Servlets are the Java programs that run on the Java-enabled web server or application server. They are used to handle the request obtained from the webserver, process the request, produce the response, then send a response back to the webserver. NetBeans is an integrated development environment (IDE) for Java. NetBeans allows applications to be developed from a set of modular software components called modules. NetBeans runs on Windows, macOS, Linux, and Solaris.
Prerequisites: Install Netbeans 8.2, plugin Java EE Version, GlassFish 5.0 Server.
 Steps to Create Servlet  Application using NetBeans IDE
- Choose File > New > Java Web > Web Application
- Specify Project Name, Location, and Folder
- Choose Deployment Server
- Set Java EE version
- Specify Context Path
- Optionally choose Java framework
- Under Source packages node, add new Servlet class
- Add functionality to doPost() or doGet() method
- From index.html call the servlet
- Clean and Build project
- Run the project, index.html will be rendered on localhost.
Step 1: Choose File > New > Java Web > Web Application. Specify Project Name, Location, and Folder
Step 2: Choose Deployment Server. Set Java EE version. Specify Context Path
Under Source packages node, add new Servlet class
Step 3: Configure Servlet Deployment
Step 4: Servlet page
Step 5: Index HTML page
Step 6: Clean and build then run.
Step 7: Observe the output in the red box.
