Miscellany

import java.util.*;public class BankService{	BankAccount account = null;		public BankService(BankAccount theAccount)	{		account = theAccount; //setting the account		 		}	public String doService(String answer)	{		if(answer.indexOf("deposit") >=0)		{			StringTokenizer token =  new StringTokenizer(answer);			token.nextToken();			String Number = token.nextToken();			int Num = Integer.parseInt( Number );       		account.deposit(Num);       		answer = "" + Num;       	}		else if (answer.indexOf("withdraw")>=0)		{			StringTokenizer token =  new StringTokenizer(answer);			token.nextToken();			String Number = token.nextToken();			int Num = Integer.parseInt( Number );			account.withdraw(Num);       		answer = "" + Num;			}		else if (answer.indexOf("balance")>=0)		{			System.out.println("Your balance is : " + account.getBalance());		}		else //added		{			answer = "Sorry, I don't understand this request.";		}		return answer;			}	}