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10.1 Introduction

Tomcat, available from http://jakarta.apache.org/tomcat, is an open source servlet container and the official reference implementation for Java Servlet and JavaServer Pages technologies. Table 10-1 shows Tomcat versions and the specification that each version adheres to. All recipes in this chapter assume Tomcat 4.1.x.

Table 10-1. Tomcat versions and specifications

Tomcat version

Servlet specification

JSP specification

5.0.x (Not yet released)

2.4 (Work-in-progress at Sun)

2.0

4.1.x

2.3

1.2

3.3.1

2.2

1.1

JBoss, available from http://www.jboss.org, is an open source EJB container. JBoss is extremely specification-compliant, making it well suited for application-server neutral development. JBoss also supports hot deploying applications, including web application WAR files. JBoss is not a servlet container. JBoss can embed a servlet container, though. For example, you can configure JBoss to use Tomcat.

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