

Objects and Collections - Programming
Q1: Which collection class allows you to access its elements by associating a key with an element's value, and provides synchronization?A java.util.SortedMap
B java.util.TreeMap
C java.util.TreeSet
D java.util.Hashtable
ANS:D - java.util.Hashtable Hashtable is the only class listed that provides synchronized methods. If you need synchronization great; otherwise, use HashMap, it's faster. |


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