Programming In Java | Week 2

3 months ago
Posted by PROGIEZ
9 minutes

Session: JAN-APR 2024

Course name: Programming In Java

Course Link: Click Here

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These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q1. In Java programming an object can take many forms. This feature is called _______.
a. Abstraction
b. Polymorphism
c. Encapsulation
d. Inheritance

Answer: b. Polymorphism

Q2. Which of the following is a valid declaration of an object of class, say NPTEL?
a. NPTEL obj = new NPTEL();
b. NPTEL obj = new NPTEL;
c. obj = new NPTEL();
d. new NPTEL obj;

Answer: a. NPTEL obj = new NPTEL();

Q3. A default constructor_______________________.
a. has no arguments
b. has no return type
c. has one argument but no return type
d. has two arguments

Answer: a. has no arguments

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These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q4. A top-level class may have which one of the following access modifiers?
a. package
b. private
c. protected
d. public

Answer: d. public

Q5. Integer in Java is a\an __________.
a. Adapter class
b. Inner class
c. Not a class
d. Wrapper class

Answer: d. Wrapper class

Q6. What is true about the new operator?
a. returns a pointer to a variable
b. creates a variable called new
c. obtains memory for a new variable
d. tells how much memory is available

Answer: c. obtains memory for a new variable

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These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q7. Which one is not supported by OOP?
a. Abstraction
b. Polymorphism
c. Encapsulation
d. Global variables

Answer: d. Global variables

Q8. Which of the following modifiers can be used to disallow a method from being overridden?
a. final
b. transient
c. volatile
d. static

Answer: a. final

Q9. Consider the following code segment
Identify the line number(s) where there is/are error(s) in the above code.
a. 1
b. 2
c. 3
d. 4 and 5

Answer: b. 2

Q10. Which of the following is TRUE about print() and println() methods?
a. print() prints in a single line only and multiple lines cannot be printed in any way.
b. println() prints and then appends a line break.
c. println() prints in a single line only and multiple lines cannot be printed.
d. print() prints and then appends a line break.

Answer: b. println() prints and then appends a line break.

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These are NPTEL Programming In Java Week 2 Assignment 2 Answers

More Weeks of Programming In Java: Click here

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Session: JULY-DEC 2023

Course Name: Programming In Java

Course Link: Click Here

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Programming Assignment

Question 1
Complete the code segment to call the method print() of class Student first and then call print() method of class School.

Solution:

    Student student = new Student();
    
    student.print();
    
    School school = new School();
    
    school.print();

Question 2
Complete the code segment to call the method print() of class given class Printer to print the following.
——————————–
Hi! I am class STUDENT
Hi! I class SCHOOL.
——————————–

Solution:

    Printer p = new Printer();
    
    p.print("Hi! I am class STUDENT");
    p.print();

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 3
Complete the code segment to call print() method of class Question by creating a method named ‘studentMethod()’.

Solution:

void studentMethod(){
    
    print(this);
    }

Question 4
Complete the code segment to call default constructor first and then any other constructor in the class.

Solution:

class Answer{
	
	Answer(){
		System.out.println("You got nothing.");
	}
	
	Answer(int marks, String type){
	
		this();
	
		System.out.print("You got "+marks+" for an "+ type);
	}
}

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 5
Complete the code segment to debug / complete the program which is intended to print ‘NPTEL JAVA’.

Solution:

String nptel,space,java;
	
	nptel="NPTEL";
	space=" ";
	java="JAVA";

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

More Weeks of Programming In Java: Click here

More Nptel Courses: Click here

Session: JAN-APR 2023

Course Name: Programming in Java

Course Link: Click Here

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Week 3: Click Here

Q1. Following is a program given for this question.
What will be the output of the above program?
a. 22221010
b. 12222101
c. 22101010
d. 22221012

Answer: a. 22221010

Q2. When an array is passed to a method, what value does the method receive?
a. Reference of the array.
b. Copy of the array.
c. First element in the array.
d. Length of the array.

Answer: a. Reference of the array.

