NonStop Server for Java 7.0 Programmer's Reference

NOTE:
◦ For user thread limitation see Open System Services Programmer's Guide.
◦ Parallel and CMS GC are not supported on single core machines.
• NSJ7 continues to provide headless support
NSJ7 is a headless JVM that conforms to the Oracle's headless support standards regarding
Java Abstract Window Toolkit (AWT) classes and methods. For implementation-specific
information, see “Headless support” (page 34).
• Support for JPDA
JPDA consists of three interfaces designed for debuggers in development environments for
desktop systems. For more information, see Oracle Java documentation for JPDA.
Java HotSpot server virtual machine
NSJ7 implements the HotSpot server compiler and the runtime Java HotSpot virtual machine. The
HotSpot Server Java virtual machine provides a fast, reliable technology for the enterprise server
environment. For more information, see The Java HotSpot Server VM and Java Virtual Machines.
Java standard edition development kit (JDK)
NSJ7 consists of the following standard Java components (and the HP extensions described else
where in this manual):
• Java virtual machine (VM) based on the Java SE Runtime Environment (JRE) 7.0
• Core Packages of the Java™ SE Development Kit (JDK) 7.0
• Standard Java SE 7.0 tools as documented in the NonStop Server for Java 7.0 Tools Reference
Pages. All standard tools are supported, except graphical user interface (GUI) such as
appletviewer, policytool, and jconsole, and client-side tools such as javaws and
HtmlConverter. Experimental tools are not supported.
• JDK 7.0 API packages such as java, javax, and org packages described in the Java
Platform Standard Edition 7.0 API Specification.
Table 2 (page 15) lists the packages which NSJ7 supports according to Headless Support.
Table 2 List of packages with headless support on NSJ7
DescriptionPackage
Contains the classes used for creating user interfaces,
and for painting graphics and images.
java.awt and AWT-related packages
Defines a contract between user interface components
and technology that provides access to these
components.
javax.accessibility
Provides an API for capturing, processing, and
playing back audio and MIDI (Musical Instrument
javax.sound and Sound-related packages
Digital Interface) data. This API is supported by a
sound engine that provides high-quality audio mixing
and MIDI synthesis capabilities for the platform.
Provides a set of Java components, which works in
the similar mode on all platforms.
javax.swing and Swing-related packages
If a call is made to the code that depends on a keyboard, display, mouse, or sound processing,
NSJ7 throws a java.awt.HeadlessException.
Java HotSpot server virtual machine 15