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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 ?

asked Jul 15, 2013 at 11:28
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    Can you please show us the exact error that is shown to you? Commented Jul 15, 2013 at 11:29
  • What is the exact error message? Maybe you have more than one JDK installed. Commented Jul 15, 2013 at 11:29
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    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. 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. Commented Jul 15, 2013 at 13:06

1 Answer 1

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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
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