nptel java week 3 assignment answers 2023

Programming in Java NPTEL Assignment Answers of Week 3 (2023)

In this article, you will get NPTEL Assignment Answers of Week 3 (2023) of the course Programming in Java

1. Which of the following statement(s) is/are correct about the constructor? a. Constructors cannot be synchronized in Java. b. Java does not provide a default copy constructor. c. A constructor cannot be overloaded. d. “this” or “super” can be used in a constructor.

Answer: a, b, d

2. Which of the following statement(s) is/are true? a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. b. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it. c. A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in. d. You cannot declare new methods in the subclass that are not in the superclass.

Answer: a, b, c

3. Consider the following piece of code.

Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully. a. abstract b. final c. default d. public

Answer: b. final and d. public

4. How many instances of abstract class can be created? a. 0 b. 1 c. 2 d. Multiple

Answer: a. 0

5. Structuring a Java class such that only methods within the class can access its instance variables is referred to as ______. a. object orientation b. inheritance c. platform independence d. encapsulation

Answer: d. encapsulation

6. Which of the following statement(s) is/are true? a. A final method cannot be overridden in a subclass. b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c. Class methods cannot use this keyword as there is no instance for this to refer to. d. A final method can be overridden in a subclass.

7. Consider the following piece of code.

Which of the following is the output of the above program? a. Java b. There will be a compile-time error. c. JavaJava. d. The program will give a runtime error.

Answer: b. There will be a compile-time error.

8. Consider the following program.

What is the output of the above program? a. java b. ring c. r min d. gram

Answer: b. ring

9. Which of the following statement(s) is/are False? a. Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation. b. Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword. c. The term “class variable” is another name for a non-static field. d. A local variable stores a temporary state; it is declared inside a method.

Answer: c. The term “class variable” is another name for a non-static field.

10. Which of the following statement(s) is/are true? a. Static methods in interfaces are never inherited. b. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass. c. You can prevent a class from being subclassed by using the final keyword in the class’s declaration. d. An abstract class can only be subclassed; it cannot be instantiated.

Answer: a, b, c, d

Programming Assignment Answers

Week 3 : programming assignment 1.

Define a class Point with two fields x and y each of type double. Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double. Complete the code segment given below. Use Math.sqrt( ) to calculate the square root.

Week 3 : Programming Assignment 2

This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum( ) and multiply ( ). You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.

Week 3 : Programming Assignment 3

Complete the code segment to swap two numbers using call by object reference.

Week 3 : Programming Assignment 4

This program is related to the generation of Fibonacci numbers.>

For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8 th Fibonacci number.

A partial code is given and you have to complete the code as per the instruction given .

Week 3 : Programming Assignment 5

A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

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Programming in Java nptel quiz solutions 2023 week 3 solutions

nptel java week 3 assignment answers 2023

programming in java nptel answers week 3

In which of the following scenario(s), the static block is used in java.

a. To create static variables.

b. To initialize instance variables.

c. To initialize static variables.

d. To create new objects.

In Java, the static block is used in the following scenario:

Static blocks in Java are used to initialize static variables or perform other static initialization tasks for a class. They are executed when the class is loaded by the Java Virtual Machine (JVM) and are particularly useful when you need to set up values for static fields that cannot be initialized directly at the point of declaration.

The other options (a, b, and d) are not accurate descriptions of the primary purpose of static blocks:

a. Static variables are typically initialized directly at the point of declaration or within static blocks.

b. Instance variables are usually initialized within constructors or directly at the point of declaration, not in static blocks.

d. Creating new objects is done using constructors or factory methods, not through static blocks.

So, the correct answer is "c. To initialize static variables."

programming in java nptel quiz solutions 2023

Consider the following piece of code..

public class Question { private static int count = 0;

public static void main(String[] args) { incrementCount(); System.out.println("Count: + count);

incrementCount() {

Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

a. public void

b. private void

C. public static void

d. private static void

The correct keyword to fill in the blank is:

So, the corrected code should look like:

public class Question {

private static int count = 0;

public static void main(String[] args) {

incrementCount();

System.out.println("Count: " + count); // Added the missing double quotes and the correct variable name

}

private static void incrementCount() { // Used the correct keyword for method declaration

count++;

This code should now compile and execute successfully.

programming in java nptel assignment solutions week 3

public void display () { System.out.println("A's display method");

class B extends A {

public void display () { System.out.println("B's display method");

public class Main {

public static void main(String[] args) { A a = new B(); a.display();

((B) a).display();

What is the output of the above code?

a. A's display method

B's display method

b. A's display method A's display method

c. B's display method B's display method

d. B's display method A's display method

The correct output of the given code is:

Here's the explanation:

A a = new B(); - This creates an instance of class B and assigns it to a reference variable of type A. This is allowed due to polymorphism (subclass instance can be assigned to a superclass reference).

a.display(); - This calls the display() method of class B (since the object referred to is an instance of class B). So, "B's display method" is printed.

((B) a).display(); - Here, we cast the reference a back to type B before calling the display() method. This again calls the display() method of class B. So, "B's display method" is printed again.

Therefore, the correct output is "B's display method B's display method".

Which of the following statement(s) is/are false?

a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it.

b. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it.

c. A subclass inherits all of its parent's public and protected members, no matter what package the subclass is in.

d. You cannot declare new methods in the subclass that are not in the superclass.

The false statement is:

Explanation:

a. True. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. This is a fundamental concept of method overriding in object-oriented programming.

b. True. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it. This is known as method hiding for static methods.

c. True. A subclass inherits all of its parent's public and protected members, no matter what package the subclass is in. This is a key feature of inheritance in Java.

d. False. You can declare new methods in the subclass that are not in the superclass. Subclasses can have additional methods beyond those inherited from the superclass. This is one of the ways to extend and customize the behavior of a class in object-oriented programming.

So, the correct answer is d. You cannot declare new methods in the subclass that are not in the superclass.

Which of the following statement(s) is/are true?

a. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass.

b. You can prevent a class from being subclassed by using the final keyword in the class's declaration.

c. An abstract class can be instantiated.

d. Common behaviour can be defined in a superclass and inherited into a subclass using the extends keyword.

