nptel java week 7 programming assignment answers

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NPTEL Programming In Java Assignment 7 Answers 2022

• by QuizXp Team
• March 12, 2022 March 14, 2022

Are you looking for the Answers to NPTEL Programming In Java Assignment 7? This article will help you with the answer to the  Nation al Programme on Technology Enhanced Learning  ( NPTEL )  Course ” NPTEL Programming In Java Assignment 7 “

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.

Below you can find the answers for NPTEL Programming In Java Assignment 7

NPTEL Programming In Java Assignment 7 Answers:-

Q1. Complete the following code fragment  to read three integer values from the keyboard and find the sum of the values. Declare a variable “sum” of type int and store the result in it.

Q2. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “Please enter valid data” .If there is no such exception, it will print the “square of the number”.

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Next Week Answers: Assignment 07

Q3. A byte char array is initialized. You have to enter an index value”n”. According to index your program will print the byte and its corresponding char value. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, it will print the required output.

Q4. The following program reads a string from the keyboard and is stored in the String variable “s1”. You have to complete the program so that it should should print the number of vowels in s1 . If your input data doesn’t have any vowel it will print “0”.

Q5. A string “s1” is already initialized. You have to read the index “n”  from the keyboard.  Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, your program should replace the char “a” at the index value “n” of the “s1” ,then it will print the modified string.

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Disclaimer: We do not claim 100% surety of answers, these answers are based on our sole knowledge, and by posting these answers we are just trying to help students, so we urge do your assignment on your own.

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Programming in Java NPTEL Assignment Answers of Week 7(2023)

In this post We are solving the Programming in Java NPTEL Assignment Answers of Week 7(2023)

Answer : c , d

3] Consider the following program.

4] Consider the following program.

5] Which method is used to read b length bytes from the input stream into an array? a] public void read(int b)throws IOException{ { b] public int read(byte[ ] b)throws IOException { } c] public void ] b)throws IOException{} d] public int read(int b)throws IOException { }

10] Which of the following statement(s) is/are true? a] The default delimiters for a Scanner object are the white space characters. b] The Scanner class has instance methods for reading each of the Java primitive types except char. c] The Scanner methods do not throw any checked exceptions. d] The Scanner class can be found in the java.util package.

Week 7 : Programming Assignment 1

1] A byte char array is initialized. You have to enter an index value”n”. According to index your program will print the byte and its corresponding char value. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, it will print the required output.

Week 7 : Programming Assignment 2

2] The following program reads a string from the keyboard and is stored in the String variable “s1”. You have to complete the program so that it should should print the number of vowels in s1 . If your input data doesn’t have any vowel it will print “0”.

Week 7 : Programming Assignment 3

3] A string “s1” is already initialized. You have to read the index “n”  from the keyboard. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, your program should replace the char “a” at the index value “n” of the “s1” ,then it will print the modified string.

Week 7 : Programming Assignment 4

4] Complete the following code fragment to read three integer values from the keyboard and find the sum of the values. Declare a variable “sum” of type int and store the result in it.

Week 7 : Programming Assignment 5

5] Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “Please enter valid data” .If there is no such exception, it will print the “square of the number”.

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NPTEL Programming in Java Week 3 Assignment Answers 2024

1. What will be the output of the following program?

a. Static Method b. Throws a NullPointerException c. Compile-time error d. Run time error

2. What will be the output of the below program.

a. value of a = 20 b. error: cannot assign a value to final variable ‘a’ c. error: unknown variable ‘a’ in class subDemoClass d. value of a = 40

3. 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

4. What will be the output of the below program.

a. 7 7.4 b. 6 6.4 c. 7 9 d. 9 7

5. What will be the output of the following Java code?

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

6. If a variable of primitive datatype in Java is declared as final, then

a. It cannot get inherited b. Its value cannot be changed c. It cannot be accessed in the subclass d. All of the above

7. Members which are not intended to be inherited are declared as

a. Public members b. Protected members c. Private members d. Private or Protected members

