PLEASE INCLUDE COMMENTS
In java
Create a Java Program
/*
* Java program to add even numbers recurssively
*/
import java.util.Scanner;
import java.util.*;
// Declaration of class
class recSum{
// main method execution starts from here
public static void main(String[] args){
// Declaration of variable
int choice = 0;
// Iterates while user input quit condition
do{
// promot message for user
System.out.print("\nEnter number: ");
int number = getInteger(); // call function
// it checks for possitive integer no
if(number > 0){
recEvenSum(number, 0);
}
else{
System.out.println("Enter Possitive no only");
}
// promot message for user
System.out.println("\nPress 0 to continue, 1 to Quit");
choice = getInteger(); // call function
}while(choice != 1); // checks for terminating condition
}
// this function return integer value input from user
public static int getInteger(){
// create object for scanner class
Scanner i = new Scanner(System.in);
int number = 0;
// iterate while valid input
for(boolean test = false; test == false;){
try{
number = i.nextInt(); // get input from console
test = true;
return number; // return to calling function
}
// throws error if input not integer
catch(InputMismatchException e){
System.out.println("Invalid input");
}
i.nextLine(); // nextInt() function tripping on subsequent calls so its required
}
return number;
}
// recursive function for finding sum of even no's takes two parameters
public static void recEvenSum(int number, int sum){
// iterate while greater than 0
if(number >= 0){
// checks for even no
if(number % 2 == 0){
sum += number; // add number to sum
recEvenSum(number - 2, sum); // recursive call
}else
recEvenSum(number - 1, sum);
}else{ // print final sum
System.out.println("The recursive Even no's Sum: " + sum );
}
}
}
PLEASE INCLUDE COMMENTS In java Create a Java Program Add the following comments at the beginning...
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