The true statement(s) are:

d. Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword.

a. False. Changing an instance method in the superclass to a static method in the subclass does not cause a compile-time error. It's allowed, but it's method hiding rather than method overriding. The subclass's static method will not override the superclass's instance method.

b. True. The final keyword in a class's declaration prevents the class from being subclassed. Once a class is marked as final, it cannot be extended by any other class.

c. True. An abstract class can be instantiated using anonymous inner classes or through concrete subclasses that provide implementations for the abstract methods. However, you cannot directly create an instance of an abstract class using the new keyword.

d. True. Common behavior can indeed be defined in a superclass, and subclasses can inherit this behavior using the extends keyword. This is a core principle of inheritance in object-oriented programming.

So, the correct answers are b, c, and d.

Consider the following program.

public class Question{

public static void main(String[] args) {

String str = " programming in java ";

System.out.println(str.substring (1,3) +str.substring (4,5)+

str.substring(6,8));

What is the output of the above program?

The correct answer is:

str.substring(1, 3) - This extracts the substring from index 1 (inclusive) to index 3 (exclusive), which gives "ro".

str.substring(4, 5) - This extracts the substring from index 4 (inclusive) to index 5 (exclusive), which gives "a".

str.substring(6, 8) - This extracts the substring from index 6 (inclusive) to index 8 (exclusive), which gives "mm".

Putting these substrings together, you get "ro" + "a" + "mm", which results in "roamm".

So, the correct output of the program is "program".

class Question {

static int a =10;

class Questionl extends Question{ static int a =20;

public class Quest extends Question1 { public static void main(String args[]) { a =100;

System.out.println (Question.a);

System.out.println (Questionl.a);

Which of the following is the output of the above program?

class Question defines a static variable a with a value of 10.

class Questionl extends Question and defines its own static variable a with a value of 20.

public class Quest extends Question1 should be corrected to public class Quest extends Questionl for the code to compile. Since there is a typo in the class name, the code would not compile. Assuming the typo is corrected, let's proceed with the explanation.

In the main method:

a = 100; assigns the value 100 to the a variable in the class Quest, which is inherited from Questionl.

System.out.println(Question.a); prints the value of the static variable a from the Question class, which is 10.

System.out.println(Questionl.a); prints the value of the static variable a from the Questionl class, which is 100 (since you modified it in the main method).

So, the correct output of the program is "10" followed by "100".

QUESTION 8:

public class Child1 extends Question {

int a 1000;

int b=2000;

void add (int a, int b) {

System.out.println(a+this.b-super.a);

Child1 c = new Child1 ();

c.add(100, 300);

If the program is executed, then what will be the output from the execution?

In the Child1 class constructor, a is assigned the value 1000, and b is assigned the value 2000.

The add method in the Child1 class accepts two parameters named a and b.

Inside the add method, a + this.b - super.a is calculated:

a (from the method parameter) is 100.

this.b (from the Child1 instance) is 2000.

super.a (from the Question class) is 400.

So, the calculation is: 100 + 2000 - 400 = 1700.

In the main method, an instance of Child1 is created, and the add method is called with parameters 100 and 300.

Therefore, the output of the program will be "1700".

a. Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation.

b. Static methods in interfaces are never inherited.

c. The term "class variable" is another name for a non-static field.

d. A local variable stores a temporary state; it is declared inside a method.

a. This statement is true. Data encapsulation is a fundamental concept in object-oriented programming. It involves hiding the internal details and state of an object from the outside world and providing controlled access to that data through well-defined public methods. This helps in maintaining the integrity and consistency of the object's state.

b. This statement is false. Static methods in interfaces are indeed inherited by classes that implement the interface. They can be called using the interface name or through the implementing class.

c. This statement is false. The term "class variable" usually refers to a static variable, not a non-static field. A class variable is shared among all instances of a class and is associated with the class itself, not with individual instances.

d. This statement is true. A local variable is a variable declared within a method or a block of code and is accessible only within that scope. It stores temporary data that is used for computations or other tasks within the method. Once the method completes its execution, the local variable goes out of scope and is no longer accessible.

So, the correct answers are a and d.

All classes in java are inherited from which class?

a. java.lang.class

b. java.class.inherited C. java.class.object d. java.lang.Object

All classes in Java are inherited from:

d. java.lang.Object

In Java, the Object class, which resides in the java.lang package, is the root class for all other classes. This means that every class in Java implicitly inherits from the Object class. The Object class provides fundamental methods and behaviors that are common to all objects in Java, such as toString(), equals(), and hashCode().

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Programming in Java | NPTEL 2023 | Week 3 quiz solutions

This set of MCQ(multiple choice questions) focuses on the Programming in Java NPTEL 2023 Week 3 Quiz Solutions .

Course layout (Answers Link)

Answers COMING SOON! Kindly Wait!

Week 1 : Overview of Object-Oriented Programming and Java Programming Assignment Week 2: Java Programming Elements Programming Assignment Week 3: Input-Output Handling in Java Programming Assignment Week 4: Encapsulation Programming Assignment Week 5: Inheritance Programming Assignment Week 6: Exception Handling Programming Assignment Week 7: Multithreaded Programming Programming Assignment Week 8: Java Applets and Servlets Programming Assignment Week 9: Java Swing and Abstract Windowing Toolkit Week 10: Networking with Java Week 11: Java Object Database Connectivity Week 12: Interface and Packages for Software Development

NOTE: You can check your answer immediately by clicking show answer button. Programming in Java NPTEL 2023 Week 3 Quiz Solutions” contains 10 questions.

Now, start attempting the quiz.

Programming in Java NPTEL 2022 Week 1 Quiz Solutions

Q1. In which of the following scenario(s), the static block is used in Java?

a) To create static variables b) To initialize instance variables c) To initialize static variables d) To create new objects

Answer: c) To initialize static variables

Q2. Consider the following piece of code. Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

a) public void b) private void c) public static void d) private static void

Answer: c), d)

Q3. What is the output of the above code?

a) A’s display method B’s display method b) A’s display method A’s dispaly method c) B’s display method B’s display method d) B’s display method A’s display method

Q4. Which of the following statement(s) is/are false?

a) You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it b) You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it c) A subclass inherits all of its parent’s public and protected memebers, no matter what package the subclass is in d) You cannot declare new methods in the subclass that are not in the superclass

Q5. Which of the following statement(s) is/are true?

a) You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass b) You can prevent a class from being subclassed by using the final keyword in the class’s declaration c) An abstract class can be instantiated d) Common behaviour can be defined in a superclass and inherited into a subclass using the extends keyword

Answer: a), b), d)

Q6. What is the output of the above program?

a) prgam b) program c) gramm d) ing in

Answer: a) prgam

Q7. Which of the following is the output of the above program?

a) 10 100 b) 10 20 c) 100 10 d) 10 19

Q8. If the program is executed, then what will be the output from the execution?

a) 1700 b) 1300 c) 0 d) 2600

Answer: a) 1700

Q9. Which of the following statement(s) is/are true?

a) Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation b) Static methods in interfaces are never inherited c) The term “class variable” is another name for a non-static field d) A local variable stroes a temporary state; it is declared inside a method

Answer: a), c), d)

Q10. All classes in java are inherited from which class?

a) java.lang.class b) java.class.inherited c) java.class.object d) java.lang.object

Programming in Java NPTEL 2023 Week 3 Quiz Solutions

Q1. Which of the following statement(s) is/are correct about the constructor?

a) Constructors cannot be synchronized in Java b) Java does not provide a default copy constructor c) A constructor cannot be overloaded d) “this” or “super” can be used in a constructor

Q2. Which of the following statement(s) is/are true?

a) You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. b) You can write a new static method in the subclass with the same signature as the one in the superclass, thus hidiing it. c) A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in. d) You cannot declare new methods in the subclass that are not in the superclass.

Answer: a), b), c)

Q3. Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

a) abstract b) final c) default d) public

Answer: b), d)

Q4. How many instances of abstract class can be created?

a) 0 b) 1 c) 2 d) Multiple

Q5. Structure a Java class such that only methods within the class can access its instance variables is referred to as ________.

a) Object orientation b) inheritance c) platform independence d) encapsulation

Q6. Which of the following statement(s) is/are true?

a) A final method cannot be overridden in a subclass b) The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable c) Class methods cannot use this keyword as there is no instance for this refer to d) A final method can be overridden in a subclass

a) Java b) There will be a compile-time error c) JavaJava d) The program will give a runtime error

Q8. What is the output of the above program?

a) java b) ring c) r min d) gram

Q9. Which of the following statement(s) is/are False?

a) Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation b) Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword c) The term “class variable” is another name for a non-static field d) A local variable stores a temporary state; it is declared inside a method.

Q10. Which of the following statement(s) is/are true?

a) Static methods in interfaces are never inherited b) You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass c) You can prevent a class from being subclassed by using the final keyword in the class’s declaration d) An abstract class can only be subclassed; it cannot be instantiated

Answer: a), b), c), d)

Programming in Java NPTEL 2022 Week 3 Quiz Solutions

Q1. Which of this keyword can be used in a sub class to call the constructor of super class?

a) super b) this c) extent d) extends

Answer: a) super

Q2. What is the output of the above program?

a) i+j is 42 4 0 b) i+j is 6 9 2 c) i+j is 42 9 2 d) i+j is 6 4 0

Q3. What is the output of the above program?

a) 4 b) 10 c) 2 d) runtime error

Answer: c) 2

Q4. For each description on the left, find the best matching modifier on the right. You may use a choice more than once or not at all.

a) 1-A, 2-A, 3-C, 4-D, 5-E b) 1-A, 2-A, 3-A, 4-B, 5-C c) 1-C, 2-B, 3-A, 4-A, 5-D d) None of Above

Answer: b) 1-A, 2-A, 3-A, 4-B, 5-C

Q5. All the variables of interface should be?

a) default and final b) default and static c) public, static and final d) protect, static and final

Answer: c) public, static and final

Q6. Which of the following statement(s) is/are NOT true?

a) A final method cannot be overridden in a subclass. b) The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c) Class methods cannot use this keyword as there is no instance for this to refer to. d) A final method can be overridden in a subclass.

Answer: d) A final method can be overridden in a subclass.

Q7. Which of the following statements is/are true?

a) Hello b) There will be a compile-time error c) HelloHello d) The program will give a runtime error

Answer: d) The program will give a runtime error

Q8. Which of the following option is true about the above program?

a) Error: String cannot be a method return type like void, int, char, etc.; as it is a class. b) Error: Non-static variable ‘answer’ cannot be referenced from a static context. c) Output: The answer to the question. Which course have you opted? is Programming with Java d) Error: Compilation error as variable ‘question’ is not static.

Answer: c) Output: The answer to the question. Which course have you opted? is Programming with Java

Q9. Disadvantage(s) of inheritance in Java programming is/are

a) Code readability b) two classes (base and inherited class) get tightly coupled c) Save development time and effort d) Code reusability

Answer: b) two classes (base and inherited class) get tightly coupled

Q10. Which inheritance in Java programming is not supported?

a) Multiple inheritance using classes. b) Multiple inheritance using interfaces. c) Multilevel inheritance d) Single inheritance

Answer: a) Multiple inheritance using classes.

Previous Course – Week 3 Quiz Solutions

Q1. Consider the following piece of code in Java.

What is the output of the above program?

a) 2 3 b) 3 3 c) Runtime Error d) Compilation Error

Answer: b) 3 3

Q2. Consider the following piece of code in Java.

a) 6 b) 10 c) 21 d) error

Answer: a) 6

Q3. If a class inheriting an abstract class does not define all of its functions then it will be known as?

a) Default b) Abstract c) A simple class d) Static class

Answer: b) Abstract

Q4. Which among the following best describes polymorphism?

a) It is the ability for many messages/data to be processed in one way b) It is the ability for a message/data to be processed in only 1 form c) It is the ability for a message/data to be processed in more than one form d) It is the ability for undefined message/data to be processed in at least one way

Answer: c) It is the ability for a message/data to be processed in more than one form

Q5. Consider the following piece of code in Java

a) 30 b) 20 c) Compile error d) Runtime error

Answer: c) Compile error

Programming in Java NPTEL 2022 Week 3 quiz Solutions

Q6. All the variables of the interface should be?

