code: private static Class<?> getClassFromInternalName(String internalName) {
      try {
        return Class.forName(internalName.replace('/', '.'));
      } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
      }
    }
docs: Take an internal name and return a java.lang.Class instance that
  represents it.
  
  For example, given "java/lang/Object", returns the equivalent of
  Class.forName("java.lang.Object"), but also handles exceptions.