Atm.java

import java.util.Scanner;
 
public class Atm 
{
    public static void main(String[] args) 
    {
        double balance = 100.00;
        double withdrawalAmount;
        double depositAmount;
        boolean sentinelValue = true;
        
        String userInput;
        String sentinel;
        Scanner scnr = new Scanner(System.in);
        Scanner in = new Scanner(System.in);

        while (sentinelValue == true)
        {
        	System.out.println("Type an action...");
        	System.out.println("Balance, Deposit or Withdrawal: ");
        	userInput = in.nextLine();
        	
        	if (userInput.equalsIgnoreCase("deposit"))
        	{
        		System.out.print("Enter amount to deposit: ");
            	depositAmount = in.nextDouble();
            	balance += depositAmount;
            	System.out.println("Your current balance is: " + balance + "\n");
            	System.out.print("Continue? (Y or N)\n");
            	sentinel = scnr.nextLine();
            	if (sentinel.equalsIgnoreCase("y"))
            	{
            		sentinelValue = true;
            	}
            	else
            	{
            		sentinelValue = false;
            	}
            }
        	else if (userInput.equalsIgnoreCase("withdrawal"))
        	{
        		System.out.print("Enter amount to withdrawal: ");
            	withdrawalAmount = in.nextDouble();
            	balance -= withdrawalAmount;
            	if (balance < 0 )
            	{
            		System.out.println("Sorry, you cannot take more than is available.\n");
            		balance = 100.00;
            	}
            	System.out.println("Your current balance is: " + balance + "\n");
            	System.out.print("Continue? (Y or N)\n");
            	sentinel = scnr.nextLine();
            	if (sentinel.equalsIgnoreCase("y"))
            	{
            		sentinelValue = true;
            	}
            	else
            	{
            		sentinelValue = false;
            	}
            	
        	}
        	else if (userInput.equalsIgnoreCase("balance"))
        	{
        		System.out.print("Your current balance is: " + balance + "\n");
        		System.out.print("Continue? (Y or N)\n");
            	sentinel = scnr.nextLine();
            	if (sentinel.equalsIgnoreCase("y"))
            	{
            		sentinelValue = true;
            	}
            	else
            	{
            		sentinelValue = false;
            	}
        	}
        	else
        	{
        		System.out.print("The string you entered does not match an action, try again.\n"); 
        		System.out.print("Continue? (Y or N)\n");
            	sentinel = scnr.nextLine();
            	if (sentinel.equalsIgnoreCase("y"))
            	{
            		sentinelValue = true;
            	}
            	else
            	{
            		sentinelValue = false;
            	}      	
        	}
        } // end while
    } // end main
} // end Atm