Method containsKey

src/main/java/org/mapdb/BTreeMapJava.java:647–652

(Object key)

/* ----------------  Map API methods -------------- */

        @Override
        public boolean containsKey(Object key) {
            if (key == null) throw new NullPointerException();
            K k = (K)key;
            return inBounds(k) && m.containsKey(k);
        }

        @Override
        public V get(Object key) {