J2EE is stands for "Java 2 Enterprise Edition".
You can develop client-server or server-side applications, that require "J2EE Application Server".
You can develop enterprise applications like ERP(Enterprise Resource Planning), CRM (Customer Relationship Management) and complex websites.
You can easily divide into client-side (Rrunning on a Desktop PC) and server-side components running on a J2EE application server. Read More
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