Discover what is required to write real business applications on
OpenVMS using Java. Java on
OpenVMS covers the ugly side of Java, the Java Native Interface, so
readers can more easily
develop back end applications.
- Requested by the industry as a follow-up to The Minimum You Need
to Know to Be an OpenVMS Application Developer
- Learn how to store Java source in CMS and use MMS for builds
- Use Java to replace existing OpenVMS applications which use
FMS,RMS, and/or RDB
Tips from the Book
- Everything is a class….almost.
- Passing by reference isn’t what you think it is, no matter what
the other books tell you.
- JNI_ABORT
means you want to free your local copy without copying back to the Java
environment. JNI_COMMIT means you want to copy back to Java and
keep your local copy.
- Naturally, 0 means you want to copy back to Java and free your
local copy. Isn’t that justobvious?
- Date
handling in Java is somewhat littered with land mines. Java
provides you with a Date class, then tells you not to use it. When you
use the classes that are supposed to replace the now depreciated Date
class, you are forced to use Date objects. Use a Date object in
your code where it will actually get a name and the compiler will flag
a warning.
Reviews
"Hughes confronts the biggest setbacks of working with Java and what
you need to do to work
through them."
Regan
Windsor, Reader Views
"The exercises, assignments and teasers are designed to keep you wide
awake - and in the
process you'll be well on your way to dealing with the many challenges
and dangers you'll come
across in the real world."
ETA
Online Review
“An Essential Manual For Application Developers. I highly
recommend the book as an asset to
computer programmers and those entering the IT field.”
Tracy
Roberts, Write Field Services Reviewer
“I've attended two college semesters of Java programming ("Java I" and
"Java II") but wished I had
read this book before listening to sermons from purveyors of the Java
cult. This book provides a
wonderful reality-check. In the Introduction he relays a
tongue-in-cheek description of how
corporate IT decisions are made. I am now sure he has figured out a way
to bug my office
telephone line.”
Neil
Rieck, OpenVMS Application Developer
"When looking for sage advice on IT, go to the guru, Roland Hughes."
Heather
Froeschl, Book Review Journal
But as Fred Brooks observed in his IT classic, The Mythical Man-month,
the root of the problem is not just rising costs, but something
inherent in the evolving nature of the information revolution. As the
amount of data available rises faster than the ability to process it,
programming tasks become ever more challenging. As a result, even as
hardware costs are dropping, many software costs continue to rise. To
cut costs, many projects start cheap, and are forced to add staff later
when problems emerge. Unfortunately, the addition of people to a
software project late in the process actually makes things worse. In a
similar vein, Hughes suggests that IT management, by looking for a
silver bullet, is ignoring the roots of the problem by only seeking
short-term cost-cutting solutions. Silver bullets are often advertised,
but do they really exist? Hughes clearly feels that in the end, quick
fixes and short term cost cutting measures are penny wise and pound
foolish. In the final section of the book, “Ruminations,” Hughes
engages in a colorful and educational rant about the state of the IT
industry and the programmers that work in it, offering useful advice
and insight that will be valued by novice and veteran programmers
alike. Bravo, Mr. Hughes! Any IT professional using VMS should have
this book on his/her shelf, and the “prequel” and sequel as well.
Rod
Clark, bookreview.com
Copyright © 2007
TheMinimumYouNeedtoKnow.com. The information on this page may not
be reproduced or republished without prior permission from Roland
Hughes.
