Java System Toolkit (JST) is a collection of Java classes and native libraries (at this time for Windows 95/NT only) that provides a simple Java programming interface for access to some commonly requested system features. JST 1.2 supports:
Installation
JDK/JRE 1.1.x
Add lib\jst.jar to your CLASSPATH environment variable. Binary files from the lib directory should be placed in either the same directory where jst.jar is located or in appropriate ..\bin or ..\lib directory. Keep javai.dll (shipped with Java 1.1.x) in the same directory with jst.jar.
JDK/JRE 1.2 and 1.3
Add lib\jst.jar to your CLASSPATH environment variable. In addition, add lib directory to your PATH.
In order to prepare environment for Java service execution you need to add path to the jvm.dll library (e.g. "C:\jre1.2\bin\classic" ) to the system's PATH environment variable. You can do this logged in as a system administrator from the Control Panel -> System -> Environment panel.