Untitled

import java.util.ArrayList;
import java.util.Scanner;

public class PersonalDetails {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        boolean firstAssigned = false; //This variable is to know whether 1st iteration has assigned some value or not
        int birthYear = 0; String name = ""; //These variable stores birth Year and name from input
        int lengthOfName = 0; //This variable stores the length of name
        int sum = 0; //This variable stores the sum of birth years
        int lenthOfLongestName = 0; //This variable stores the length of Longest Name
        String longestName = ""; //This variable stores the longest name
        int i = 0; //This variable stores the numbers of inputs untill input is empty
        double average = 0.0; //This variable stores the average of all birth years
        while(true){
            //This loop takes input from user and then prints longest name
            //and average of all the birth years
            String str = scanner.nextLine();
            if(str.isEmpty()){
                //This block of code breaks loop when input is empty
                break;
            }
            String[] words = str.split(",");
            birthYear = Integer.valueOf(words[1]);
            name = words[0];
            lengthOfName = name.length();
            if(firstAssigned == false){
                lenthOfLongestName = lengthOfName;
                longestName = name;
                firstAssigned = true;
            }
            if(lengthOfName > lenthOfLongestName){
                lenthOfLongestName = lengthOfName;
                longestName = name;
            }
            sum = sum + birthYear;
            i++;
        }
        average = 1.0 * sum/i;
        System.out.print("Longest name: " + longestName + "\n"
        + "Average of birth years: " + average);
    }
}