Could not find main class error

Question

My class path in environment variables are set to

C:\WINDOWS\system32;C:\Program Files (x86)\Java\jdk1.7.0_25\bin

I can compile fine, but I get an error when I try to run the java file.

Exception in thread "main" java.lang.UnsupportedClassVersionError: ASILogger : U
nsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
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$000(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)
Could not find the main class: ASILogger.  Program will exit.

Any ideas on what is going here?

Answer 1

Exception in thread "main" java.lang.UnsupportedClassVersionError: ASILogger : U
nsupported major.minor version 51.0

It seems you have compiled it against one version of java and running on another version. Read this tutorial may help.