Method headMap

vm/JavaAPI/src/java/util/TreeMap.java:5522–5526

{@inheritDoc} @see java.util.NavigableMap#headMap(Object, boolean) @since 1.6

(K end, boolean inclusive)

     * @since 1.6
     */
    public NavigableMap<K, V> headMap(K end, boolean inclusive) {
        // check for error
        keyCompare(end, end);
        return new AscendingSubMap<K, V>(this, end, inclusive);
    }

    /**
     * {@inheritDoc}