Which Collection classes should i practice for OCPJP(1Z0-819 -J)

[Pradhyuman Singh Mandloi]

As their are many classes in Collection framework which classes should I practice ......

I don't have much time to read which classes should i practice

Please guide me!!

Thanks in advance..!!

[Mikalai Zaikin]

You can start with these:

java.lang.Iterable;

java.util.Arrays;
java.util.Collection;
java.util.Collections;
java.util.Comparator;

java.util.List;
java.util.ArrayList;
java.util.concurrent.CopyOnWriteArrayList;

java.util.Set;
java.util.SortedSet;
java.util.TreeSet;
java.util.HashSet;
java.util.concurrent.CopyOnWriteArraySet;


java.util.Map;
java.util.HashMap;

java.util.Deque;
java.util.ArrayDeque;

java.util.Queue;
java.util.PriorityQueue;

[Campbell Ritchie]

Pradhyuman Singh Mandloi wrote:As their are many classes in Collection framework which classes should I practice ......

Yes. Mikalai has already shown you some. Look at Java™ Tutorials section, too.

I don't have much time to read which classes should i practice  . . .

You should make sure to take enough time to practise; otherwise you might do well to delay sitting the exam.