Q7. Disadvantage(s) of inheritance in Java programming is/are

a) Code readability b) two classes (base and inherited class) get tightly coupled c) Code maintainability d) Code reusability

Programming in Java NPTEL 2022 Week 3 Quiz solutions

Q8. When does method overloading is determined?

a) At run time b) At coding time c) At compile time d) At execution time

Answer: c) At compile time

Which of the following statements is/are true?

a) Output: Hello b) Program will compile successfully c) There will be a compile-time error d) The program will give a runtime error

a) Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as data encapsulation b) Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword c) The term “class variable” is another name for static field d) A local variable stores temporary state; it is declared inside a method

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NPTEL Programming In Java Assignment 3 Answers July 2023

NPTEL Programming In Java Assignment 3 Answers July 2023:- All the Answers are provided here to help the students as a reference, You must submit your assignment at your own knowledge

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NPTEL Programming In Java Week 3 Quiz Assignment Answers 2023

1. In which of the following scenario(s), the static block is used in Java? a. To create static variables. b. To initialize instance variables. c. To initialize static variables. d. To create new objects.

2. Consider the following piece of code.

Fill in the blank with the appropriate k eyword(s) from the list given below so that the program compiles successfully. a. public void b. private void c. public static void d. private static void

3. Consider the following piece of code.

What is the output of the a b ove code? a. A’s display method B’s display method b. A’s display method A’s display method c. B’s display method B’s display method d. B’s display method A’s display method

4. Which of the following statements) is/are false? a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. b. You can write a new static method in the subclass with the same signature as the one in the superclass, th u s hiding it. c. A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in. d. You cannot declare new methods in the subclass that are not in the superclass.

5. Which of the following statement(s) is/are true? a. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass. b. You can prevent a clas s from being subclassed by using the final keyword in the class’s declaration. c. An abstract class can be instantiated. d. Common behaviour can be defined in a superclass and inherited into a subclass using the extends keyword.

6. Consider the following program.

What is the output of the abo v e program? a. prgam b. program c. gramm d. ing in

7. Consider the following piece of code.

NPTEL Programming In Java Assignment 3 Answers July 2023

Which of the following is the output of the abo v e program? a. 10 100 b. 10 20 c. 100 1 0 d. 10 10

8. Consider the following program.

If the program is executed, then w h at will be the output from the execution? a. 1700 b. 1300 c. 0 d. 2600

9. Which of the following statement(s) is/are true? a. Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation. b. Static methods in interfaces are never inherited. c. The term “class variable” is another name for a non-s t atic field. d. A local variable stores a temporary state; it is declared inside a method.

10. All classes in java are inherited from which class? a. java.lang.class b. java.class.inherited c. java.class . object d. java.lang.Object

NPTEL Programming In Java Week 3 Programming Assignment Solutions 2023

Q1. This program is related to the generation of Fibonacci numbers.

For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8th Fibonacci number.

A partial code is given and you have to complete the code as per the instruction given .

Q2. Define a class Point with two fields x and y each of type double. Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double.

Complete the code segment given below. Use Math.sqrt( ) to calculate the square root.

Q3. A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

Q4. This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum( ) and multiply ( ). You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.

Q5. Complete the code segment to swap two numbers using call by object reference.

NPTEL Programming In Java Assignment 3 Answers [July 2022]

1. Which of this keyword can be used in a sub class to call the constructor of super class? a. super b. this c. extent d. extends

2. What is the output of the above program? a. i+jis 42 4 b. i+jis6 9 2 c. i+jis 42 9 2 d. i+jis 6 4

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3. What is the output of the above program? a. 4 b. 10 c. 2 d. runtime error

4. For each description on the left, find the best matching modifier on the right. You may use a choice more than once or not at all. 1. Hides the instance variable from code in other files. A. private 2. Hides the method from code in other files B. public 3. Hides the subclass from code in other files. C. final 4. Exposes the API method to code in other files. D. static 5. Prevents the value of the instance variable from being Changed once initialized. E. none of the above a. 1-A.2-A.3-C.4-D5-E b. 1-A.2-A,3-A,4-B,5-C c. 1-C.2-B.3-A, 4-A,5-D d. None of Above

5. All the variables of interface should be? a) default and final b) default and static c) public, static and final d) protect, static and final

6. Which of the following statement(s) is/are NOT true? a. A final method cannot be overridden in a subclass. b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c. Class methods cannot use this keyword as there is no instance for this to refer to. d. A final method can be overidden in a subclass.

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7. Which of the following statements is/ are true? a. Hello b. There will be a compile-time error c. HelloHello. d. The program will give a runtime error.

8. Which of the following option is true about the above program? a. Eror: String cannot be a method return tpe like void, int, char, etc.; as it isa class. b. Eror: Non-static variable ‘answer’ cannot be referenced from a static context. C. Output: The answer to the question, Which course have you opted? is Programming with Java d. Error: Compilation error as variable question’ is not static.

9. Disadvantage(s) of inheritance in Java programming is/are a) Code readability b) two classes (base and inherited class) get tightly coupled c) Save development time and effort d) Code reusability

10. Which inheritance in Java programming is not supported? a. Multiple inheritance using classes. b. Multiple inheritance using interfaces. c. Multilevel inheritance. d. Single inheritance.

NPTEL Programming In Java Assignment 3 Programming Solutions

Q1. This program is related to the generation of Fibonacci numbers. For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8 th Fibonacci number. A partial code is given and you have to complete the code as per the instruction given below.

What is Programming In Java?

With the growth of Information and Communication Technology, there is a need to develop large and complex software. Further, those software should be platform independent, Internet enabled, easy to modify, secure, and robust. To meet this requirement object-oriented paradigm has been developed and based on this paradigm the Java programming language emerges as the best programming environment. Now, Java programming language is being used for mobile programming, Internet programming, and many other applications compatible to distributed systems. This course aims to cover the essential topics of Java programming so that the participants can improve their skills to cope with the current demand of IT industries and solve many problems in their own filed of studies.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of the average of best 8 assignments out of the total 12 assignments given in the course. Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF THE AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

NPTEL Programming In Java Assignment 2 Answers Jan 2022

Q1. Consider the following piece of code in Java.

