Invalid Java installation: No version could be obtained Post: 303003118

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Top Forums Shell Programming and Scripting Invalid Java installation: No version could be obtained Post 303003118 by hicksd8 on Thursday 7th of September 2017 05:25:22 PM

09-07-2017

Moderator

Check your application documentation to see where it expects to find Java.

Many Java applications expect Java to be located in a specific directory, for example '/usr/java', '/usr/bin/java', or wherever.

If you (for example):

Code:

# ls -l /usr/java

it will show you that this directory is symbolically linked to the actual Java directory, V1.6, V1.8, or whatever.

When you installed 1.8 the 1.6 directory was not removed so you have two versions to choose from. You might well need to change the link from the 1.6 directory to point to the 1.8 directory.

Many applications do not utilise $JAVA_HOME but expect to find Java in a specific directory. Find out from the application documentation what path that is.

---------- Post updated at 10:24 PM ---------- Previous update was at 10:19 PM ----------

Another thought is, does the application definitely need 64-bit Java or is it looking for 32-bit Java?

---------- Post updated at 10:25 PM ---------- Previous update was at 10:24 PM ----------

Perhaps you ought to post your hardware type, OS and version

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LEARN ABOUT DEBIAN

airport-linkmon

AIRPORT-LINKMON(1)					      General Commands Manual						AIRPORT-LINKMON(1)

NAME

       airport-linkmon	-  Wireless link quality monitor for the original Apple AirPort Base Station ("Graphite") and the Lucent RG-1000 base sta-
       tion

SYNOPSIS

       airport-linkmon

DESCRIPTION

       airport-linkmon allows you to measure the signal strength and noise on the wireless links between your  base  station  and  its	associated
       wireless hosts.

OPTIONS

       airport-linkmon	accepts  no  command-line  options.  airport-linkmon  is  a  wrapper script around the LinkMonitor.jar jar file located in
       /usr/share/java/airport-utils.

       You can set the JAVACMD environment variable to use a specific JVM instead of the one chosen by the wrapper script. Set the DEBUG  environ-
       ment variable to 1 to get the debug output from the wrapper script.

ENVIRONMENT VARIABLES

       DEBUG  Set this variable to 1 to get the debug output from the wrapper script.

       JAVACMD
	      The  full  path  to  the	Java  Virtual  Machine	to  use.  By  default,	the  wrapper  uses JAVACMD; if it is not set, it looks for
	      JAVA_BINDIR/java, then for JAVA_HOME/bin/java before looking for a java executable in the PATH. In the latter case, the JVM used can
	      be configured using the Debian alternatives system (see update-alternatives(8)).

       JAVA_HOME
	      The full path where your JDK/JRE is installed.

       JAVA_BINDIR
	      The full path to the directory where the java executable is located.

       JAVA_ARGS
	      Extra command-line arguments to be passed to the Java Virtual Machine.

AUTHOR

       airport-linkmon was written by Jon Sevy <jsevy@cs.drexel.edu>.

       This manual page was written by Julien BLACHE <jblache@debian.org>, for the Debian project (but may be used by others).

								   May 20, 2006 						AIRPORT-LINKMON(1)