1 package com.github.davidmoten.security; 2 3 final class Preconditions { 4 5 private Preconditions() { 6 // prevent instantiation 7 } 8 9 static void checkNotNull(Object o, String message) { 10 if (o == null) 11 throw new NullPointerException(message); 12 } 13 14 static void checkNotNull(Object o) { 15 checkNotNull(o, null); 16 } 17 18 }