[BUG] Arch Linux Knuddels App Exception

user@computer ./knuddels.sh
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/knuddels/kjupdate/MainStappKj : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.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$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)

user@computer uname -a
Linux tuxgaming 4.4.16-1-lts #1 SMP Thu Jul 28 16:21:18 CEST 2016 x86_64 GNU/Linux
user@computer pacman -Q | grep "jre"
jre 8u102-1
jre7-openjdk 7.u111_2.6.7-1
jre7-openjdk-headless 7.u111_2.6.7-1
jreen 1.2.1-1