Question

This is Java

In this problem we will write a program that asks the user to enter a) The user's first name and b) a series of integers separated by commas. The integers may not include decimal points nor commas. The full string of numbers and commas will not include spaces either, just digits and commas. An example of valid input string is:        7,9,10,2,18,6

The string must be input by the user all at once; do not use a loop to read each number one at a time. The purpose of this assignment is to learn to use the String methods. The program will calculate and display the following data:

• User name
• Sum of all numbers in the string
• A count of how many numbers were entered
• Average of all the numbers in the string expressed to one decimal place.

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Here a new java program with name "Main.java" is created, which contains following code.

Main.java :

import java.util.*;

public class Main
{

   public static void main(String[] args) {
   //creating object of Scanner class
   Scanner sc=new Scanner(System.in);
   //asking user to enter first name
       System.out.print("Enter First Name : ");
       //reading first name
       String username=sc.next();
       //asking user to enter numbers seprated by commas
       System.out.print("Enter Numbers separated by commas : ");
       //reading numbers
       String numString=sc.next();
      //spliting string
       String[] strSplit = numString.split(",");
       //declared variable to store sum , count and average
       int sum=0,count=0;
       double average=0;
       //using for loop to make sum of numbers in the string
       for (String num :strSplit)
       {
       sum=sum+Integer.parseInt(num);
       count++;//increment count
       }
       //calculate average
       average=sum/count;
       String avg=String.format("%.1f", average);
       //display details
       System.out.println("Username : "+username);//display username
       System.out.println("Sum : "+sum);//display sum
       System.out.println("Count : "+count);//display count
       System.out.println("Average : "+avg);//display average
         
   }
  
}

======================================================

Output : Compile and Run Main.java to get the screen as shown below

Screen 1 :Main.java

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.