8. If a base class is inherited in protected access mode then which among the following is true?

a. Public and Protected members of base class becomes protected members of derived class b. Only protected members become protected members of derived class c. Private, Protected and Public all members of base, become private of derived class d. Only private members of base, become private of derived class

9. Which type of inheritance leads to diamond problem?

a. Single level b. Multi-level c. Multiple d. Hierarchical

10. What will be the output of the below program:

a. error: func() in subDemoClass cannot override func() in superDemoClass b. value of b = 60 c. value of a = 20 d. None of the above

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Programming in Java | NPTEL | Week 7 quiz solutions

This set of MCQ(multiple choice questions) focuses on the  Programming in Java Week 7 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 Programming Assignment 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 Week 7 Solutions” contains 10 questions.

Now, start attempting the quiz.

Programming in Java Week 7 Solutions

Q1. Consider the following program. What will be the output of the above program is executed?

a) It will give compile-time error b) 102 c) 42 d) f

Answer: d) f

Q2. Which method is used to write an array of byte to the current output stream?

a) public void write(int b) throws IOException {{ b) public void flush(byte[] b) throws IOException {} c) public void write(byte[] b) throws IOException {} d) public int write(int b) throws IOException {}

Q3. Which of the followng is NOT a Standard Stream?

a) System.in b) System.out c) System.err d) System.console

Answer: d) System.console

Q4. Which of the following method(s) not included in OutputStream class?

a) close() b) write() c) skip() d) flush()

Answer: c) skip()

Q5. Which of the following method of the BufferedReader class is used for reading lines of text from the console, the file or other input streams?

a) read() b) readLine() c) readByte() d) read(byte[] b)

Answer: b) readLine()

Q6. Consider the following program. What is the output of the above code?

a) java/course/july/2023 b) java/course/july/ c) java/course/ d) 2023

Answer: a) java/course/july/2023

Q7. Which of the following is/are interface(s) in java.io package?

a) FileWriter b) FileFilter c) ObjectOutput d) DataOutput

Answer: b), c), d)

Q8. Fill in the blanks. The class DataInputStream extends _________ and implements the interface _____________.

a) FileInputStream, FileInput b) FilterInputStream, DataInput c) FilterInputStream, FileInput d) FileInputStream, DataInput

Answer: b) FilterInputStream, DataInput

Q9. Which of the following method(s) not included in InputStream class?

a) available() b) reset() c) read() d) flush()

Answer: d) flush()

Q10. Which of the following package contains a large number of stream classes that provide capabilities for processing all types of data?

a) java.awt b) java.io c) java.net d) java.util

Answer: b) java.io

Q1. Which of these is a type of IO stream in Java?

a) Integer stream b) Short stream c) Byte stream d) Character stream

Answer: c), d)

Q2. Which of the following is a class in java.io package?

a) FileReader b) ObjectInput c) ObjectOutput d) DataInput

Q3. What will be the output if the above program is executed?

a) It will give compile-time error b) B c) 66 d) r

Q4. What is the output of the above code?

a) java/program/2023 b) java/programm/ c) java d) 2023

Q5. Which method is used to read b length bytes from the input stream into an array?

a) public void read(int b) throws IOException{{ b) public int read(bute[] b) throws IOException{} c) public void read(byte[] b) throws IOException{} d) public int read(int b) throws IOException{}

Q6. How many standard streams Java can support?

a) 2 b) 3 c) 4 d) 1

Q7. Which of the following stream is different from others?

a) System.in b) System.out c) PrintStream d) FileOutputStream

Q8. Which of the following is used to read a string from the input stream?

a) get() b) readLine() c) getLine() d) read()

Q9. Which of the following class(es) can be use for handling files in Java?

a) java.files b) java.io.File c) java.io d) java.Filehandling

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

a) The default delimiters for a Scanner object are the white space characters b) The Scanner class has instance methods for reading each of the Java primitive types except char c) The Scanner methods do not throw any checked exceptions d) The Scanner class can be found in the java.util package

Answer: a), b), d)

Previous – Programming in Java Week 7 Solutions

Q1. Which of these is method for testing whether the specified element is a file or a directory?

a) IsFile() b) isFile() c) Isfile() d) isfile()

Answer: b) isFile()

Q2. Which of the following is/are NOT Standard Stream(s)?

