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WAR

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What is a WAR file?

A WAR file is a JAR archive file that is the packaging part of deploying web applications using J2EE. A typical WAR file contains:

• A deployment descriptor file named web.xml and typically found deployed in the WEB-INF sub directory
• Can have html, images, jsp, or servlet jars
• If ejbs are sued in the web application than ejb jars will be included
• Third party libraries in the form of jars

Because a WAR file is a standard JAR archive file it is created by using a deployment tool that happens to use the JAR archive tool to create archive.

Resources

Sun's J2EE Technology Center

SUN's Packager Tool J2EE Tutorial Entry


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