Method firstKey

vm/JavaAPI/src/java/util/TreeMap.java:692–708

()

        }

        public K firstKey() {
            if (backingMap.size > 0 && !(startKey.equals(endKey))) {
                if (!hasStart) {
                    Node<K, V> node = minimum(backingMap.root);
                    if (node != null
                            && checkUpperBound(node.keys[node.left_idx])) {
                        return node.keys[node.left_idx];
                    }
                } else {
                    setFirstKey();
                    if (firstKeyNode != null) {
                        return firstKeyNode.keys[firstKeyIndex];
                    }
                }
            }
            throw new NoSuchElementException();
        }

        @SuppressWarnings("unchecked")
        @Override