Java Enterprise Server Vs Glassfish

I'm sorry, if my questions looks naive. recently during a technical discussion, one of our architect referred about using Java 开发者_开发问答Enterprise Server in his organization. He said, we're using it since 3-4 years.

As far as Application servers from Sun microsystem are concerned, I knew about Glassfish, but I never heard that Sun has anoy other release on Application server front.

Do you know more about Java Enterprise Server (or JES) that are being used as application servers for web application?

JES isn't a known acronym for Java Enterprise Server. JES used to be Sun "Java Enterprise System" which was a suite of various servers including an application server (Sun Java System Application Server). SJSAS was later renamed Glassfish so your architect is probably just using an older release of what is now know as Glassfish.

Otherwise, JES Web Server happened to be kind of an application server too (more precisely a servlet container like tomcat) so that might be what he referred to as JES.

Glassfish is a Java Enterprise Server. Others include JBoss, WebLogic, and WebSphere.

There also are servlet containers, which aren't fully featured servers such as Tomcat and Jetty.

What makes Glassfish special is that it is the reference implementation for Enterprise Java. That is, any other server must mimic the functionality of Glassfish in order to comply with Java EE.

As far as Application servers from Sun microsystem are concerned, I knew about Glassfish, but I never heard that Sun has anoy other release on Application server front.

"Oracle GlassFish Server" was previously "Sun GlassFish Enterprise Server" before Oracle acquired Sun, and prior to that, the server was known as "Sun Java System Application Server."