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
Learn how to store Java source in CMS and use MMS
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 is not 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 just obvious?
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.
"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
"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
"When looking for sage advice on IT, go to the guru,
Heather Froeschl, Book
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.