What is diffrence between HashTable and HashMap

What  is   difference  between  HashTable  and HashMap.   

     

HashTable	HashMap
Methods of Hashtable are synchronized by default	Methods are not synchronized by default
Does not permit null values (trying to add, throws NullPointerException)	Permits null values (either key or value)
Enumeration interface is used for iterating keys	Iterator is used for iterating the keys
Enumerator is not fail-fast	Iterator is fail-fast
Safe for multithreaded applications	Better for non-threaded applications
Low performance due to synchronization	High performance
Hashtable is serialized	HashMap is not serialized