Method ceilingKey

src/main/java/org/mapdb/BTreeMapJava.java:821–833

(K key)

        }

        @Override
        public K ceilingKey(K key) {
            if(key==null) throw new NullPointerException();
            if(tooHigh(key)) return null;

            if(tooLow(key)){
                return firstKey2();
            }

            K ret = m.ceilingKey(key);
            if(ret!=null && tooHigh(ret)) return null;
            return ret;
        }

        @Override
        public Entry<K, V> higherEntry(K key) {