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2.4 Packaging Servlets

Listing 2.4 HelloWWW2.java

package coreservlets;

import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

public class HelloWWW2 extends HttpServlet {

  public void doGet(HttpServletRequest request,

                    HttpServletResponse response)

      throws ServletException, IOException {

    response.setContentType("text/html");

    PrintWriter out = response.getWriter();

    String docType =

      "Transitional//EN\">\n";

    out.println(docType +

                "\n" +

                "Hello WWW\n" +

                "\n" +

                "Hello WWW
\n" +

                "");

Compiling Servlets in Packages

There are two main ways to compile classes that are in packages. The first

option is to place your package subdirectory right in the directory where the

Web server expects servlets to go. Then, you would set the

CLASSPATH

 vari

able to point to the directory above the one actually containing your servlets,

that is, to the main servlet directory used by the Web server. You can then

compile normally from within the package specific subdirectory. For exam

ple, if your base servlet directory is

C:\JavaWebServer2.0\servlets

and

your package name (and thus subdirectory name) is

coreservlets

, and you

are running Windows, you would do:

DOS>

set CLASSPATH=C:\JavaWebServer2.0\servlets;%CLASSPATH%

DOS>

cd C:\JavaWebServer2.0\servlets\coreservlets

DOS>

javac HelloWorld.java

The first part, setting the

CLASSPATH

, you probably want to do permanently,

rather than each time you start a new DOS window. On Windows 95/98 you

typically put the

set

CLASSPATH=...

 statement in your

autoexec.bat

 file

somewhere  after the line that sets the

CLASSPATH

 to point to

servlet.jar

Second edition of this book: www.coreservlets.com; Sequel: www.moreservlets.com.

Servlet and JSP training courses by book's author: courses.coreservlets.com.

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