What it want from me?

package com.codegym.task.task04.task0427; /* Describing numbers */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader str = new BufferedReader(new InputStreamReader(System.in)); String str1 = str.readLine(); int num = Integer.parseInt(str1); if (num >= 1 && num <= 999) { Double dnum = Double.parseDouble(str1); int str1_len = str1.length(); //System.out.println(num + "," + dnum + "," + str1_len + evenOrNot(num, dnum)); System.out.println(evenOrNot(num, dnum) + HowManyDig(str1_len)); } } public static String HowManyDig(int a) { if (a == 1) return "single-digit number"; else if (a == 2) return "two-digit number"; else if (a == 3) return "three-digit number"; } public static String evenOrNot(int b, Double c) { if ((c / 2 - b / 2) > 0) return "odd "; else return " even"; } }