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EclipseJDT Plug-in Developer Guide
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Java VM Install Types


This extension point represents different kinds of Java runtime environments and development kits. Each extension must implement org.eclipse.jdt.launching.IVMInstallType. An IVMInstallType is responsible for creating and managing a set of instances of its corresponding IVMInstall class. Through creating different IVMInstall objects, an IVMInstallType allows for specific behaviour for various Java VMs. A UI for managing IVMInstalls is provided by the Java Debug UI plug-in.

Configuration Markup:

<!ELEMENT extension ( vmInstallType*)>

<!ATTLIST extension





  • point - a fully qualified identifier of the target extension point
  • id - an optional identifier of the extension instance
  • name - an optional name of the extension instance

<!ELEMENT vmInstallType EMPTY>

<!ATTLIST vmInstallType




  • id - a unique identifier that can be used to reference this IVMInstallType.
  • class - the class that implements this VM install type. The class must implement IVMInstallType.

The following is an example of an IVMInstallType for the J9 VM:

 <extension point=


Supplied Implementation:
Abstract implementations of IVMInstall and IVMInstallType are provided. The Java development tooling defines a VM install type for the standard 1.1.* level JRE, and an install type for JREs conforming to standard command line options (1.2, 1.3, 1.4, 5.0, 6.0, and 7.0 level JREs). As well an install type is provided for JREs defined by an execution environment description file.

Copyright (c) 2000, 2005 IBM Corporation and others.
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at

  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire