While the Hashtable was part of the initial Java release over two decades ago, the HashMap is the correct key-value store to use today. One key HashMap vs. Hashtable difference is the fact that the ...

1) Implementation: HashMap implements Map interface and HashSet implements Set interface. 2) Duplicates: HashSet does’t allow duplicate values. HashMap store key, value pairs and it does not allow ...

Get hold of all the important Java Foundation and Collections concepts with ... please refer Complete Interview Preparation Course. It is kind of like HashMap but is synchronized. Hashtable stores key ...

Both HashMap and Hashtable have implemented Map interface, major difference between them is HashMap methods are not synchronize that's why HashMap access speed is better. although you can make HashMap ...