在Java中获取版本错误

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 ?

Answer 1

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