uses java

What is Java servlets?

 Java servlets are used to create web applications. Servlets are programs that runs  on web or application server . Servlets acts as a bridge between Database and HTTP server requests