Correct implementation of initialization-on-demand holder idiom

Question

I have got two versions of \"Initialization-on-demand holder idiom\":

1. http://en.wikipedia.org/wiki/Initialization-on-demand_holder_idiom
2. http://en.wik

Answer 1

private static class LazyHolder {
    $VISIBILITY static final Singleton INSTANCE = new Singleton();

From a consumer's point of view it does not really matter if $VISIBILITY is public or private because the LazyHolder type is private. The variable is only accessible via the static method in both cases.