ZCW-TooLargeTooSmall-BlueJ/Main.java

/**
 * Created by iyasuwatts on 10/17/17.
 */
 import java.util.Scanner;

 public class Main{

 public static void main(String[] args){

   Scanner stdin = new Scanner(System.in);

   int num = 21, usrNum, sum = 0;
   boolean isValid = false;
   boolean isTrue = false;

   while(!isValid){
     System.out.println("Enter a number (between 0 and 50) to guess the mystery number (-1 to exit): ");
     usrNum = stdin.nextInt();
     if(usrNum == -1){
       break;
     }
     while(!isTrue){
       if(usrNum>=0 && usrNum<=50){
         isTrue = true;
       } else if(usrNum == -1){
         break;
       } else{
         System.out.println("Number out of range\n");
         System.out.println("Enter a number (between 0 and 50) to guess the mystery number (-1 to exit): ");
         usrNum = stdin.nextInt();
       }
     }

     if(usrNum == -1){
       break;
     }
     if(usrNum<num){
       System.out.println("Incorrect... number is to small\n");
     } else if(usrNum>num){
       System.out.println("Incorrect... number is to large\n");
     } else if(usrNum == num){
       System.out.println("Correct! The number was " + num);
       isValid = true;
     }
     sum++;
   }
    System.out.println("Total number of tries is: " + sum);
  }
 }