Java JMX Nagios Plugin

I received the following error when tried check_jmx from this link https://github.com/atamariya/nagios-check-jmx .

[root@sc-nagiosxi plugin]# ./check_jmx -help
Exception in thread “main” java.lang.UnsupportedClassVersionError: org/nagios/JMXQuery : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
[root@sc-nagiosxi plugin]# java -version
java version “1.7.0_67”
Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

The plugin link here for download (check_jmx.tgz version 3) works but doesn’t show any graph or trend data.