Which provides better performance for the insertion and removal from the middle of the list?
1.Vector
2.ArrayList
3.LinkedList
4. All of these
Posted Date:-2022-04-06 11:08:37
concurrentSkipListMap allows
1.one null key
2.many null value
3.all
4.None
Posted Date:-2022-04-06 11:04:09
In Spark Streaming the data can be from what all sources? All of the above
1.Kafka
2.Flume
3.Kinesis
4.All of the above
Posted Date:-2022-04-06 11:23:58
Iterator returned by ConcurrentHashMap on key, value and entry is?
1.Fail-fast
2.Fail-safe
3.none
4.All of the above
Posted Date:-2022-04-06 11:10:28
Spark is developed in which language R
1.Java
2.Scala
3.Python
4.R
Posted Date:-2022-04-06 11:22:53
The accuracy and efficiency of a HashMap can be guaranteed with
1. override equals method
2.Override hashCode method
3.None of these
4.All of these
Posted Date:-2022-04-06 11:04:53
The Comparable interface contains which called?
1.toCompare
2.compare
3.compareTo
4.compareWith
Posted Date:-2022-04-06 11:06:49
Which allows the removal of elements from a collection?
1.Enumeration
2.Iterator
3.Both
4.None
Posted Date:-2022-04-06 11:05:41
Which is best suited to a multi-threaded environment?
1.WeakHashMap
2.Hashtable
3.HashMap
4.ConcurrentHashMap
Posted Date:-2022-04-06 11:03:20
Which Map is synchronized?
1. Hashtable
2.ConcurrentSkipListMap
3.ConcurrentHashMap
4.All of these
Posted Date:-2022-04-06 11:01:11
Which of these class should be preferred to be used as a key in a HashMap?
1. String
2. Integer
3.Double
4.Any of these
Posted Date:-2022-04-06 11:09:26
Which of these is not an interface in the Collections Framework?
1.Collection
2.group
3.Set
4.List
Posted Date:-2022-04-06 11:02:11