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q3. Following is a program given for this question.
What will be the output of the above program?
a. 28
b. -29
c. 30
d. -31

Answer: c. 30

Q4. How many bits are needed for float and double in Java, respectively?
a. 32 and 64
b. 32 and 32
c. 64 and 64
d. 64 and 32

Answer: a. 32 and 64

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q5. Which of the following is a valid automatic type conversion in Java?
a. short to byte
b. float to long
c. int to short
d. int to long

Answer: d. int to long

Q6. Consider the following program and identify the output.
a. 5
b. 10
c. 50
d. Compilation error

Answer: d. Compilation error

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q7. Which of the following is a valid declaration of an object of class say, Student?
a. Student obj = new Student;
b. Student obj = new Student();
c. obj = new Student();
d. new Student obj;

Answer: b. Student obj = new Student();

Q8. What is the output of the following program?
a. 210
b. 120
c. 012
d. 201

Answer: c. 012

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q9. Consider the following piece of code.
Which of the following option is the output of the above program?
a. java
b. npteljava
c. nptel java
d. nptel

Answer: d. nptel

Q10. What is the output of the following program?
a. 60
b. 3011
c. 33
d. Compilation error

Answer: d. Compilation error

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Programming In Java Programming Assignment Solution

Question 1

Complete the code segment to call the method print() of class School first and then call print() method of class Student.

Solution:

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 2

Complete the code segment to call the method print() of class given class Printer to print the following.
——————————–
Hi! I am class SCHOOL
Hi! I class STUDENT.
——————————–

Solution:

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 3

Complete the code segment tocall print() method of class Question by creating a method named ‘student()’.

Solution:

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 4

Complete the code segment to call default constructor first and then any other constructor in the class.

Solution:

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Question 5

Complete the code segment to debug / complete the program which is intended to print ‘NPTEL JAVA’.

Solution:

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

More Weeks of Programming In Java: Click Here

Session: JULY-DEC 2022

Q1. What is the output of the following program?

a) 88
b) 8010
c) 64
d) 810

Answer: c) 64

Q2. Which of the following is generate API documentation in HTML format from Java source code?

a) javac
b) javadoc
c) javap
d) java

Answer: b) javadoc

Q3. Following is a program given for this question.

What will be the output of the above program?

a) javanptel
b) npteljava
c) janjavanptel
d) jannpteljava

Answer: b) npteljava

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q4. What will happen during the execution of the following code for the command line input?

Consider the following input on command line and select the options with the correct output(s).

Input:
A: “jan java nptel”
B: 1 2 3

a) A : jannptel
javanptel
nptelnptel
b) A : jan java nptel jan java nptel
c) B : 11
21
31
d) B : 1 2 3 1

Answer: b), c)

Q5. Which of the following is/are TRUE about print() and println() methods?

a) print() prints in a single line only and multiple lines cannot be printed in any way.
b) print() prints and then appends a line break.
c) println() prints in a single line only and multiple lines cannot be printed.
d) println() prints and then appends a line break.

Answer: d) println() prints and then appends a line break.

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q6. What was the initial name of Java when it was first developed for embedded systems?

a) Greentalk
b) Oak
c) Java
d) Javac

Answer: a) Greentalk

Q7. Which of the following is a valid declaration of an object of class, say Foo?

a) Foo obj = new Foo;
b) obj = new Foo();
c) Foo obj = new Foo();
d) new Foo obj;

Answer: c) Foo obj = new Foo();

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q8. Following is a program given for this question.

What will be the output of the above program?

a) 0
b) 1
c) false
d) true

Answer: c) false

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q9. Which of the following can be used to take input from user during the execution of a program?

a) Using the string array provided as a parameter to the main method.
b) getText() method can be used to get user input from the command line.
c) Scanner class can be used by passing the predefined object System.in
d) Once the execution starts, there is no way to provide user input.

Answer: c) Scanner class can be used by passing the predefined object System.in

Q10. What is the output of the following program?

a) 14
b) 12
c) 15
d) 17

Answer: d) 17

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Programming in Java NPTEL Week 2 Programming Assignment Solutions

Q1. Complete the code segment to call the method print() of class Student first and then call print() method of class School.

Sol:-

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q2. Complete the code segment to call the method print() of class given class Printer to print the following.
——————————–
Hi! I am class STUDENT
Hi! I class SCHOOL.
——————————–

Sol:-

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q3. Complete the code segment tocall print() method of class Question by creating a method named ‘studentMethod()’.

Sol:-

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q4. Complete the code segment to call default constructor first and then any other constructor in the class.

Sol:- 

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

Q5. Complete the code segment to debug / complete the program which is intended to print ‘NPTEL JAVA’.

Sol:-

//Code

These are NPTEL Programming In Java Week 2 Assignment 2 Answers

These are NPTEL Programming In Java Week 2 Assignment 2 Answers
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