private void checkClassName(String className) throws ClassNotFoundException {
// Do stricter checking of class name validity on deferred
// because if the name is invalid, it will
// never match a future loaded class, and we'll be silent
// about it.
StringTokenizer tokenizer = new StringTokenizer(className, ".");
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
// Each dot-separated piece must be a valid identifier
// and the first token can also be "*".
if (!isJavaIdentifier(token)
&& (tokenizer.hasMoreTokens() || !isAnonymousClassSuffix(token))) {
throw new ClassNotFoundException();
}
}
if (!classIsPlausible()) Env.noticeln("Warning: class %s does not seem to exist.", classId);
}
