This app gives error to me.
java.lang.UnsupportedClassVersionError: greenfoot/export/GreenfootScenarioViewer : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:217)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at sun.plugin2.applet.Plugin2ClassLoader.defineClassHelper(Plugin2ClassLoader.java:1014)
at sun.plugin2.applet.Plugin2ClassLoader.access$100(Plugin2ClassLoader.java:69)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Plugin2ClassLoader.java:991)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Plugin2ClassLoader.java:955)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:134)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:250)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:180)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:161)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:675)
at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3025)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1498)
at java.lang.Thread.run(Thread.java:662)
Exception: java.lang.UnsupportedClassVersionError: greenfoot/export/GreenfootScenarioViewer : Unsupported major.minor version 51.0
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