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| Ans. Java.util.Map | ||||
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 Discuss Correct / Improve  java collections hashtable map  basic  rare | ||||
 Related Questions | ||||
 Difference between HashMap and Hashtable? | ||||
| Why HashTable has been deprecated ? | ||||
| Can we use null as a key for a map collection ? | ||||
| What is a Property class ? | ||||
| Can we add duplicate keys in a HashMap ? What will happen if we attempt to add duplicate values ? | ||||
| Which interface does java.util.Hashtable implement ? | ||||
| Which of the following is false ? | ||||
| Which of the collections allows null as the key ? a. HashTable b. HashMap c. TreeMap d. LinkedHashMap | ||||
| Difference between concurrentHashMap and HashTable ? | ||||
