Getting a version error in java

Question

Usually the version error in java occurs due to a package being compiled in a higher version and being run on a lower version of java ( this is my understanding, please correct if I am wrong ) but I have the same version of java installed on 2 nodes but still getting a version error when the package is compiled on one of the nodes and run on another node. The jdk used for installation is "jdk-7u17-linux-i586.tar.gz". Both the machines are running 32-bit Linux(Ubuntu) OS.

Any idea why this could be happening ?

Can you please show us the exact error that is shown to you? — Uwe Plonus
– Uwe Plonus, Commented Jul 15, 2013 at 11:29
What is the exact error message? Maybe you have more than one JDK installed. — m0skit0
– m0skit0, Commented Jul 15, 2013 at 11:29
This kind of errors usually shows up when multiple JREs/JDKs are installed and you are actually running another one. Check java -version on both machines and see if you have OpenJDK or GCJ installed. — Grzegorz Żur
– Grzegorz Żur, Commented Jul 15, 2013 at 11:31
Which version do the application servers running use? Maybe configured differently? Maybe shown in the boot log too, before the app is launched. — Joop Eggen
– Joop Eggen, Commented Jul 15, 2013 at 13:06

ItachiUchiha · Accepted Answer · 2013-07-15 12:30:51Z

4

You can check for multiple installation of JRE/JDK.

update-java-alternatives -l

Shows you all the Java versions you have installed.

java -showversion

Shows you the java version you are using and help.

java -version

Java Version only

answered Jul 15, 2013 at 12:30

ItachiUchiha

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