How to Build a Website Using Java

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

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

Step

import java.io. GO import javax.servlet. GO import javax.servlet.http.* GO

Step

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

Step

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

Hello, World!

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

Step

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

Step

javac -cp servlet-api.jar HelloWorldServlet.java

Step

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

Step

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

Step

<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?> HelloWorld HelloWorldServlet

Step

HelloWorld /

Step

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

Step

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

Step

Step

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

Step

jar -cf ROOT.war .

Step

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

Step

View the output of the HelloWorldServlet by going to the Tomcat web server's address. (e.g., http://server:8080/ or http://192.168.0.10/)