NumberGame (1) - NumberGame class (main)

import java.util.Scanner;

public class NumberGame
{
    public static void main (String[] args)
    {
        //Initial print statement. Prompts the user for his/her name
        System.out.println("Hello! Please begin by entering your name: ");

        //Creates a Scanner to allow the user to enter their name
        Scanner scan1 = new Scanner (System.in);
        String name = scan1.nextLine();

        //Explains the game to the user. Instructions are broken up into smaller sections.
        System.out.println("Thanks " + name + "! Let's  begin by explaining the game.");
        System.out.println();
        System.out.println("The object of the game is to correctly guess the secret number.");
        System.out.println("The number is randomly generated, and is different every time you play.");
        System.out.println();
        System.out.println("***Press ENTER to Continue***");
        scan1.nextLine();
        System.out.println("There are three levels, each harder than the last.");
        System.out.println("In level one, you have three chances to correctly guess the number. The number will be anywhere from 1 to 10.");
        System.out.println("In level two, you have five chances to correctly guess the number. The number will be anywhere from 1 to 50.");
        System.out.println("In level three, you have seven chances to correctly guess the number. The number will be anywhere from 1 to 100.");
        System.out.println();
        System.out.println("***Press ENTER to Continue***");
        scan1.nextLine();
        System.out.println("To guess a number, type the number in and press enter.");
        System.out.println("You will be told whether or not you correctly guessed the number.");
        System.out.println("If you guess incorrectly, you will be given a hint as to whether the number is higher or lower than what you guessed.");
        System.out.println("If you run out of chances to correctly guess the number, then you lose.");
        System.out.println();
        System.out.println("***Press ENTER to Start Game***");
        scan1.nextLine();
        System.out.println("Please begin by selecting a level:");
        System.out.println();
        System.out.println("Level One - numbers 1-10 (type \"1\" to play)");
        System.out.println("Level Two - numbers 1-50 (type \"2\" to play)");
        System.out.println("Level Three - numbers 1-100 (type \"3\" to play)");
        System.out.println();
        System.out.println("Type \"exit\" to end the game.");

        //Allows the program to continue running if the user selects an invalid number or string during the level selection.
        while (true)
        {
            doMethod();
        }
    }

    public static void doMethod()
{
        //Creates a second Scanner to allow the user to select the level they wish to play
        Scanner scan2 = new Scanner(System.in);
        String level = scan2.nextLine();

        //Level One
    {
        if (level.equals("1"))
        {
            System.out.println("You chose Level 1. You have 3 chances to guess the number.");

            int num = LevelOne.randInt();
            int guess;
            int chances=3;
            boolean win = false;

            while (win == false)
            {
                if (chances == 0)
                {
                    System.out.println();
                    System.out.println("You have no chances left! You lose!");
                    System.out.println("The number was " + num + ".");
                    System.out.println();
                    System.out.println("Thanks for playing!");

                    System.exit(0);
                }

                else
                {
                System.out.println();
                System.out.println("Guess a number from 1 to 10.");
                guess = scan2.nextInt();
                chances--;

                    if (guess < num)
                    {
                        System.out.println("Your guess was too low.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess > num)
                    {
                        System.out.println("Your guess was too high.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess == num)
                    {
                        win = true;
                    }
                }
            }
            System.out.println("You win! Congratulations!");
            System.out.println("The number was " + num + ".");
            System.out.println();
            System.out.println("Thanks for playing!");

            System.exit(0);
        }

        //Level Two
        else if (level.equals("2"))
        {
            System.out.println("You chose Level 2. You have 5 chances to guess the number.");

            int num = LevelTwo.randInt();
            int guess;
            int chances=5;
            boolean win = false;

            while (win == false)
            {
                if (chances == 0)
                {
                    System.out.println();
                    System.out.println("You have no chances left! You lose!");
                    System.out.println("The number was " + num + ".");
                    System.out.println();
                    System.out.println("Thanks for playing!");

                    System.exit(0);
                }

                else
                {
                System.out.println();
                System.out.println("Guess a number from 1 to 50.");
                guess = scan2.nextInt();
                chances--;

                    if (guess < num)
                    {
                        System.out.println("Your guess was too low.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess > num)
                    {
                        System.out.println("Your guess was too high.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess == num)
                    {
                        win = true;
                    }
                }
            }
            System.out.println("You win! Congratulations!");
            System.out.println("The number was " + num + ".");
            System.out.println();
            System.out.println("Thanks for playing!");

            System.exit(0);
        }

        //Level Three
        else if (level.equals("3"))
        {
            System.out.println("You chose Level 3. You have 7 chances to guess the number.");

            int num = LevelTwo.randInt();
            int guess;
            int chances=7;
            boolean win = false;

            while (win == false)
            {
                if (chances == 0)
                {
                    System.out.println();
                    System.out.println("You have no chances left! You lose!");
                    System.out.println("The number was " + num + ".");
                    System.out.println();
                    System.out.println("Thanks for playing!");

                    System.exit(0);
                }

                else
                {
                System.out.println();
                System.out.println("Guess a number from 1 to 100.");
                guess = scan2.nextInt();
                chances--;

                    if (guess < num)
                    {
                        System.out.println("Your guess was too low.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess > num)
                    {
                        System.out.println("Your guess was too high.");
                        System.out.println();
                        System.out.println("Attempts remaining: " + chances);
                    }
                    else if (guess == num)
                    {
                        win = true;
                    }
                }
            }
            System.out.println("You win! Congratulations!");
            System.out.println("The number was " + num + ".");
            System.out.println();
            System.out.println("Thanks for playing!");

            System.exit(0);
        }

        //Allows the user to exit the program if they wish
        else if (level.equals("exit"))
        {
            System.exit(0);
        }

        //Allows the user to enter another input if their first one was invalid
        else
            System.out.println("Please select 1, 2, or 3, or type \"exit\" to end the game.");

    }

}

}