What is Java Servlets?

Servlets are server side components that provide a powerful mechanism for developing server side programs.

What is Java Servlets?

What is Java Servlets?

     

Servlets are server side components that provide a powerful mechanism for developing server side programs. Servlets provide component-based, platform-independent methods for building Web-based applications, without the performance limitations of CGI programs. Unlike proprietary server extension mechanisms (such as the Netscape Server API or Apache modules), servlets are server as well as platform-independent. This leaves you free to select a "best of breed" strategy for your servers, platforms, and tools. Using servlets web developers can create fast and efficient server side application which can run on any servlet enabled web server. Servlets run entirely inside the Java Virtual Machine. Since the Servlet runs at server side so it does not checks the browser for compatibility. Servlets can access the entire family of Java APIs, including the JDBC API to access enterprise databases. Servlets can also access a library of HTTP-specific calls, receive all the benefits of the mature java language including portability, performance, reusability, and crash protection. Today servlets are the popular choice for building interactive web applications. Third-party servlet containers are available for Apache Web Server, Microsoft IIS, and others. Servlet containers are usually the components of web and application servers, such as BEA WebLogic Application Server, IBM WebSphere, Sun Java System Web Server, Sun Java System Application Server and others.

Servlets are not designed for a specific protocols. It is different thing that they are most commonly used with the HTTP protocols Servlets uses the classes in the java packages javax.servlet and javax.servlet.http. Servlets provides a way of creating the sophisticated server side extensions in a server as they follow the standard framework and use the highly portable java language.

HTTP Servlet typically used to:

  • Priovide dynamic content like getting the results of a database query and returning to the client.
  • Process and/or store the data submitted by the HTML.
  • Manage information about the state of a stateless HTTP. e.g. an online shopping car manages request for multiple concurrent customers.

Tutorials

  1. Accessing Database from servlets through JDBC!
  2. History of web application
  3. Web Server
  4. Servlet Container
  5. Life cycle of Servlet
  6. Features of Servlets 2.4
  7. How to run a servlet
  8. Snooping Headers
  9. Dice Roller
  10. Simple Counter In Servlet
  11. Getting Init Parameter Names
  12. Multiple values for a single parameter
  13. Snooping the server
  14. Send Redirect in Servlet
  15. Session Tracking
  16. To Determine whether the Session is New or Old
  17. Pre- Existing Session
  18. Get Session Id
  19. Inserting Data In Database table using Statement
  20. Retrieving Data from the table using Statement
  21. Inserting data from the HTML page to the database
  22. Retrieving Data from the table using PreparedStatement
  23. Getting Columns Names using Servlets
  24. Getting Number of Columns
  25. Getting Number of Rows
  26. Deleting Rows From Table
  27. Deleting All Rows From the database Table
  28. How to add a column in a table
  29. Changing column name
  30. insert into statement in sql using servlets
  31. join tables mysql
  32. Natural Left Join
  33. Servlet Tutorials Links
  34. sendRedirect
  35. Random Redirector
  36. Servlet Context
  37. HttpSessionListener
  38. Inserting Image in a database Table
  39. say hello in spanish
  40. How to delete a table in mysql