NPTEL Programming In Java Assignment 5 Answers 2022 (Week 5)

NPTEL Programming In Java Assignment 5 Answers 2022 :- Here All The Questions and Answers Provided to Help All The Students and NPTEL Candidate as a Reference Purpose, It is Mandetory to Submit Your Weekly Assignment By Your Own Understand Level.

Are you looking for the Assignment Answers to NPTEL Programming In Java Assignment 5 Answers 2022? If Yes You are in Our Great Place to Getting Your Solution, This Post Should be help you with the Assignment answer to the National Programme on Technology Enhanced Learning (NPTEL) Course “NPTEL Programming In Java Week 5 Assignment Solution 2022”

NPTEL Programming In Java

From My Side : With the expansion of knowledge and Communication Technology, there’s a desire to develop massive and complicated package. Further, those package ought to be platform freelance, web enabled, straightforward to switch, secure, and robust. to satisfy this demand object-oriented paradigm has been developed and supported this paradigm the Java artificial language emerges because the best programming atmosphere. Now, Java artificial language is being employed for mobile programming, web programming, and plenty of alternative applications compatible to distributed systems. This course aims to hide the essential topics of Java programming in order that the participants will improve their skills to address the present demand of IT industries and solve several issues in their own filed of studies.

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.

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NPTEL Programming In Java Assignment 5 Answers 2022

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.

Solution Code : – 

import java.util.Scanner;

interface Number {
int findSqr(int i); // Returns the square of n
}
class A implements Number {
//Define a method to find the square of a number
int i, square;
public int findSqr(int i) {
square=i*i;
return square;
}
}
public class Question5_1{
public static void main (String[] args){
A a = new A(); //Create an object of class A
// Read a number from the keyboard
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
System.out.print(a.findSqr(i));
}
}

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).

Solution Code :-

import java.util.Scanner;

interface GCD {
public int findGCD(int n1,int n2);
}
class B implements GCD {
int n1,n2;

//Create a method to calculate GCD
public int findGCD(int n1, int n2){
if(n1==0&& n2==0) {
return -1;
}
else if(n2 == 0){
return n1;
}

else {
return findGCD(n2, n1%n2);
}
}
}
public class Question5_2{
public static void main (String[] args){
B a = new B(); //Create an object of class B
// Read two numbers from the keyboard
Scanner sc = new Scanner(System.in);
int p1 = sc.nextInt();
int p2 = sc.nextInt();
System.out.print(a.findGCD(p1,p2));
}
}

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.

Solution Code :-

import java.util.Scanner;

public class Question5_3 {
public static void main(String[] args) {
int a, b;
Scanner input = new Scanner(System.in);

int result;
a = input.nextInt();
b = input.nextInt();

// try block to divide two numbers and display the result
try {
result = a/b;
System.out.println(result);
}
// catch block to catch the ArithmeticException
catch (ArithmeticException e) {
System.out.println(“Exception caught: Division by zero.”);
}

}
}

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.

Solution Code :-

//Prefixed Fixed Code:
import java.util.*;
public class Question5_4{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int length = sc.nextInt();
// create an array to save user input
int[] name = new int[length];
int sum=0;//save the total sum of the array.
try{
for(int i=0;i<length;i++){
int userInput=sc.nextInt();
name[i] = userInput;
sum=sum+name[i];
}
System.out.println(sum);
}
catch(InputMismatchException e) {
System.out.println(“You entered bad data.”);
}
}
}

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“.

Solution Code :-

import java.util.Scanner;
public class Question5_5{
public static void main (String args[ ] ) {
Scanner scan = new Scanner(System.in);
int i = scan.nextInt();
int j;
try {
switch (i) {
case 0 :
int zero = 0;
j = 92/ zero;
break;
case 1 :
int b[ ] = null;
j = b[0] ;
break;
default:
System.out.println(“No exception”);
}
}
// catch block
catch (Exception e) {
System.out.println(e) ;
}

}
}

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