which of these methods can be used to move to next element in a collection?

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Which of these methods can be used to move to next element

Which of these methods can be used to move to next element in a collection?

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Which of these methods can be used to move to next element in a collection?

hasNext() shuffle() move() next() None of these

Correct Option: D

next()

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Which of these methods can be used to move to next element in a collection?

Which of these methods can be used to move to next element in a collection? (a) next() (b) move() (c) shuffle() (d) hasNext()

Which of these methods can be used to move to next element in a collection?

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Iterators

This section of our 1000+ Java MCQs focuses on iterators of Java Programming Language. 1. Which of these return type of hasNext() method of an iterator? a) Integer b) Double c) Boolean d) Collections Object 2. Which of these methods is used to obtain an iterator to the start of collection? a) start() b) begin() ... Read more

Java Questions & Answers – Iterators

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This section of our 1000+ Java MCQs focuses on iterators of Java Programming Language.

1. Which of these return type of hasNext() method of an iterator?

a) Integer b) Double c) Boolean

d) Collections Object

View Answer

2. Which of these methods is used to obtain an iterator to the start of collection?

a) start() b) begin() c) iteratorSet() d) iterator() View Answer

3. Which of these methods can be used to move to next element in a collection?

a) next() b) move() c) shuffle() d) hasNext() View Answer

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4. Which of these iterators can be used only with List?

a) Setiterator b) ListIterator c) Literator

d) None of the mentioned

View Answer

5. Which of these is a method of ListIterator used to obtain index of previous element?

a) previous() b) previousIndex() c) back() d) goBack() View Answer

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6. Which of these exceptions is thrown by remover() method?

a) IOException b) SystemException

c) ObjectNotFoundExeception

d) IllegalStateException

View Answer

7. What will be the output of the following Java program?

advertisement import java.util.*;

class Collection_iterators

{

public static void main(String args[])

{

ListIterator a = list.listIterator();

if(a.previousIndex()! = -1)

while(a.hasNext())

System.out.print(a.next() + " ");

else

System.out.print("EMPTY");

} } a) 0 b) 1 c) -1 d) EMPTY View Answer

8. What will be the output of the following Java program?

import java.util.*;

class Collection_iterators

{

public static void main(String args[])

{

LinkedList list = new LinkedList();

list.add(new Integer(2));

list.add(new Integer(8));

list.add(new Integer(5));

list.add(new Integer(1));

Iterator i = list.iterator();

Collections.reverse(list);

while(i.hasNext())

System.out.print(i.next() + " ");

} } a) 2 8 5 1 b) 1 5 8 2 c) 2 d) 2 1 8 5 View Answer

9. What will be the output of the following Java program?

import java.util.*;

class Collection_iterators

{

public static void main(String args[])

{

LinkedList list = new LinkedList();

list.add(new Integer(2));

list.add(new Integer(8));

list.add(new Integer(5));

list.add(new Integer(1));

Iterator i = list.iterator();

Collections.reverse(list);

Collections.sort(list);

while(i.hasNext())

System.out.print(i.next() + " ");

} } a) 2 8 5 1 b) 1 5 8 2 c) 1 2 5 8 d) 2 1 8 5 View Answer

10. What will be the output of the following Java program?

import java.util.*;

class Collection_iterators

{

public static void main(String args[])

{

LinkedList list = new LinkedList();

list.add(new Integer(2));

list.add(new Integer(8));

list.add(new Integer(5));

list.add(new Integer(1));

Iterator i = list.iterator();

Collections.reverse(list);

Collections.shuffle(list);

i.next(); i.remove(); while(i.hasNext())

System.out.print(i.next() + " ");

} } a) 2 8 5 b) 2 1 8 c) 2 5 8 d) 8 5 1 View Answer

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which of these methods can be used to move to next element in a collection?

Mohammed

Which of these methods can be used to move to next element

Collections

JAVA Programming

Correct Option: D

Which of these methods can be used to move to next element in a collection?

Which of these methods can be used to move to next element in a collection?

1 Answer

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