Q3. What will be the output of the Java code?

a) NPTEL b) NPTEL/JULY/2022 c) /NPTEL/JULY/2022 d) 2022

Answer: d) 2022

Q4. What will be the output if the above program is executed?

a) It will give compile-time error b) It will give run-time error c) j d) 106

Answer: d) 106

Q5. Which method is used to write a byte to the current output stream?

a) public void write(int b) throws IOException b) public void write(byte[] b) throws IOException c) public void flush() throws IOException d) public void close() throws IOException

Answer: a) public void write(int b) throws IOException

Q6. Which method of RandomAccessFile class reads a line from the file and returns it as a String?

a) WriteInt() b) readLine() c) readInt() d) WriteDouble()

Q7. Which of these class is not a member class of java.io package?

a) File b) PrintStream c) StringReader d) Stream

Answer: d) Stream

Q8. Which of the following is/are interface(s) of java.io package?

a) FileReader b) FileWriter c) DataOutput d) DataInput

Q9. In which Java APIs the classes for handling all IO-streams are defined?

a) java.lang b) java.util c) java.io d) java.awt

Answer: c) java.io

Q10. If the program is executed, then what will be the output from the execution?

a) length: 6 b) length: 5 c) length: 0 d) length: 1

Answer: b) length: 5

Previous Course – Week 7 Quiz Solutions

Q1. Which of the following streams contains the classes which can work on character stream?

a) InputStream b) OutputStream c) FileReader d) FileWriter

Q2. In which Java APIs the classes for handling all IO-streams are defined?

Answer: c) j

Q4. Which of the following is the correct output for the ‘try’ portion of the code?

a) Prints the number of bytes in the file b) Prints the number of characters in the file c) Prints ‘true’, if the file is present; else prints ‘false’ d) Prints nothing, as an exception will be caught

Answer: b) Prints the number of characters in the file

Q5. Which methods is used to write an array of byte to the current output stream?

a) public void write(int b)throws IOException b) public void write(byte[] b)throws IOException c) public void flush()throws IOException d) public void close()throws IOException

Answer: b) public void write(byte[] b)throws IOException

Q6. Which of the following is/are Standard Stream(s)?

Answer: a), b), c)

Q7. Which of the following method in java.io package help in clearing the contents of the buffer?

a) flush() b) clear() c) append() d) exit()

Answer: a) flush()

Q8. Which method of RandomAcessFile class reads a line from the file and returns it as a String?

Q9. Which of the following is/are interface(s) of java.io package?

a) DataStreams detects an end-of-file condition by using EOFException, instead of testing for an invalid return value b) DataStreams uses floating point numbers to represent monetary values c) Data streams support I/O of primitive data types d) Object streams support I/O of objects

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

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NPTEL Programming In Java Assignment 7 Answers 2022

NPTEL Programming In Java Assignment 7 Answers 2022:-  All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge

What is Programming In Java?

With the growth of Information and Communication Technology, there is a need to develop large and complex software. Further, that 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, the Java programming language is being used for mobile programming, Internet programming, and many other applications compatible with 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 field of studies. CRITERIA TO GET A CERTIFICATE Average assignment score = 25% of the average of the 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. Below you can find the answers for NPTEL Programming In Java Assignment 7

NPTEL Programming In Java Assignment 7 Answers 2022 {July – Dec}

1. Which of these is method for testing whether the specified element is a file or a directory? a. IsFile() b. isFile() c. Isfile() d. isfile()

