Getting value from an array

get.java

public V get(Object key) {
  final int hashCodeForKey = hash(key);
  final Node<K,V> nodeByKey = getNode(hashCodeForKey, key);
  return nodeByKey == null ? null : nodeByKey.value;
}

private Node<K,V> getNode(int hashCodeKey, Object keySearch) {
  Node<K,V> current;
  Node<K,V> next;
  K keyForNode;

  if (hashTable != null && hashTable.length > 0) {
    int indexByHashCodeKey = (hashTable.length - 1) & hashCodeKey;
    current = hashTable[indexByHashCodeKey];
    if(current != null) {
      if (current.hashCodeKey == hashCodeKey) {
        keyForNode = current.key;
        if (keyForNode == keySearch || (keySearch != null && keySearch.equals(keyForNode))) {
          return current;
        }
      }
      next = current.next;
      if (next != null) {
        do {
          if (next.hashCodeKey == hashCodeKey) {
            keyForNode = next.key;
            if (keyForNode == keySearch || (keySearch != null && keySearch.equals(keyForNode))) {
              return next;
            }
          }
        }
        while ((next = next.next) != null);
      }
    }
  }
  return null;
}