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GlassFish @ Delhi University

Posted by arungupta on December 14, 2007 at 7:18 AM PST
I presented on GlassFish and related
technologies (Metro,
and jMaki) at the Department of Computer Science,
Delhi University last week. The
slides are available

The talk was very well attended with approximately 120 students and 4 faculty
members. The students were pretty excited and had great a interactive session.


Being an alumni of the school (many years ago ;), it was great seeing the new building of the
department, meeting the faculty and interacting with the students. I reached there an hour earlier so that I
can mingle with the staff and students and it was a lot of fun.

The department faculty proposed to use GlassFish instead of Tomcat for their
next semester assignment. I believe this is a great move as it will allow the
students to understand the simplicity and power of a great open-source
and Java EE 5 compliant Application server.

I initiated the process of recruiting a
Campus Ambassador from Delhi
University and this will help establish a better relationship between this
University and Sun Microsystems.

Here are the questions and answers that were asked during the session:

  1. Amongst the different Java training courses, how do I decide which one to pick ?

    Sun Learning defines several
    Learning Paths
    for different Java technologies (EE, SE, ME, Web Services and Web 2.0). Pick
    an appropriate learning path depending upon your interest. In addition,
    Sun Training Catalogue
    (click on your country) shows different events conducted by Sun Learning in
    the local geogrpahy.
  2. How does Sun make money with GlassFish being open sourced ?

    That's true, GlassFish is 100% open-source and totally free to use. The
    business model for Sun is that of selling support and services:
  3. What are the dis-advantages of GlassFish ?

    GlassFish provides an open source, production-quality and Java EE 5
    compatible application server. It has world class performance ([1],
    .NET interoperable Web services stack, out-of-the-box clustering, load
    balancing and high availability support. However instead of identifying dis-advantages,
    here are some areas for improvement:

    • Feature-wise: The footprint for GlassFish v2 is higher than some
      non-full JavaEE containers (like Tomcat). This problem will disappear
      GlassFish v3 which is small (< 100 kb), fast (starts up
      < 1 sec) and modular (load only required containers).
    • Ecosystem-wise
      • Community is not as well developed as Tomcat or JBoss because we
        have not been around as long. However the
        is continuously increasing.
      • We are not yet as transparent as Tomcat, but we are more
        transparent than anybody else (including JBoss). Transparency will
        continue to improve in the future.
      • Our governance is still in transition.
  4. Any comparison between NetBeans and Eclipse ?

    Why NetBeans ?
    explains the top reasons to use the NetBeans IDE. Some specific points are:
    • Consistent UI across all platforms where as Eclipse runs best on
    • A friendlier environment for people who are new with links to sample
      apps and docs accessible from within the IDE.
    • An easy to use website with tons of quality docs and screencasts.

    Here are couple of more links that provide a comparison between the IDEs:

  5. What are the main features of Ruby as compared to Java ?

    A comparison of Ruby and Java is explained in this

  6. Why Ruby when there are many other languages ?
    • Ruby is getting popular due to
    • Ruby-on-Rails very popular among web developers.
    • JRuby is a pretty mature implementation of Ruby in Java, running on
      JVM and able to use existing Java libraries.
    • Complete deployment story on Solaris -- customer can chose native
      RoR or JRuby on Rails on GlassFish.
  7. What is the difference between Tomcat and GlassFish ?

    Tomcat is a Servlet container that can host JSP and Servlets. GlassFish is a
    Java EE 5 compliant application
    server that includes implementation for a Web services stack (Metro), EJBs,
    Java Persistence and many others incuded in the
    Java EE 5 specification.
    In addition to this, GlassFish also provides out-of-the-box clustering, high
    availability and load balancing capabilities that are required for
    enterprise applications. Read more about

    Why use GlassFish
  8. What does Sun offer to students ?

    The offerings are described in detail

  9. What is ? is a premier web-based, open
    community created to facilitate Javaâ„¢ technology collaboration in applied
    areas of technology and industry solutions. is a central gathering
    place for Java technology enthusiasts and existing communities across
    industries, platforms, and interest groups. Read more about in the
  10. How do I create a brand new jMaki widget ?

    This is explained in
  11. What are the main differences between GPL and CDDL ?

    A detailed difference between EULA, GPL, CDDL and BSD in terms of copyright
    and patent rights is explained

  12. What are the different options of doing a collaborative research in
    association with Sun Microsystems ?

    The Collaborative Research program is explained
  13. What is the difference between GlassFish v2 and Sun Java System
    Application Server 9.1 ?

    There are three key differences:

    The detailed differences are highlighted

  14. What are the different ways GlassFish can be configured in NetBeans ?

    Two ways:
    • If you download a full version of NetBeans IDE then GlassFish comes
      pre-bundled and is installed for you.
    • You can configure an existing GlassFish installation on your machine
      in the Services tab. If the Services tab is not visible, then select "Windows"
      menu item and then "Services". Right-click on "Servers",
      select "Add Server...", select "GlassFish V2"
      in the "Choose Server" dialog box. Click on "Next"
      and follow the instructions.

The complete album is here:

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