2. Which of the following is/are NOT Standard Stream(s)? a. System.in b. System.out c. System.er d. System.console

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3. What will be the output of the Java code? a. NPTEL b. NPTELJULY/2022 c. NPTELJULY/2022 d. 2022

4. What will be the output if the above program is executed? a. It will give compile-time error b. It will give run-time error C. j d. 106

5. Which method is used to write a byte to the current output stream? a. public void write(int b)throwvs IOException b. public void write(bytel ] b}throws IOException C. public vo1d flush(Othrows loException d. public void close( )throws lOException

6. Which method of RandomAccessFile clas reads a line from the file and returns it as a String ? a. Writelnt(). b. readLine() C. readnt() d. WriteDouble()

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7. Which of these class is not a member clas of java.io package? a. File b. PrintStream c. StringReader d. Stream

8. Which of the followving is/are interface(S) of java.io package? a. FileReader b. FileWriter c. DataOutput d. Datalnput

9. In which Java APIs the classes for handling all IO-streams are defined? a. java.lang b. java.util C. java.i0 d. java.awt

10. If the program is executed, then what will be the output from the execution? a. length: 6 b. length: 5 c. length: 0 d. length:1

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NPTEL Programming In Java Assignment 7 Answers 2022:-

MCQ ASSIGNMENT WEEK 7 ANSWERS CLICK HERE

Q1.   Complete the following code fragment to read three integer values from the keyboard and find the sum of the values. Declare a variable “sum” of type int and store the result in it.

Q2.   Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “Please enter valid data” .If there is no such exception, it will print the “square of the number”.

Q3.   A byte char array is initialized. You have to enter an index value”n”. According to index your program will print the byte and its corresponding char value. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, it will print the required output.

Q4.   The following program reads a string from the keyboard and is stored in the String variable “s1”. You have to complete the program so that it should should print the number of vowels in s1 . If your input data doesn’t have any vowel it will print “0”.

Q5.  A string “s1” is already initialized. You have to read the index “n”  from the keyboard.  Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, your program should replace the char “a” at the index value “n” of the “s1” ,then it will print the modified string.

👇 FOR NEXT WEEK ASSIGNMENT ANSWERS 👇

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 7 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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Programming in Java Nptel Week 2 Assignment Answers

Are you looking for Programming in Java Nptel Week 2 Assignment Answers? You’ve come to the right place! Access the latest and most accurate solutions for your Week 2 assignment in the Programming in Java course

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Table of Contents

Programming in Java Nptel Week 2 Assignment Answers (July-Dec 2024)

Q1. Which of the following is the correct way to declare a class in Java? a. public class MyClass {} b. class MyClass[] {} c. public MyClass class {} d. MyClass public class {}

Answer: a. public class MyClass {}

Q2. What is the purpose of a constructor in a class? a. To destroy objects of the class b. To create static methods c. To implement inheritance d. To initialize objects of the class

Answer: d. To initialize objects of the class

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These are Programming in Java Nptel Week 2 Assignment Answers

Q3.Which keyword is used in Java to refer to the current object? a. that b. self c. current d. this

Answer: d. this

Q4.Consider the following code snippet. What will be the output? a. 0 b. 10 c. Compilation error d. Runtime error

Answer: b. 10

Q5. Which of the following demonstrates constructor overloading in Java? a. Defining multiple constructors in a class with different parameter lists b. Defining multiple methods in a class with the same name c. Defining a constructor in a subclass d. Using the super keyword

Answer: a. Defining multiple constructors in a class with different parameter lists

Q6. What is the purpose of the this keyword in the context of avoiding name space collision? a. To call another constructor in the same class b. To refer to the current object c. To differentiate between instance variables and parameters with the same name d. To import another class

Answer: c. To differentiate between instance variables and parameters with the same name

Q7. Which of the following is the correct signature of the main method in Java? a. public void main(String[] args) b. public static void main(String[] args) c. public static void main() d. public main(String[] args)

