atm.java

this is a relatively simple program.

        switch( option )
        {
            case 1:
                withDrawCash( myAccount );                               
            break;
            
            case 2:
                transferCash( myAccount );
                break;
                
            case 3:
                depositCash( myAccount );
                    break;
                    
            case 4:
                displayBalance( myAccount );
                    break;
            case 5:
                return;
                
            default:
                System.out.println("\nINVALID OPTION! Enter option no. again\n");
        }
    }
 }

    private void transferCash( Account myAccount )
    {
    System.out.println("\n***** Transfer Cash Menu *****\n");
    Scanner input = new Scanner( System.in );
    int amount = 0;
    int receivingAccount = 0;
    
    while( true )
    {
        System.out.print("\nEnter the amount in multiples of 500: ");
        amount = input.nextInt();
        if( (amount % 500) == 0 )
        {
            if( myAccount.getBalance() >= amount )
                break;            
            else
                System.out.print("\nERROR! Your account doesnot contain that" +
                        "much amount.\n\n");
        }
    }
    
    while(true)
    {
        System.out.print("\nEnter the account number to which you want to transfer: ");
        receivingAccount = input.nextInt();
        if( receivingAccount > 0 )
        {
            if( isAccount( receivingAccount ) )
                break;
            else
                System.out.println("\nERROR! Given account doesnot exist.\n");
        }            
    }

    String ownerName = getOwnerName(receivingAccount);
    System.out.print("\nYou wish to deposit Rs. " + amount + " in account held by " +
    ownerName + " ; \nIf this information is correct please re-enter the account number: " );
    
    if( input.nextInt() == receivingAccount ) 
    {
        depositCash( receivingAccount, amount );
        System.out.print("\nTransaction Confirmed.\n");
        myAccount.setBalance( myAccount.getBalance() - amount );
        
        while( true )
            {
            Scanner input2 = new Scanner( System.in );
                System.out.print("\nDo you wish to print a receipt(Y/N)?  ");
                String ans = input2.nextLine();
                if( ans.equalsIgnoreCase("y") )
                {
                   System.out.println("Account no.: " + myAccount.getAccountNo() ); 
                   System.out.println("Ammount deposited: " + amount );
                   System.out.println("Balance: " + myAccount.getBalance() ); 
                   break;
                }
                else if( ans.equalsIgnoreCase("n") )
                {
                    break;
                }
            }
    }
    else
    {
        System.out.println("\nTRANSACTION NOT CONFIRMED! Re-entered account doesnot" +
                "matched with the previous one.");
    }    
    
}

    private int showCustomerMenu()
    {
    System.out.println("\n\n***** Customer Menu *****\n");
    System.out.println("Press 1 to WITHDRAW cash.");
    System.out.println("Press 2 to TRANSFER cash.");
    System.out.println("Press 3 to DEPOSIT cash.");
    System.out.println("Press 4 to DISPLAY balance.");
    System.out.println("Press 5 to EXIT.\n");
    
    Scanner input = new Scanner( System.in );
    int numb = input.nextInt();
    
    return numb;
 }

    public boolean isAccount( int accountNo )
    {
    for( int i = 0; i < accountsList.size(); i++ )
    {
        Object o = accountsList.get(i);
        Account c = (Account)o;
        
        if( c.getAccountNo() == accountNo )
            return true;
    }
    
    return false;
}

    public String getOwnerName( int accountNo )
    {
    for( int i = 0; i < accountsList.size(); i++ )
    {
        Object o = accountsList.get(i);
        Account c = (Account)o;
        
        if( c.getAccountNo() == accountNo )
            return c.getName();
    }
    
    return null;
}
 
    public boolean depositCash( int accountNo, double amount )
    {
    for( int i = 0; i < accountsList.size(); i++ )
    {
        Object o = accountsList.get(i);
        Account c = (Account)o;
        
        if( c.getAccountNo() == accountNo )
        {
            c.setBalance( c.getBalance() + amount );
            return true;
        }
    }
    
    return false;

}
 
    private void depositCash( Account myAccount )
    {
    System.out.println("\n***** Deposit Cash *****\n");
    Scanner input = new Scanner( System.in );
    double amount; 
    
    while( true )
    {
        System.out.print("\nEnter the amount to be Deposited: ");
        amount = input.nextDouble();    
        if( amount < 0 )
            System.out.println("\nERROR! Invalid amount entered.\n");
        else
            break;
    }
        
        myAccount.setBalance( myAccount.getBalance() + amount );
        System.out.println("\nCash Deposited Successfully.");
            
            while( true )
            {
                Scanner input2 = new Scanner( System.in );
                System.out.print("Do you wish to print a receipt(Y/N)? ");
                String ans = input2.nextLine();
                
                if( ans.equalsIgnoreCase("y") )
                {
                   System.out.println("Account no.: " + myAccount.getAccountNo() ); 
                   System.out.println("Ammount Deposited: " + amount );
                   System.out.println("Balance: " + myAccount.getBalance() ); 
                   break;
                }
                else if( ans.equalsIgnoreCase("n") )
                {
                    break;
                }
            }
        
}
    
    private void displayBalance( Account myAccount )
    {        
        System.out.println( "\nAccount No.: " + myAccount.getAccountNo() );
        System.out.println( "\nBalance: " + myAccount.getBalance() );
    }
    
    private void showAccountWelcomeMessage()
    {
    System.out.println("\nCONGATULATIONS! Your Account has been successfully created.\n");
 }
    
    public void openExistingAccount()
    {
        Scanner input = new Scanner( System.in );

        while( true )
        {
            System.out.println("To access your account: ");
            System.out.print("Enter Login: "); 
            String login = input.nextLine();        
            
            System.out.print("Enter Pin code: "); 
            int pinCode = input.nextInt();
            
            if( isValidCustomer( login, pinCode ) )
            {
                enterAccount( returnValidAccount( login, pinCode ) );
                return;
            }
            else
            {
                System.out.println("\nACCESS DENIED: Either the login or Pin code " +
                        "is incorrect\n");
                return;
            }
        }
                
    }
    
    private boolean isValidCustomer( String login, int pinCode )
    {
        for( int i = 0; i < accountsList.size(); i++ )
     {
        Object o = accountsList.get(i);
        Account c = (Account)o;
        
        if( c.getLoginId().equals( login ) )
        {
            if( c.getPinCode() == pinCode )
            return true;
    }
        }
    
        return false;    
    }
    
    private Account returnValidAccount( String login, int pinCode )
{
    for( int i = 0; i < accountsList.size(); i++ )
     {
        Object o = accountsList.get(i);
        Account c = (Account)o;
        
        if( c.getLoginId().equals( login ) )
        {
            if( c.getPinCode() == pinCode )
            return c;
        }
     }
        
        return null;
}
    
 
}// end of class