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Welcome to the java util MCQs Page

Dive deep into the fascinating world of java util with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of java util, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of java util, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.

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Check out the MCQs below to embark on an enriching journey through java util. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of java util. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

java util MCQs | Page 10 of 18

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Q91.
What is the output of this 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() + " ");
        }
    }
Discuss
Answer: (b).1 5 8 2
Q92.
Which of the below is not a subinterface of Queue?
Discuss
Answer: (b).BlockingEnque
Q93.
What is the remaining capacity of BlockingQueue whose intrinsic capacity is not defined?
Discuss
Answer: (a).Integer.MAX_VALUE
Q94.
PriorityQueue is thread safe.
Discuss
Answer: (a).True
Discuss
Answer: (c).dequeue() removes and returns the next item in line while peek() returns the next item in line
Discuss
Answer: (a).Stack is LIFO; Queue is FIFO
Discuss
Answer: (c).Front and read pointers point to the first element
Q98.
What is the correct method used to insert and delete items from the queue?
Discuss
Answer: (b).enqueue and dequeue
Q99.
Which data structure is used in Breadth First Traversal of a graph?
Discuss
Answer: (b).Queue
Q100.
Where does a new element be inserted in linked list implementation of a queue?
Discuss
Answer: (b).Tail of list

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