Answer: b. public static void main(String[] args)

Q8. Which class is used in Java to take runtime data input from the user? a. BufferReader b. UserInputStreamReader c. Scanner d. DataInputStreamReader

Answer: c. Scanner

Q9. What is the output of the following Java code snippet? (\n in output is to be assumed to be the new line character)

a. Hello World\nNumber: 10 b. Hello WorldNumber: 10 c. Hello \nWorld\nNumber: 10 d. Hello World\nNumber: 10\n

Answer: a. Hello World\nNumber: 10

Q10. How do you read a line of text from the console using the Scanner class in Java? a. scanner.readLine() b. scanner.nextLine() c. scanner.getLine() d. scanner.fetchLine()

Answer: b. scanner.nextLine()

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Programming in Java Nptel Week 2 Assignment Answers (Jan-Apr 2024 )

Course name: Programming In Java

These are NPTEL Programming In Java Week 2 Assignment 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

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

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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Programming in Java Nptel Week 2 Assignment Answers (July-Dec 2023 )

Course Name: Programming In Java

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.

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. ——————————–

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

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

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

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Programming in Java Nptel Week 2 Assignment Answers (Jan-Apr 2023 )

Course Name: Programming in Java

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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.

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

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

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

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

Programming In Java Programming Assignment Solution

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

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. ——————————–

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

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

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

More Weeks of Programming In Java: Click Here

Programming in Java Nptel Week 2 Assignment Answers (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

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.

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();

Programming_In_Java_NPTEL

Navigate to Week

Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Week 11 Week 12

Java Week 1:Q1 To find the perimeter and area of a circle given a value of radius.

Java Week 1:Q2 To find the largest among three numbers x, y, and z.

Java Week 1:Q3 Consider First n even numbers starting from zero(0) and calculate sum of all the numbers divisible by 3 from 0 to n. Print the sum.

Java Week 1:Q4 To check whether the number is an Armstrong number or not.

Java Week 1:Q5 To help Ram , find the highest mark and average mark secured by him in “s” number of subjects.

Java Week 2:Q1 To call the method print() in class Student following the concept of inner class.

Java Week 2:Q2 To call the method print() of class Student first and then call print() method of class School.

Java Week 2:Q3 To call print() method of class Question by creating a method named ‘studentMethod()’.

Java Week 2:Q4 To call default constructor first and then any other constructor in the class Answer.

Java Week 2:Q5 To debug the program which is intended to print ‘NPTEL JAVA’.

Java Week 3:Q1 To the generation of Fibonacci numbers.

Java Week 3: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.

Java Week 3: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.

Java Week 3: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.

Java Week 3:Q5 To swap two numbers using call by object reference.

Java Week 4:Q1 To execute the following program successfully. You should import the correct package(s) and/or class(s) to complete the code.

Java Week 4:Q2 To print the current year.

Java Week 4:Q3 The program in this assignment is attempted to print the following output:

Java Week 4:Q4 To call the default method in the interface First and Second.

Java Week 4:Q5 To print the following output.

Java Week 5:Q1 An interface Number is defined in the following program. You have to declare a class A, which will implement the interface Number. Note that the method findSqr(n) will return the square of the number n.

Java Week 5:Q2 This program is to find the GCD (greatest common divisor) of two integers writing a recursive function findGCD(n1,n2). Your function should return -1, if the argument(s) is(are) other than positive number(s).

Java Week 5:Q3 Complete the code segment to catch the ArithmeticException in the following, if any. On the occurrence of such an exception, your program should print “Exception caught: Division by zero.” If there is no such exception, it will print the result of division operation on two integer values.

Java Week 5:Q4 In the following program, an array of integer data to be initialized. During the initialization, if a user enters a value other than integer value, then it will throw InputMismatchException exception. On the occurrence of such an exception, your program should print “You entered bad data.” If there is no such exception it will print the total sum of the array.

