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2.2 A Simple Servlet Generating Plain Text

23

2.2 A Simple Servlet Generating 

Plain Text

Listing 2.2 shows a simple servlet that just generates plain text, with the out 

put shown in Figure 2 1. Section 2.3 (A Servlet That Generates HTML)

shows the more usual case where HTML is generated. However, before mov 

ing on, it is worth spending some time going through the process of installing,

compiling, and running this simple servlet. You'll find this a bit tedious the

first time you try it. Be patient; since the process is the same each time, you'll

quickly get used to it, especially if you partially automate the process by

means of a script file such as that presented in the following section. 

Listing 2.2 HelloWorld.java 

import java.io.*; 

import javax.servlet.*;

import javax.servlet.http.*;

public class HelloWorld extends HttpServlet {

  public void doGet(HttpServletRequest request,

                    HttpServletResponse response)

      throws ServletException, IOException {

    PrintWriter out = response.getWriter();

    out.println("Hello World");

  }

}

Figure 2 1

Result of Listing 2.2 (HelloWorld.java).

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