What is the output of the above program?

a) 2 3 b) 3 3 c) Runtime Error d) Compilation Error

Answer:- b) 3 3

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Q2. Consider the following piece of code in Java.

a) 6 b) 10 c) 21 d) error

Answer:- a) 6

Q3. If a class inheriting an abstract class does not define all of its functions then it will be known as?

a) Default b) Abstract c) A simple class d) Static class

Answer:- b) Abstract

Q4. Which among the following best describes polymorphism?

Answer:- c) It is the ability for a message/data to be processed in more than one form

Q5. Consider the following piece of code in Java

a) 30 b) 20 c) Compile error d) Runtime error

Answer:- c) Compile error

Q6. All the variables of the interface should be?

a) default and final b) default and static c) public, static and final d) protect, static and final

Answer:- c) public, static and final

Q7. Disadvantage(s) of inheritance in Java programming is/are

a) Code readability b) two classes (base and inherited class) get tightly coupled c) Code maintainability d) Code reusability

Answer:- b) two classes (base and inherited class) get tightly coupled

Q8. When does method overloading is determined?

a) At run time b) At coding time c) At compile time d) At execution time

Answer:- c) At compile time

Which of the following statements is/are true?

a) Output: Hello b) Program will compile successfully c) There will be a compile-time error d) The program will give a runtime error

Answer:- (B) & (D)

Q10. Which of the following statement(s) is/are true?

Answer:- (C) & (D)

Disclaimer :- We do not claim 100% surety of solutions, these solutions are based on our sole expertise, and by using posting these answers we are simply looking to help students as a reference, so we urge do your assignment on your own.

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Programming In Java Assignment 2 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge

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Nptel programming in java week 3 assignment answers 2023.

NPTEL Programming in Java Assignment Answer

Are you looking for help in Programming In Java NPTEL Week 3 Assignment Answers? So, here in this article, we have provided Programming In Java week 3 Assignment Answer’s hint.

Table of Contents

NPTEL Programming In Java Week 3 Assignment Answers

Q1. Which of the following statement(s) is/are correct about the constructor?

Answer : a. Constructors cannot be synchronized in Java. b. Java does not provide a default copy constructor.

d. “this” or “super” can be used in a constructor.

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Q2. Which of the following statement(s) is/are true?

Answer : a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. b. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it. c. A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in.

Q3. Consider the following piece of code.

Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

Answer: b. final d. public

Q4. How many instances of abstract class can be created?

Answer: a. 0

Q5. Structuring a Java class such that only methods within the class can access its instance variables is referred to as _______.

Answer: d. encapsulation

Q6. Which of the following statement(s) is/are true?

Answer: a. A final method cannot be overridden in a subclass. b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c. Class methods cannot use this keyword as there is no instance for this to refer to.

Q7. Consider the following piece of code.

Which of the following is the output of the above program?

Answer: b. There will be a compile-time error.

Q8. Consider the following program.

What is the output of the above program?

Answer: b. ring

Q9. Which of the following statement(s) is/are False?

Answer: c. The term “class variable” is another name for a non-static field.

Q10. Which of the following statement(s) is/are true?

Answer: a. Static methods in interfaces are never inherited. b. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass. c. You can prevent a class from being subclassed by using the final keyword in the class’s declaration. d. An abstract class can only be subclassed; it cannot be instantiated.

Programming In Java Week 3 Programming Assignment Answers

Disclaimer: These answers are provided only for the purpose to help students to take references. This website does not claim any surety of 100% correct answers. So, this website urges you to complete your assignment yourself.

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Ethical Hacking : Assignment 12: Question no 3

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October 2023 NPTEL Exams - Hall Tickets Released!

Ethical Hacking - Assignment- 11 and 12 Solution Released

Dear Learners, The Assignment- 11, 12 of Week- 11, 12 Solution for the course " Ethical Hacking " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Link for assignment 11 solution: https://drive.google.com/file/d/1comSW3C5ZyayjSg2uDFEBTi--oxk5FY4/view?usp=drive_link Link for assignment 12 solution: https://drive.google.com/file/d/1W1V_sQQbDqsrIsOGvGTWXTkTd-OIcQZz/view?usp=share_link Happy Learning! Thanks & Regards, NPTEL Team

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Ethical hacking - assignment- 9 solution released.

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Nptel: ethical hacking: week 10 content and assignment is live now .

Dear Students, The lecture videos for Week 10 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=102&lesson=103 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 10 for Week 10 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=102&assessment=181 The assignment has to be submitted on or before Wednesday, [04/10/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

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Ethical hacking - assignment- 7 solution released.

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Ethical Hacking - Assignment- 6 Solution Released

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Ethical Hacking - Week 8 Feedback Form

Ethical hacking - assignment- 5 solution released.

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Ethical Hacking - Week 7 Feedback Form

Ethical hacking : assignment 3: question no 1.

Dear Students, There are mistakes in assignment 3 question no 1 . Hence the questions are not considered for evaluation. The re-evaluation has been done. The updated score is displayed under Progress tab. Sorry for the inconvenience. -NPTEL Team

NPTEL: Ethical Hacking: Week 7 Content and Assignment is live now !!

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Ethical Hacking - Week 6 Feedback Form

Nptel: ethical hacking: week 6 content and assignment is live now .

Dear Students, The lecture videos for Week 6 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=65&lesson=66 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 6 for Week 6 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=65&assessment=177 The assignment has to be submitted on or before Wednesday, [06/09/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Ethical Hacking - Assignment- 4 Solution Released

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Ethical Hacking - Assignment- 3 Solution Released (Revised QS 3)

Dear Learners, The Assignment- 3 of Week- 3 Solution (Revised QS 3) for the course " Ethical Hacking " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Link for assignment 3 solution (Revised QS 3) : https://drive.google.com/file/d/1OQImzjTu2Y3rnNVeLJrw7TAQki6mElkS/view?usp=drive_li nk Happy Learning! Thanks & Regards, NPTEL Team

Ethical Hacking - Assignment- 3 Solution Released

Dear Learners, The Assignment- 3 of Week- 3 Solution for the course " Ethical Hacking " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Link for assignment 3 solution: https://drive.google.com/file/d/1XQtqDUqoNvNL0VWHWoNmKBmFcLWeph76/view?usp=drive_link Happy Learning! Thanks & Regards, NPTEL Team

Ethical Hacking - Week 5 Feedback Form

Nptel: ethical hacking: week 5 content and assignment is live now .

