NonStop Server for Java 4.2 Programmer's Reference

environment variable so that the Java runtime can find the class named Cool.class, you would use

the following command to set and export the CLASSPATH environment variable and then run Java.

To run that application, you could use the following commands:

$ export CLASSPATH=/java/MyClasses

$ java utility.myapp.Cool

For further information about setting class path, see the documentation provided by Sun Microsystems

(http://java.sun.com/j2se/1.4/docs/tooldocs/solaris/classpath.html). Note that when applying that

documentation to the NonStop Server for Java 4, you should follow the instructions given for sh and

ksh instead of those for csh and tcsh. Instructions for the setenv and unsetenv commands do not

apply to the NonStop Server for Java 4.

JREHOME

The JREHOME shell variable is used by the Java runtime to determine where the core Java classes are

located. If you install NonStop Server for Java 4 in the standard location, you do not need to set up the

JREHOME shell variable because it has the default value of /usr/tandem/java/jre.

Note: If you are using NonStop Server for Java 1.4.2 version T2766H10^ABV or later, you

need not set the JREHOME variable because the Java classes will be located based on the

location of the Java executable of a given JDK installation.

If you install the NonStop Server for Java 4 in a location other than the /usr/tandem/java

directory, you must do the following:

Create a shell variable called JREHOME and set it to the location of the jre directory. For

example, if you installed the NonStop Server for Java 4 at /h/myjava instead of

/usr/tandem, do the following to create and set the JREHOME variable:

$ export JREHOME=/h/myjava/java/jre

You must create the JREHOME shell variable in each shell in which you plan to run java or one

of its tools. For this reason, it is a good idea to put a creation mechanism in the .profile file in

your home directory that is executed each time you log on to an OSS shell. See the Open System

Services User's Guide for information on how to set the path in your startup file.

Failure to specify the JREHOME variable may cause the JVM to fail to start, prompting the following

Java error message:

Can't find class java.lang.NoClassDefFoundError. (Wrong classpath?)

Alternatively, the JVM starts successfully but the jar files in the directory

/usr/tandem/java/jre are used instead of the files under the directory where NonStop Server for

Java 4 is installed. This can produce unpredictable results.