Can't set a .jar file to open with java or openjdk

[Anon6]

I've been having a lot of problems with this. I have all of the software I need as far as I know and the .jar file works flawless on windows. I go to open with on the file (which has execute as program enabled) and there is no open with java run time or openjdk. I tried to run it with run software and nothing happens. I've tried doing java -jar [jar file name] and I just get this:

Exception in thread "main" java.lang.UnsupportedClassVersionError: Client : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :800)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:449)
at java.net.URLClassLoader.access$100(URLClassLoader. java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 25)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 58)
at sun.launcher.LauncherHelper.checkAndLoadMain(Launc herHelper.java:482)

I've literally downloaded almost every java package on the installer with the hopes something would work, but nope. Please tell me what I am missing installation wise or please tell me how I can open this .jar file with jre or openjdk. Thanks in advance.

java -version results
java version "1.7.0_79"
OpenJDK Runtime Environment (IcedTea 2.5.6) (7u79-2.5.6-1~deb8u1)
OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode)

[Anon6]

Ok so I ran the command 'dpkg --configure -a' and deleted and redownloaded the .jar file and now the command java -jar [jarfile name] works perfectly to open it. I hope this helps someone in the future ^.^

@Thank you rAWjAW for allowing me to post this question, although I didn't receive any responses it gave me the motivation to keep messing around with it while I waited xD.