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Core Java & J2EE & Advance Java

  1. Jun 22, 2011 #1
    What is the difference between them? Which of them is used in building websites and which of them is used in designing application for mobile phones and other systems?
     
  2. jcsd
  3. Jun 22, 2011 #2
    Core Java is probably the standard SDK: http://download.oracle.com/javase/6/docs/api/
    which is ever bloating with useful "features".

    J2EE is the "Enterprise Edition" which adds a framework for server-side web apps. I don't remember if JDBC (the database interface code) is part of J2EE or a separate package. But it's for making online stores and other useful nonsense that usually use a database server for "persistence" of objects. See this: http://download.oracle.com/javaee/6/api/

    "Advance Java" may mean "advanced" for which I found a book: http://java.sun.com/developer/onlineTraining/Programming/JDCBook/. This indicates that JNI (the native code interface, e.g., to C functions) and JDBC are "advanced".

    Mobile devices have a sub/extended-set called JME, but I don't know how that now relates to Android and the bouhaha with Google.

    Mostly you need to go to the great-satan-Oracle's java site and see if you can make any sense of today's plethora of offerings.
     
  4. Jun 22, 2011 #3
    There are several versions of java:
    standard edition (SE): the "core" java if you will
    enterprise edition (EE): things like web apps and lots of enterprisy goodies
    mobile edition (ME): for mobile devices

    If you want to learn java you will have to start with standard edition (likely what you refer to as "core" java) as this will provide you with the basics of the language.

    To clear up JDBC - it is not part of J2EE.
     
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