HP-UX Java™ - How To Develop Java Applications for HP-UX

Recommended IDE tools for this environment are Together ControlCenter and
Metrowerks' Code Warrior
One advantage of development on a Windows (or Linux or Unix) desktop workstation
with remote targeting is that these desktops support a large number of Java™ analysis
tools that can be used to validate the source code. An excellent example of this is the
Jtest product from ParaSoft.
Prepare HP-UX for Java™ deployment
NOTE: Installing patches and changing kernel parameters should be made only by
knowledgeable HP-UX system administrators. Root access is needed for both.
There are a number of HP-UX patches that have been identified as requirements for
Java™ applications. A list of these patches can be found on the following web page:
Patch Information. Install all of the patches shown for your HP-UX version and JDK
version. Or you may install the most recent Quality Pack for your OS, which will reduce
the number of individual patches you need to install.
The Java™ environment on HP-UX requires that the kernel parameters be set to provide
adequate resources for proper execution. HP has developed a free tool, Java™
Out-of-Box, which upon installation installs startup (RC) scripts, modifies kernel
parameters, rebuilds the kernel, and reboots the system, thus providing better out-of-box
behavior for Java™.
In addition, HP has developed a free tool, HPjconfig, that will evaluate any HP-UX
server to determine if it has the necessary kernel parameter settings and OS patches
for Java™ applications. It uses the same lists of parameters and patches referenced
above and provides simple advice on any necessary changes. It will also provide a
SAM input file to allow the system administrator to make the kernel parameter changes
automatically.
Debugging a Java™ application
There are several approaches to debugging Java™ applications. The most common
methods are listed here in order of increasing sophistication.
• The simplest, most popular, least expensive approach is to use
system.out.println to find out what the application is doing internally.
However, this is not a viable approach for an application that is running in
production.
• The Java™ Software Development Kit on HP-UX includes a free debugger, called
JDB. It is a simple command-line tool but it does allow the developer to insert
breakpoints on a per-thread basis, inspect the values of variables and attributes,
modify values, and restart the application. Because of its dbx-like user interface,
JDB is not particularly user-friendly. IDEs or stand-alone debugger tools are easier
Prepare HP-UX for Java™ deployment 7