Beginner Code

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

    public static void main(String[] args) {
        Scanner read = new Scanner(System.in);
        //declare our lists for 'longest' and 'tooShort' variables
        List<String> longest = new ArrayList<>();
        List<String> tooShort = new ArrayList<>();
        while (true) {
            //take an entry as 'string' variable and split into 'split' string array
            String string = read.nextLine();
            String[] split = string.split(",");
            //automatically index current entry to be removed later if proven invalid
            //this also provides a "seed" for the loop during its first iteration
            longest.add(split[0]);
            //while loop ends if current entry is blank
            if (string.equals("")) {
                break;
            }
            //check through each iteration of longest variable for if current entry is either greater than or less than
            for (String s : longest) {
                if (split[0].length() > s.length()) {
                    //current entry is greater than this 'longest' iteration, add iteration to 'tooShort' variable
                    tooShort.add(s);
                } else if (split[0].length() < s.length()) {
                    //current entry is less than this 'longest' iteration, add current entry to 'tooShort' variable
                    //and break to avoid adding current entry to 'tooShort' variable multiple times unnecessarily
                    tooShort.add(split[0]);
                    break;
                }
            }
            //run through 'tooShort' iterations and remove each from 'longest' variable
            for (String s : tooShort) {
                longest.remove(s);
            }
        }
        //begin to print names
        //check if there are multiple names with the longest length
        boolean multipleNames = false;
        if (longest.size() > 2) {
            multipleNames = true;
        }
        if (!multipleNames) {
            System.out.print("Longest name: ");
        } else {
            System.out.print("Longest names: ");
        }
        //if no multiple names determined, just print the only iteration of 'longest'
        //otherwise print with ", " until second to last iteration
        for (int i = 0; i < longest.size(); i++) {
            if (!multipleNames) {
                System.out.print(longest.get(i));
            } else if (i < longest.size() -2) {
                System.out.print(longest.get(i) + ", ");
            } else {
                System.out.print(longest.get(i));
            }
        }
    }