Dear Students, The lecture videos for Week 5 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=56&lesson=57 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 5 for Week 5 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=56&assessment=176 The assignment has to be submitted on or before Wednesday, [30/08/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Exam Registration for NPTEL courses extended !!

Dear Learner,

Registration for the certification exam has been extended.

CLICK HERE to register for the exam.

Choose from the Cities where exam will be conducted: Exam Cities

Last date for exam registration is extended : August 28, 2023, 5:00 PM (Monday).

Click here to view Timeline and Guideline : Guideline

Note: Kindly ignore if registered already.

Happy Learning!

Thanks and Regards,

NPTEL TEAM.

Ethical Hacking - Week 4 Feedback Form

Nptel: ethical hacking: week 4 content and assignment is live now .

Dear Students, The lecture videos for Week 4 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=47&lesson=48 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 4 for Week 4 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=47&assessment=172 The assignment has to be submitted on or before Wednesday, [23/08/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Ethical Hacking - Assignment- 0, 1 & 2 Solution Released

Dear Learners, The Assignment- 0, 1 & 2 of Week- 0, 1 & 2 Solution for the course " Ethical Hacking " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Link for assignment 0 solution: https://drive.google.com/file/d/1UMt2ygNr59vV6jH1vatmeeu8Gv0GUDyH/view?usp=drive_link Link for assignment 1 solution: https://drive.google.com/file/d/1TrBT2Yk5c51ausARzmukKcBlRB2TrNeA/view?usp=drive_link Link for assignment 2 solution: https://drive.google.com/file/d/1VJ5JUcCLki11EJlTitvsNq17oXuSSGRI/view?usp=drive_link Happy Learning! Thanks & Regards, NPTEL Team

Ethical Hacking - Week 3 Feedback Form

Nptel: ethical hacking: week 3 content and assignment is live now .

Dear Students, The lecture videos for Week 3 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=38&lesson=39 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 3 for Week 3 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=38&assessment=170 The assignment has to be submitted on or before Wednesday, [16/08/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Ethical Hacking - Week 2 Feedback Form

Nptel: ethical hacking: week 2 content and assignment is live now .

Dear Students, The lecture videos for Week 2 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=29&lesson=30 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 2 for Week 2 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=29&assessment=169 The assignment has to be submitted on or before Wednesday, [09/08/2023], 23:59 IST . As we have done so far, please use the discussion forums if you have any questions on this module. Note: Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Ethical Hacking - Week 1 Feedback Form

Ethical hacking - download video links are available now.

Dear Learners, The download video link for the course Ethical Hacking is available now in the course outline. Please check the download video link: https://nptel.ac.in/courses/106105217 -NPTEL Team

NPTEL: Ethical Hacking: Week 1 Content and Assignment is live now !!

Dear Students, The lecture videos for Week 1 have been uploaded for the course Ethical Hacking . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=18&lesson=19 The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already). Assignment 1 for Week 1 is also released and can be accessed from the following link: https://onlinecourses.nptel.ac.in/noc23_cs75/unit?unit=18&assessment=168 The assignment has to be submitted on or before Wednesday, [09/08/2023], 23:59 IST. As we have done so far, please use the discussion forums if you have any questions on this module. Note : Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately. Thanks and Regards, --NPTEL Team

Stay Ahead of the Curve: Follow NPTEL for a Bright Future!!

Dear Learners Don't let knowledge pass you by! Stay in the loop with all the latest updates from NPTEL! Follow us on social media to never miss a beat in your educational journey. Be the first to know about new courses, insightful articles, and exciting announcements. Join our growing community. Tap those links below and let the learning adventure begin! Twitter: https://twitter.com/nptelindia?t=Yv1BextATpcwg7K2kOxbhg&s=08 Facebook: https://www.facebook.com/NPTELNoc/ Instagram: https://www.instagram.com/nptel_india/ LinkedIn: https://www.linkedin.com/mwlite/company/nptel YouTube: https://www.youtube.com/user/nptelhrd Happy learning! Team NPTEL

Ethical Hacking- Assignment-0-RELEASED

Dear Learners, We welcome you all to this course. The assignment 0 for the course Ethical Hacking has been released. This assignment is based on a prerequisite of the course. Kindly note that marks obtained in this assignment will not be considered for the final assessment. You can find the assignment under Week 0 unit on the left-hand side of your screen. You can submit the assignment multiple times. All the best !! --NPTEL Team

NPTEL: Exam Registration is open now for July 2023 courses!

Dear Learner,

Here is the much-awaited announcement on registering for the July 2023 NPTEL course certification exam.

1. The registration for the certification exam is open only to those learners who have enrolled in the course.

2. If you want to register for the exam for this course, login here using the same email id which you had used to enroll to the course in Swayam portal. Please note that Assignments submitted through the exam registered email id ALONE will be taken into consideration towards final consolidated score & certification.

3 . Date of exam: October 29, 2023

4. Exam fees:

If you register for the exam and pay before Aug 14, 2023, 5:00 PM, Exam fees will be Rs. 1000/- per exam .

5. 50% fee waiver for the following categories:

Students belonging to the SC/ST category: please select Yes for the SC/ST option and upload the correct Community certificate.

Students belonging to the PwD category with more than 40% disability: please select Yes for the option and upload the relevant Disability certificate.

6. Last date for exam registration: Aug 18, 2023, 5:00 PM (Friday).

7. Between Aug 14, 2023, 5:00 PM & Aug 18, 2023, 5:00 PM late fee will be applicable.

8. Mode of payment: Online payment - debit card/credit card/net banking/UPI.

9. HALL TICKET:

The hall ticket will be available for download tentatively by 2 weeks prior to the exam date. We will confirm the same through an announcement once it is published.

