LIST

The collection

• extends Collections class

• extends Iterable interface

• implements Serializable interface

• implements Traversable interface

The collection is a ____________

• framework and interface

• framework and class

• only interface

• only class

List, Set and Queue __________ Collection.

• extends

• implements

• both of the above

• none of the above

Which among the following maintains the insertion order of the elements?

• List

• Set

• Map

• All of these

Which of the following is legacy class in java?

Arraylist

Vector

Hashtable

Only B & C

• A

• B

• C

• D

Iterator and ListIterator can traverse over

lists

sets

maps

All of the these

• A

• B

• C

• D

Arraylist, Linkedlist and vector are all ___________

interface

enums

class

Depends on implementation

• A

• B

• C

• D

Which of the following is true?

Iterator can traverse in both forward and backward directions.

ListIterator can traverse in both forward and backward directions.

Only 1

Only 2

Both 1 & 2

None of the these

• A

• B

• C

• D

The ________ interface is the root interface for all the collection classes.

Collection

Collections

Iterator

Iterable

• A

• B

• C

• D

The _______ package contains all the classes and interfaces for the Collection framework.

java.lang

java.util

both a & b

none

• A

• B

• C

• D