srishailam

• Jul 22nd, 2011

 

these are collection classes, which are used to store the different objects in one object .Hashmap is synchronized, but Hashtable not synchronized . when we are working on a single thread Hashtable gives more performance than Hashmap.

amitkaushik8

 Profile Answers by amitkaushik8 

• Jul 23rd, 2011

 

HashMap is Faster then Hashtable because Hashtable has synchronized method so use Hashtable when you want synchronization other wise prefer HashMap

sivabalan

• Jul 25th, 2011

 

Common thing: Both will store Key and Value pairs.
As per HashMap, Its not synchronized. Key and Value will allow null values.
As per HashTable, Its synchronized. Key will not allow null values.

Naga Sudheer

 Profile Answers by Naga Sudheer 

• Jul 28th, 2011

 

Hashmap is not synchronized where as HashTable is synchronized. HashMap is faster than HashTable at the cost of synchronization and there is no point of null and value pairs in HashTable where as in HashMap it exists..so HashMap is faster than HashTable

sampra

 Profile Answers by sampra 

• Mar 13th, 2012

 

HashMap is Faster then Hashtable because Hashtable has synchronized method so use Hashtable when you want synchronization other wise prefer HashMap