What is the difference between EAR, JAR and WAR file
Answered by Jey on 2005-05-08 11:23:41: In J2EE application modules are packaged as EAR, JAR and WAR based on their functionality
EJB modules which contains enterprise java beans class files and EJB deployment descriptor are packed as JAR files with .jar extenstion
Web modules which contains Servlet class files,JSP FIles,supporting files, GIF and HTML files are packaged as JAR file with .war( web achive) extension
All above files(.jar and .war) are packaged as JAR file with .ear ( enterprise archive) extension and deployed into Application Server.
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