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Welcome to the Miscellaneous Topics in Java MCQs Page

Dive deep into the fascinating world of Miscellaneous Topics in Java with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Miscellaneous Topics in Java, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Miscellaneous Topics in Java, 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 Miscellaneous Topics in Java. 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 Miscellaneous Topics in Java. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Miscellaneous Topics in Java MCQs | Page 8 of 23

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Q71.
Which of the following is a best practice to measure time taken by a process for execution?
Discuss
Answer: (b).System.nanoTime()
Q72.
What one of the following is best practice to handle Null Pointer exception?

i) int noOfStudents = line.listStudents().count;

ii) int noOfStudents = getCountOfStudents(line);
    public int getCountOfStudents(List line)
    {
 if(line != null)
        {
  if(line.listOfStudents() != null)
                {
   return line.listOfStudents().size();
  }
 }
 throw new NullPointerException("List is empty");
    }
Discuss
Answer: (b).Option (ii)
Discuss
Answer: (c).The class should only contain those attribute and functionality which it should; hence keeping it short
Discuss
Answer: (a).variable names should be short
Q75.
Which is better in terms of performance for iterating an array?
Discuss
Answer: (b).for(int i=99; i>=0; iโ€“)
Discuss
Answer: (c).Generic methods are methods that introduce their own type parameters
Q77.
Which of these type parameters is used for a generic methods to return and accept any type of object?

a.

K

b.

N

c.

T

d.

V

Discuss
Answer: (c).T
Q78.
Which of these type parameters is used for a generic methods to return and accept a number?

a.

K

b.

N

c.

T

d.

V

Discuss
Answer: (b).N
Q79.
Which of the following allows us to call generic methods as a normal method?
Discuss
Answer: (a).Type Interface
Q80.
What is the output of this program?
    import java.util.*;
    public class genericstack <E>
    {
        Stack <E> stk = new Stack <E>();
 public void push(E obj) 
        {
            stk.push(obj);
 }
 public E pop() 
        {
            E obj = stk.pop();
     return obj;
 }
    }
    class Output
    {
        public static void main(String args[])
        {
            genericstack <String> gs = new genericstack<String>();
            gs.push("Hello");
            System.out.println(gs.pop());
        }
    }
Discuss
Answer: (b).Hello

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