Replacement for obsolete Hashtable class in Java

Question

When I tried to use the hashtable class, Netbeans gave me an error saying:

While still supported, these classes were made obsolete by the JDK1.2 colle

Answer 1

You should use HashMap, but it is not designed for concurrent environments, where you may use ConcurrentHashMap.

OR

Map myMap = Collections.synchronizedMap(/*any map instance*/);