FUNDAMENTALS OF COMPUTER

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DATABASE FUNDAMENTALS

BASICS OF BIG DATA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What will be the output of the following Java program?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() + “ “);elseSystem.out.print("EMPTY");} }
A
0
B
1
C
-1
D
EMPTY
Explanation: 

Detailed explanation-1: -Explanation: The output of the Java compiler is bytecode, which leads to the security and portability of the Java code.

Detailed explanation-2: -Returns true if the iteration has more elements. Returns the next element in the iteration. Removes from the underlying collection the last element returned by this iterator (optional operation).

Detailed explanation-3: -The iterator is commonly used to loop through the objects of a collection, read them, and remove them.

Detailed explanation-4: -Pick ONE OR MORE options Iterator is an interface Iterator is a member function of a class in the library Iterators are used to traverse through the elements of a collection Iterator is an abstract class used for iterating all the elements of the class Clear.

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