10. FOR CANDIDATES WHO WOULD LIKE TO WRITE MORE THAN 1 COURSE EXAM:- you can add or delete courses and pay separately – till the date when the exam form closes. Same day of exam – you can write exams for 2 courses in the 2 sessions. Same exam center will be allocated for both the sessions.

11. Data changes:

Last date for data changes: Aug 18, 2023, 5:00 PM :

We will charge an additional fee of Rs. 200 to make any changes related to name, DOB, photo, signature, SC/ST and PWD certificates after the last date of data changes.

The following 6 fields can be changed(until the form closes) ONLY when there are NO courses in the course cart. And you will be able to edit those fields only if you: -

REMOVE unpaid courses from the cart And/or - CANCEL paid courses

1. Do you come under the SC/ST category? *

2. SC/ST Proof

3. Are you a person with disabilities? *

4. Are you a person with disabilities above 40%?

5. Disabilities Proof

6. What is your role ?

Note: Once you remove or cancel a course, you will be able to edit these fields immediately.

But, for cancelled courses, refund of fees will be initiated only after 2 weeks.

12. LAST DATE FOR CANCELLING EXAMS and getting a refund: Aug 18, 2023, 5:00 PM

13. Click here to view Timeline and Guideline : Guideline

Domain Certification

Domain Certification helps learners to gain expertise in a specific Area/Domain. This can be helpful for learners who wish to work in a particular area as part of their job or research or for those appearing for some competitive exam or becoming job ready or specialising in an area of study.

Every domain will comprise Core courses and Elective courses. Once a learner completes the requisite courses per the mentioned criteria, you will receive a Domain Certificate showcasing your scores and the domain of expertise. Kindly refer to the following link for the list of courses available under each domain: https://nptel.ac.in/domains

Outside India Candidates

Candidates who are residing outside India may also fill the exam form and pay the fees. Mode of exam and other details will be communicated to you separately.

Thanks & Regards,

Ethical Hacking:Welcome to NPTEL Online Course - July 2023!!

Every week, about 2.5 to 4 hours of videos containing content by the Course instructor will be released along with an assignment based on this. Please watch the lectures, follow the course regularly and submit all assessments and assignments before the due date. Your regular participation is vital for learning and doing well in the course. This will be done week on week through the duration of the course.
Please do the assignments yourself and even if you take help, kindly try to learn from it. These assignments will help you prepare for the final exams. Plagiarism and violating the Honor Code will be taken very seriously if detected during the submission of assignments.
The announcement group - will only have messages from course instructors and teaching assistants - regarding the lessons, assignments, exam registration, hall tickets, etc.
The discussion forum (Ask a question tab on the portal) - is for everyone to ask questions and interact. Anyone who knows the answers can reply to anyone's post and the course instructor/TA will also respond to your queries.
Please make maximum use of this feature as this will help you learn much better.
If you have any questions regarding the exam, registration, hall tickets, results, queries related to the technical content in the lectures, any doubts in the assignments, etc can be posted in the forum section
The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: October 29, 2023 Morning session 9am to 12 noon; Afternoon Session 2 pm to 5 pm.
Registration URL: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.
Once again, thanks for your interest in our online courses and certification. Happy learning.

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NPTEL Programming in Java Assignment 3 Answers 2023

By Brokenprogrammers

NPTEL Programming in Java Assignment 3 Answers 2023

Hello Learners, In this Post, you will find NPTEL Programming in Java Assignment 3 Week 3 Answers 2023 . All the Answers are provided below to help the students as a reference don’t straight away look for the solutions.

NPTEL Programming in Java Assignment 4 Answers Join Group👇

Note: First try to solve the questions by yourself. If you find any difficulty, then look for the solutions.

NPTEL Programming in Java Assignment 3 Answers 2023:

We are updating answers soon Join Group for update: CLICK HERE

Q.1. Which of the following statement(s) is/are correct about the constructor?

a. Constructors cannot be synchronized in Java.
b. Java does not provide a default copy constructor.
c. A constructor cannot be overloaded.
d. “this” or “super” can be used in a constructor.

Q.2. Which of the following statement(s) is/are true?

a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it.
b. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it.
c. A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in.
d. You cannot declare new methods in the subclass that are not in the superclass.

Q.3. Consider the following piece of code.

Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

a. abstract

Q.4. How many instances of abstract class can be created?

d. Multiple

Q.5. Structuring a Java class such that only methods within the class can access its instance variables is referred to as __ .

a. object orientation
b. inheritance
c. platform independence
d. encapsulation

Q.6. Which of the following statement(s) is/are true?

a. A final method cannot be overridden in a subclass.
b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable.
c. Class methods cannot use this keyword as there is no instance for this to refer to.
d. A final method can be overridden in a subclass.

Q.7. Consider the following piece of code.

Which of the following is the output of the above program.

b. There will be a compile-time error.
c. JavaJava.
d. The program will give a runtime error.

NPTEL Programming in Java Week 3 Answers Join Group👇

Q.8. consider the following program..

What is the output of the above program?

Q.9. Which of the following statement(s) is/are False?

a. Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation.
b. Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword.
c. The term “class variable” is another name for a non-static field.
d. A local variable stores a temporary state; it is declared inside a method.

Q.10. Which of the following statement(s) is/are true?

a. Static methods in interfaces are never inherited.
b. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass.
c. You can prevent a class from being subclassed by using the final keyword in the class’s declaration.
d. An abstract class can only be subclassed; it cannot be instantiated.

NPTEL Programming in Java Assignment 3 Answers Join Group👇

Disclaimer : This answer is provided by us only for discussion purpose if any answer will be getting wrong don’t blame us. If any doubt or suggestions regarding any question kindly comment. The solution is provided by Brokenprogrammers . This tutorial is only for Discussion and Learning purpose.

