Introduction
This article explains how to implement a Servlet in the Netbeans IDE. The Netbeans IDE is used for the development of the example.
What is Servlet?
A Servlet is basically a Java class that extends the features of servers, Servlets are normally used to extend the applications hosted by the web servers.
Features of Servlet
- Persistent
This feature enables the servlet to handle multiple requests, it can handle multiple requests after the servlet is loaded in the web server memory. - Fast
The Servlet provides quick response to the client request. - Platform Independent
Servlets are platform-independent, in other words, they can run on any hardware. - Efficient
The feature of handling multiple client requests makes a servlet more efficient than other server-side technologies. - Portable
A Servlet can run on various platforms, this makes servlets portable.
Advantages of Servlet
The advantages of Servlets are:
- Powerful
- Safety
- Extensibility
- Integrity
- Inexpensive
- Secure
- Performance
Disadvantages of Servlet
The disadvantages of Servlets are:
- The Java Runtime Environment (JRE) is required on the server to run the servlet.
- Designing a servlet is complex.
- The Web administrator will need to learn how to install and maintain servlets.
Example
In this example; we discuss how to implement a servlet in the Netbeans IDE. There is a certain procedure in the Netbeans IDE that we need to follow as explained below.
Step 1
Open the Netbeans IDE.
Step 2
Click on "File" from the Menu bar as in the following:
Step 3
Click on "New Project" as in the following:
Step 4
Select "Java Web" and "Web application" as in the following:
Step 5
Click on "Next" as in the following:
Step 6
Instead of project name specify "ServletDemo" and instead of project location specify the path where you want to store your project and click on "Next".
Step 7
Select the server by which you want to run your project and then click on "Next" as in the following:
Step 8
Click on "Finish" as in the following:
Step 9
Right-click on "Project" -> "ServletDemo" then select "New" then select "Servlet" as in the following:
Step 10
Now provide the class name (as given New) and then click on "Next" as in the following:
Step 11
Click on "Finish" as in the following:
Step 12
Now write the Servlet code as in the following:
Step 13
Now go to "New.java" and right-click on that, click on "Run" from the menu bar as in the following:
Step 14
A window will appear to click on "ok" as in the following:
Output
The output will appear on your browser as in the following:
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