ATM Interface

package online_reservation_system;
import java.util.*;

class BankAccount
{
	String name;
	String userName;
	String password;
	String accountNo;
	float balance = 100000f;
	int transactions = 0;
	String transactionHistory ="";
	
	public void register() 
	{
		Scanner sc = new Scanner(System.in);
		System.out.print ("\nEnter Your Name - ");
		this.name = sc.nextLine();
		System.out.print ("\nEnter Your Username - ");
		this.userName = sc.nextLine();
		System.out.print ("\nEnter Your Password - ");
		this.password = sc.nextLine(); 
		System.out.print ("\nEnter Your Account Number - ");
		this.accountNo = sc.nextLine();
		System.out.print ("\nRegistration completed..Kindly Login");
     }
	 public boolean login() 
	 {
		 boolean isLogin = false;
			Scanner sc = new Scanner (System.in);
			while (!isLogin)
			{
				System.out.print("\nEnter Your Username - ");
				String Username = sc.nextLine();
				if(Username.equals(Username))
				{
					while ( !isLogin)
					{
						System.out.print("\nEnter Your Password - ");
			            String Password = sc.nextLine();
			            if (Password.equals (password))
			            {
			            	System.out.println("\nLogin successful!!");
			                isLogin = true;
			            }
			            else 
			            {
			            	System.out.println("\nIcorrect Password");
			            }
				}
				}
				else
				{
					System.out.println("\nUsername not found");
				}
			}
			return isLogin;
	 }

		public void withdraw() 
		{
			System.out.print ("\nEnter amount to withdraw - ");
			Scanner sc = new Scanner(System.in);
			float amount = sc.nextFloat ();
			try 
			{

				if (balance >= amount) 
				{
					transactions++;
					balance = amount;
					System.out.println("\nWithdraw Successfully");
					String str = amount + "Rs Withdrawed\n";
					transactionHistory = transactionHistory.concat(str);
					
				}
				else {
					System.out.println("Insufficient Balance");
				}
			} 
			catch (Execption e) 
			{
			  System.out.println("Transaction Not complete");	
			}
		}
	
		public void deposit () 
        {
			System.out.print ("\nEnter amount to deposit ");
			Scanner sc = new Scanner(System.in); 
			float amount = sc.nextFloat();
	        try 
	        {
	        	if ( amount <= 100000f) 
	        	{
	        		transactions++;
	        		balance += amount;
	        		System.out.println("\nSuccessfully Deposited"); 
	        		String str = amount + " Rs deposited\n";
	        		transactionHistory = transactionHistory.concat (str);
	            } 
		    else
		        { 
		    		System.out.println("\nSorry...Limit is 100000.00");
		        }
	        }
	        catch(Exception e)
	        {
	        }
        }
		
		public void transfer()
		{
			Scanner sc = new Scanner(System.in);
			System.out.print("\n Enter Receipent's Name - ");
			String receipent = sc.nextLine();
			System.out.print("\nEnter amount to transfer - ");
			float amount = sc.nextFloat();
			
				try 
				{
					if (balance >= amount)
					{
						if(amount <= 50000f)
						{
							transactions++;
							balance -= amount;
							System.out.println("\nSuccessfully Transfered to " + receipent);
							String str = amount + "Rs transfered to " + receipent + "\n";
							transactionHistory = transactionHistory.concat(str);
						}
						else
						{
							System.out.println("\n Sorry limit is 50000.00");
						}
					 }
					else 
					{
						System.out.println("\nInsufficient Balance");
					}
				}
			    catch(Exception e)
				{	
				}
           }
		public void checkBalance()
		{
			System.out.println("\n" + balance + "Rn");
		}
		
		public void transactionHistory()
		{
			if(transactions == 0)
			{
				System.out.println("\nEmpty");
			}
			else 
			{
				System.out.println("\n" + transactionHistory);
			}
	  }
}
		


public class AtmInterface
{

	public static int takeIntegerInput(int limit)
	{
	    int input = 0;
	    boolean flag = false;
		while ( !flag )
		{
			try
			{
				Scanner sc = new Scanner(System.in);
				input = sc.nextInt();
				flag = true;
				if (flag && input > limit || input <1) 
				{
					System.out.println("Choose the number between 1 to " + limit);
				}
			}
		catch(Exception e)
		{
			System.out.println("Enter only integer value");
			flag = false;
		}
		};
		return input;
	}
	
	public static void main(String[] args)
	{
		System.out.println("\n******WELCOME TO THE BANK ATM SYSTEM********\n ");
		System.out.println("1. Register \n2.EXIT");
		System.out.println("Enter Your Choice - ");
		int choice = takeIntegerInput(2);
		if (choice == 1)
		{
			BankAccount b = new BankAccount();
			b.register();
			while(true)
			{
				System.out.println("\n1.Login \n2.EXIT");
				System.out.println("Enter Your choice - ");
				int ch = takeIntegerInput(2);
				if(ch == 1)
				{
					if(b.login())
					{
						System.out.println("\n\n***********WELCOME BACK " + b.name + "***********\n");
						boolean isFinished = false;
						while(!isFinished)
						{
							System.out.println("\n1.Withdraw \n2.Deposit \n3.Transfer \n4.Check Balance \n5.Transaction History \n6.EXIT");
							System.out.println("\nEnter Your Choice");
							int c = takeIntegerInput(6);
							switch(c) 
							{
							case 1:
								b.withdraw();
								break;
							case 2:
								b.deposit();
								break;
							case 3:
								b.transfer();
								break;
							case 4:
								b.checkBalance();
								break;
							case 5:
								b.transactionHistory();
								break;
							case 6:
								isFinished = true;
								break;	
							}
						}
					}
				}
				else
				{
					System.exit(0);
				}
			}
		}
		else 
		{
			System.exit(0);
		}
	}
}