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Mobile Computing & Wireless Application Development - J2EE -

Wireless application development has the following characteristics:
  • multi-platform and multi-device support, since no single device can serve entire organization's needs
  • multi-wireless network (especially wide area) support
  • multi-backend application and database support
  • integration with web application server platforms
There are a number of application platforms for supporting mobile applications.  However, Java Enterprise Edition (J2EE) does support multiple operating system platforms. It is becoming an important application development platform for non-Microsoft environments.  In fact, IBM's Websphere application server utilizes J2EE. Current (01/20001) version of J2EE is 1.2. New version of J2EE 1.3 has stronger XML support.
Expected features in J2EE 1.3
  • Stronger Java XML parsing
  • Connector specification for integration with back-end applications
  • Enterprise Java Beans 2.0, including message-driven beans through Java message beans
  • XML view of Java Server Pages
  • Improved custom tag library APIs
Resources & Vendor Products
  • VisionAir's DRE Wireless Gateway - based on an open architecture
  • Also do a keyword search on our home page for more J2EE and J2ME related news on Goforecam website.
Goforexam Advisory:  J2EE is gaining gradual acceptance as an application development platform of choice. Business application developers should also consider higher-level tools available from IBM, Oracle, Sybase iAnywhere, Microsoft, @Hand, etc.. The latter category of tools continue to have superior backend integration with legacy systems from these vendors. If these higher-end tools are based on Java or have hooks into Java beans and Java functional modules from other vendors, it becomes easier to  utilize Java-based software platform from multiple vendors.


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Question 1. Which of the following is least like the others?
A.    cube
B.    sphere
C.    pyramid
D.    circle

D (because the circle is the only two-dimensional figure)

Question 2. Consider a language which uses the following set of characters:
Small set: { a b c }
Large set: { A B C }
Punctuation set: { x y }
This language must follow the following rules:
  1.    A punctuation character must end all series.
  2.    A series can have up to but no more than 4          characters,including punctuation characters.

Does the following series follow all the rules of the language defined above?
  A.    Yes
  B.    No

A (the series has only four characters and ends in a punctuation character)

Question 3. Consider the following flow chart for a customer:

The person in No.1 is:
    A.   Married, with children
    B.   Married, with at least one son
    C.   Unmarried, with at least one daughter
    D.   Unmarried, with at least one son
    E.   Unmarried, with no children