HashTable Sınıfı

Giriş
Açıklaması şöyle

As of the Java 2 platform v1.2, this class was retrofitted to implement the Map interface, making it a member of the Java Collections Framework. Unlike the new collection implementations, Hashtable is synchronized. If a thread-safe implementation is not needed, it is recommended to use HashMap in place of Hashtable. If a thread-safe highly-concurrent implementation is desired, then it is recommended to use ConcurrentHashMap in place of Hashtable.

Hash metodu
Şöyledir.

hash = key.hashCode();
index = (hash & 0x7FFFFFFF) % tab.length;