Java Week 5:Q5 In the following program, there may be multiple exceptions. You have to complete the code using only one try-catch block to handle all the possible exceptions.

For example, if user’s input is 1, then it will throw and catch “java.lang.NullPointerException“.

Java Week 6:Q1 Complete the code segment to print the following using the concept of extending the Thread class in Java:

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 given code and complete the program so that your program prints the message “NPTEL Java”. Your program should utilize the given interface/ class.

Java Week 6:Q4 Execution of two or more threads occurs in a random order. The keyword ‘synchronized’ in Java is used to control the execution of thread in a strict sequence. In the following, the program is expected to print some numbers. Do the necessary use of ‘synchronized’ keyword, so that, the program prints the output in the following order:

Java Week 6:Q5 Add necessary codes to print the following:

Java Week 7:Q1 Complete the following code fragment to read three integer values from the keyboard and find the sum of the values. Declare a variable “sum” of type int and store the result in it.

Java Week 7:Q2 Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “Please enter valid data” .If there is no such exception, it will print the “square of the number”.

Java Week 7:Q3 A byte char array is initialized. You have to enter an index value”n”. According to index your program will print the byte and its corresponding char value. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, it will print the required output.

Java Week 7:Q4 The following program reads a string from the keyboard and is stored in the String variable “s1”. You have to complete the program so that it should should print the number of vowels in s1 . If your input data doesn’t have any vowel it will print “0”.

Java Week 7:Q5 A string “s1” is already initialized. You have to read the index “n” from the keyboard. Complete the code segment to catch the exception in the following, if any. On the occurrence of such an exception, your program should print “exception occur” .If there is no such exception, your program should replace the char “a” at the index value “n” of the “s1” ,then it will print the modified string.

Java Week 8:Q1 Write a program which will print a pyramid of “ ” ‘s of height “n” and print the number of “ ” ‘s in the pyramid.

Java Week 8:Q2 Write a program which will print a pascal pyramid of “*” ‘s of height “l” .

Java Week 8:Q3 Write a program which will print a pyramid of “numbers” ‘s of height “n” and print the sum of all number’s in the pyramid.

Java Week 8:Q4 Write a program to print symmetric Pascal’s triangle of “*” ‘s of height “l” of odd length . If input “l” is even then your program will print “Invalid line number”.

Java Week 8:Q5 Write a program to display any digit(n) from 0-9 using “7 segment display”.

Java Week 9:Q1 Complete the code to develop a BASIC CALCULATOR that can perform operations like Addition, Subtraction, Multiplication and Division.

Java Week 9:Q2 Complete the code to develop an ADVANCED CALCULATOR that emulates all the functions of the GUI Calculator as shown in the image.

Java Week 9:Q3 Complete the code to perform a 45 degree anti clock wise rotation with respect to the center of a 5 × 5 2D Array as shown below:

Java Week 9:Q4 A program needs to be developed which can mirror reflect any 5 × 5 2D character array into its side-by-side reflection. Write suitable code to achieve this transformation as shown below:

Java Week 9:Q5 Write suitable code to develop a 2D Flip-Flop Array with dimension 5 × 5, which replaces all input elements with values 0 by 1 and 1 by 0. An example is shown below:

Java Week 10:Q1 The following code needs some package to work properly. Write appropriate code to import the required package(s) in order to make the program compile and execute successfully.

Java Week 10:Q2 Write the JDBC codes needed to create a Connection interface using the DriverManager class and the variable DB_URL. Check whether the connection is successful using ‘isAlive(timeout)’ method to generate the output, which is either ‘true’ or ‘false’.

Java Week 10:Q3 Due to some mistakes in the below code, the code is not compiled/executable. Modify and debug the JDBC code to make it execute successfully.

Java Week 10:Q4 Complete the code segment to create a new table named ‘PLAYERS’ in SQL database using the following information.

Java Week 10:Q5 Complete the code segment to rename an already created table named ‘PLAYERS’ into ‘SPORTS’.

