JRE

[Joy Conner]

How can I tell what version of JRE I have? I can see /opt/java1.4 in the filesystem structure. I need to have JRE 1.4.2 or higher installed.

[Steven E. Protter · Accepted solution]

Shalom,

swlist -l product | grep -i jre

You might also need to check for java or jdk. jdk delivers jre plus additional development capabilities.

SEP

[Patrick Wallek]

You can also ask the java executable.

# /opt/java1.4/bin/java -version

Will tell you the version you have.

Here is the output from one of my servers:

lmstat - Copyright (C) 1989-1997 Globetrotter Software, Inc.
Flexible License Manager status on Wed 7/21/2010 11:14

License server status (License file: /usr/local/flexlm/licenses/license.dat):

hquov01: license server UP (MASTER)

Vendor daemon status (on hquov01):

HPCUPLANGS: UP

[Patrick Wallek]

That output wasn't correct.

Here is the correct output from 'java -version':

$ /opt/java1.4/bin/java â version
java version "1.4.2.10"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2.10â 060112â 14:28)
Java HotSpot(TM) Server VM (build 1.4.2 1.4.2.10â 060112â 16:07â PA_RISC2.0 PA2.0 (aCC_AP), mixed mode)

[Joy Conner]

I don't have a binary that says java_version.

[Patrick Wallek]

The binary is not java_version.

The command is 'java -version', that is the word java, then a space, then '-version' (the dash, NOT the underscore).

[Joy Conner]

Thank you. That worked.