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Java - Test Questions on 'Deprecate' - 3 questions found
Which of the following is false ?
Reference
Core Java
HashMap came before HashTable.
HashMap allows null values whereas Hashtable doesn’t allow null values.
HashTable and HashMap allow Key-Value pairs.
Hashtable is synchronized whereas HashMap is not.
map
hashmap
hashtable
collection
java
Which of the collections allows null as the key ?
Core Java
HashTable
HashMap
TreeMap
LinkedHashMap
java
collections
map
Which keyword is used to provide explicit access of a code block to single thread ?
Reference
Core Java
Transient
Final
Explicit
Synchronized
java
threads
multithreading
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