Method higherKey

vm/JavaAPI/src/java/util/TreeMap.java:5318–5321

{@inheritDoc} @see java.util.NavigableMap#higherKey(Object) @since 1.6

(K key)

     * @since 1.6
     */
    public K higherKey(K key) {
        Map.Entry<K, V> entry = higherEntry(key);
        return (null == entry) ? null : entry.getKey();
    }

    /**
     * {@inheritDoc}