Java Week 11:Q1 Complete the code segment to insert the following data using prepared statement in the existing table ‘PLAYERS’.

Java Week 11:Q2 Write the required code in order to update the following data in the table ‘PLAYERS’.

Java Week 11:Q3 Write the appropriate code in order to delete the following data in the table ‘PLAYERS’.

Java Week 11:Q4 Complete the following program to calculate the average age of the players in the table ‘PLAYERS’.

Structure of Table ‘PLAYERS’ is given below: | Coulmn | UID | First_Name | Last_Name | Age | |——–|———|————-|————-|———| | Type | Integer | Varchar(45) | Varchar(45) | Integer | | | | | | |

Java Week 11:Q5 Complete the code segment to drop the table named ‘PLAYERS’.

Java Week 12:Q1 Complete the code to develop an extended version of the ADVANCED CALCULATOR with added special functions that emulates all the functions of the GUI Calculator as shown in the image.

Java Week 12:Q2 A partial code fragment is given. The URL class object is created in try block.You should write appropriate method( ) to print the protocol name and host name from the given url string.

Java Week 12:Q3 Write a program to create a record by taking inputs using Scanner class as first name as string ,last name as string ,roll number as integer ,subject1 mark as float,subject2 mark as float. Your program should print in the format

Java Week 12:Q4 A program code is given to call the parent class static method and instance method in derive class without creating object of parent class. You should write the appropriate code so that the program print the contents of static method() and instance method () of parent class.

Java Week 12:Q5 Write a recursive function to print the sum of first n odd integer numbers. The recursive function should have the prototype

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Nptel programming in java week 7 assignment answers 2022.

Students, it’s time to reveal the hint of programming in java NPTEL week 7 assignment answers. And, identify where you can improve your marks in this assignment.

NPTEL Programming In Java Week 7 Assignment Answers

Q1. Which of these is method for testing whether the specified element is a file or a directory?

a. IsFile()

b. isFile() c. Isfile()

d. isfile()

Answer : b. isFile()

1000+ Students are taking advantage of instant notifications on telegram .

Q2. Which of the following is/are NOT Standard Stream(s)?

a. System.in

b. System.out

c. System.err

d. System.console

Answer : d. System.console

Q3. What will be the output of the Java code?

b. NPTEL/JULY/2022

c. /NPTEL/JULY/2022

Answer: d. 2022

Q4. What will be the output if the below program is executed?

a. It will give compile-time error

b. It will give run-time error

Answer: d. 106

Q5. Which method is used to write a byte to the current output stream?

a. public void write(int b) throws IOException

b. public void write(byte[] b) throws IOException

c. public void flush()throws IOException

d. public void close() throws IOException

Answer: a. public void write(int b) throws IOException

Q6. Which method of RandomAccessFile class reads a line from the file and returns it as aString?

a. WriteInt().

b. readLine()

c. readInt()

d. WriteDouble()

Answer: b. readLine()

Q7. Which of these class is not a member class of java.io package?

b. PrintStream

c. StringReader

Answer: d. Stream

Q8. Which of the following is/are interface(s) of java.io package?

a. FileReader

b. FileWriter

c. DataOutput

d. DataInput

Answer: c. DataOutput

Q9. In which Java APIs the classes for handling all IO-streams are defined?

a. java.lang

b. java.util

d. java.awt

Answer: c. java.io

Q10. Consider the following program.

The file nptel.txt when browse with the Notepad text editor. it shows the content, which is shown below.

__________________________nptel.txt__________________________

____________________________________________________________

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

a. length: 6

b. length: 5

c. length: 0

d. length: 1

Answer: b. length: 5

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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Are you looking for NPTEL Week 1 assignment answers for 2024 for July Dec Session ! If you’re enrolled in any of the NPTEL courses, this post will help you find the relevant assignment answers for Week 1. Ensure to submit your assignments by August 8, 2024.

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Stay tuned for more updates and guides on upcoming assignments and course material.