About NPTEL Programming in Java Course:

Course Layout:

Week 1 : Overview of Object-Oriented Programming and Java
Week 2 : Java Programming Elements
Week 3 : Input-Output Handling in Java
Week 4 : Encapsulation
Week 5 : Inheritance
Week 6 : Exception Handling
Week 7 : Multithreaded Programming
Week 8 : Java Applets and Servlets
Week 9 : Java Swing and Abstract Windowing Toolkit (AWT)
Week 10 : Networking with Java
Week 11 : Java Object Database Connectivity (ODBC)
Week 12 : Interface and Packages for Software Development

CRITERIA TO GET A CERTIFICATE :

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course. Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

If you have not registered for exam kindly register Through https://examform.nptel.ac.in/

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Category: NPTEL

Programming in modern c++ | week 12, introduction to internet of things week 12, introduction to industry 4.0 and industrial internet of things | week 12, an introduction to artificial intelligence | week 12, the joy of computing using python | week 12, quantum mechanics 1 | week 12, programming in java | week 12, principles of management | week 12, leadership and team effectiveness | week 12, introduction to machine learning | week 12.

Thursday, May 2, 2024

NPTEL Programming in Java Week3 Assignment Solution 2023

Programming-In-Java-Week3-Programming-Assignment-Solutions

NPTEL Programming in Java Week3 All Programming Assignment Solutions – Jan 2023 | Swayam. With the growth of Information and Communication Technology, there is a need to develop large and complex software.

Further, those software should be platform independent, Internet enabled, easy to modify, secure, and robust. To meet this requirement object-oriented paradigm has been developed and based on this paradigm the Java programming language emerges as the best programming environment.

Now, Java programming language is being used for mobile programming, Internet programming, and many other applications compatible to distributed systems.

This course aims to cover the essential topics of Java programming so that the participants can improve their skills to cope with the current demand of IT industries and solve many problems in their own filed of studies.

COURSE LAYOUT

Week 1 : Overview of Object-Oriented Programming and Java
Week 2 : Java Programming Elements
Week 3 : Input-Output Handling in Java
Week 4 : Encapsulation
Week 5 : Inheritance
Week 6 : Exception Handling
Week 7 : Multithreaded Programming
Week 8 : Java Applets and Servlets
Week 9 : Java Swing and Abstract Windowing Toolkit (AWT)
Week 10 : Networking with Java
Week 11: Java Object Database Connectivity (ODBC)
Week 12: Interface and Packages for Software Development

Course Name : “Programming in Java 2023”

Question : 1 This program is related to the generation of Fibonacci numbers.

For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8 th Fibonacci number.

Question : 2 Define a class Point with two fields x and y each of type double . Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double.

Question : 3 A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method . You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

Question : 4 This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum( ) and multiply ( ) . You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.

Question : 5 Complete the code segment to swap two numbers using call by object reference.

IMAGES

NPTEL Programming In Java Week 3 Programming Assignment Answers
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Programming In Java
Programming in Java|| WEEK-3 Programming assignment Answers 2023||NPTEL
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NPTEL PROGRAMMING IN JAVA WEEK 3 ASSIGNMENT ANSWERS

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Data Structure And Algorithms Using Java || NPTEL Week 3 assignment answers

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Programming in Java NPTEL Assignment Answers of Week 3 (2023)
Programming Assignment Answers. Week 3 : Programming Assignment 1. Define a class Point with two fields x and y each of type double. Also, define a method distance (Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double. Complete the code segment given below.
NPTEL Programming In Java WEEK3 Quiz Assignment Solutions
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NPTEL Programming in Java Week3 Assignment Solution July 2023
Course Name : "Programming in Java 2023". Question : 4 This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum ( ) and multiply ( ). You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.
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Java Week 6:Q2 In the following program, a thread class ThreadRun is created using the Runnable interface which prints "Thread using Runnable interface". Complete the main class to create a thread object of the class ThreadRun and run the thread, Java Week 6:Q3 A part of the Java program is given, which can be completed in many ways, for example using the concept of thread, etc. Follow the ...
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NPTEL Programming In Java Assignment 3 Answers July 2023
NPTEL Programming In Java Week 3 Programming Assignment Solutions 2023. Q1. This program is related to the generation of Fibonacci numbers. For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8th Fibonacci number. A partial code is given and you have to complete the code as per the instruction given .
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The assignment 0 for the course Programming In Java has been released. This assignment is based on a prerequisite of the course. Kindly note that marks obtained in this assignment will not be considered for the final assessment. You can find the assignment under Week 0 unit on the left-hand side of your screen.
NPTEL Programming In Java Week 3 Assignment Answers 2023
NPTEL Programming In Java Week 3 Assignment Answers. Q1. Which of the following statement (s) is/are correct about the constructor? Answer: a. Constructors cannot be synchronized in Java. b. Java does not provide a default copy constructor. d. "this" or "super" can be used in a constructor.
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Solution: //Code. These are NPTEL Programming In Java Week 3 Assignment 3 Answers. Question 2. Define a class Point with two fields x and y each of type double. Also, define a method distance (Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double. Solution:
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The Assignment- 3 of Week- 3 Solution ... Here is the much-awaited announcement on registering for the July 2023 NPTEL course certification exam. ... Anyone who knows the answers can reply to anyone's post and the course instructor/TA will also respond to your queries. Please make maximum use of this feature as this will help you learn much ...
NPTEL Programming in Java Assignment 3 Answers 2023
Hello Learners, In this Post, you will find NPTEL Programming in Java Assignment 3 Week 3 Answers 2023. All the Answers are provided below to help the students as a reference don't straight away look for the solutions. NPTEL Programming in Java Assignment 4 Answers Join Group👇. Note: First try to solve the questions by yourself. If you ...
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Course Name : "Programming in Java 2023". Question : 1 This program is related to the generation of Fibonacci numbers. For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8th Fibonacci number. Question : 2 Define a class Point with two fields x and y each of type double. Also, define a method distance (Point p1 ...
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Programming in Java NPTEL Assignment Answers of Week 3 (2023)

Programming Assignment Answers

Week 3 : Programming Assignment 2

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Programming in Java nptel quiz solutions 2023 week 3 solutions

programming in java nptel answers week 3

programming in java nptel quiz solutions 2023

Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully.

programming in java nptel assignment solutions week 3

What is the output of the above code?

Which of the following statement(s) is/are false?

Which of the following statement(s) is/are true?

Consider the following program.

What is the output of the above program?

Which of the following is the output of the above program?

If the program is executed, then what will be the output from the execution?

All classes in java are inherited from which class?

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