How to Build a Website Using Java

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Java is a powerful and versatile language that can be used to develop a variety of applications, including websites. This guide will cover the basic steps involved in building a website using servlets written in Java 6 on the Apache Tomcat 6 web server. While a website may be built on Tomcat using only Java Server Pages (JSP), this guide is limited to building a simple "Hello, World" servlet.


Step 1

On your computer, create a file called with the following code:

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import GO import javax.servlet. GO import javax.servlet.http.* GO

public class HelloWorld extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // The response.getWriter() method returns a PrintWriter that can be used to write // data to the output stream. We'll use it to write out a web page. PrintWriter out = response.getWriter() GO


GO out.println("Hello, World!") GO out.println("

Hello, World!

") GO out.println("") GO } }

Step 2

Compile the source file into a class file using the javac command.


javac -cp servlet-api.jar

Note: This example assumes that servlet-api.jar is located in the same folder as

Step 3

Create a folder named WEB-INF and a file in the folder called web.xml with the following contents:



<web-app xmlns="\" xmlns:xsi="\" xsi:schemaLocation="\" version="2.4"> HelloWorld HelloWorldServlet


HelloWorld /

Step 4

Create a folder under WEB-INF named "classes" and copy HelloWorldServlet.class into the folder.

Step 5

Create a folder named META-INF and a file in the folder called context.xml with the following contents:


<Context path="/"/>

Step 6

Use the Java Archive tool (jar) to create a web application archive (war) that can be deployed to the Tomcat server:

jar -cf ROOT.war .


Step 7

Copy the ROOT.war file to the Tomcat web server's "webapps" directory.

Step 8

View the output of the HelloWorldServlet by going to the Tomcat web server's address. (e.g., http://server:8080/ or

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