what is the difference between HashMap and Hashtable
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Answer Posted / jyotsna gupta
1. Hashtable is synchronized where as hashmap is not.
2. Hashmap can contains null values as the keys and as well as values.But Hashtable dose not allow null values as keys and values.
3. Another difference is that iterator in the HashMap is fail-safe while the enumerator for the Hashtable isn't. If you change the map while iterating, you'll know.
4. Hashmap is faster than Hashtable.
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