java - Jar File is running in my computer but not Running in another computer -

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this question has answer here:

i created jar file in laptop , runs fine in computer without trouble when use same in friend's laptop shows , exception , file not run. it's still laptop. what's reason?

name of jar =blueserver.jar has 1 class.
classname=server.java 1 external library used name=bluecove.jar used accessing bluetooth java. ide used=eclipse used eclipse creating jar,already checked option "pacakage required libraries generated jar"

this error came while try run same jar in computer....

java -jar blueserver.jar exception in thread "main" java.lang.unsupportedclassversionerror: server : unsupported major.minor version 51.0

    @ java.lang.classloader.defineclass1(native method)     @ java.lang.classloader.defineclass(classloader.java:620)     @ java.security.secureclassloader.defineclass(secureclassloader.java:124)     @ java.net.urlclassloader.defineclass(urlclassloader.java:260)     @ java.net.urlclassloader.access$000(urlclassloader.java:56)     @ java.net.urlclassloader$1.run(urlclassloader.java:195)     @ java.security.accesscontroller.doprivileged(native method)     @ java.net.urlclassloader.findclass(urlclassloader.java:188)     @ java.lang.classloader.loadclass(classloader.java:306)     @ java.lang.classloader.loadclass(classloader.java:251)     @ java.lang.classloader.loadclassinternal(classloader.java:319)     @ java.lang.class.forname0(native method)     @ java.lang.class.forname(class.java:247)     @ org.eclipse.jdt.internal.jarinjarloader.jarrsrcloader.main(jarrsrcloader.java:56)

it problem version of used jre. see this post details. try

java --version

on both machines.


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