NoClassDefFoundError vs ClassNotFoundException in Java
NoClassDefFoundError and ClassNotFoundException look interchangeable and are not. Read the frames, find the real cause, and stop the repeat throws.
class-loading
2 PostsJava UnsupportedClassVersionError: Class File Version F
java.lang.UnsupportedClassVersionError means your bytecode is newer than your JVM. Decode the class file version numbers and fix the mismatch for good.