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JDL

Fri Oct 19, 2007 1:05 pm


Bank Account Program - Transaction History

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I am trying to build some sort of baking program for a school assignment. Iv meet most of the requirements but i need help logging transactions done during the active process. It does not need to save the information to a text file or anything. All it needs to do is keep a temporary memory of all transactions done. Here is what I have in terms of code.


MainProgram


import java.util.*; 

public class MainProgram {
    
    public static void main(String[] args) {

//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
	Scanner scanner;    	
	Date today;
	String lineSeparator = System.getProperty("line.separator");
	today = new Date();														//this initilizes the date
	scanner = new Scanner(System.in);											//initializes the scanner so input is possible
	scanner.useDelimiter(lineSeparator);
	double transAmount;
	int transOption;
	int transNumber;
	boolean userWantsToQuit = false;
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------

    	//create some bank account objects
    	BankAccount b1 = new BankAccount("Bob ", 1001, 1000.0);
    	BankAccount b2 = new BankAccount("Joe ", 1002, 0.0);
    	BankAccount b3 = new BankAccount("Jack", 1003, 500.0);
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------    	
		while (!userWantsToQuit){
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
		System.out.println("The Time Is: " + today);
	    	System.out.println("Welcome To The Bank Account Program.");
	    	System.out.println("There Are Three Registered Account Holders.");
	    	System.out.println("");
	    	System.out.println("");
	    	System.out.println("		Here Are The Account Inquiries");
	    	System.out.println("-------------------------------------------------------------------------------------");
	    	System.out.println(b1);
	    	System.out.println("-------------------------------------------------------------------------------------");
	    	System.out.println(b2);
	    	System.out.println("-------------------------------------------------------------------------------------");
	    	System.out.println(b3);
	    	System.out.println("-------------------------------------------------------------------------------------");
	     System.out.println("");
	     System.out.println("");
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------     	
	     	System.out.println("Would You Like To Do:" );
	    		System.out.println("-------------------------------------------------------------------------------------");
	     	System.out.println("Withdrawl			(1)");
	     	System.out.println("Deposit			(2)");
	     	System.out.println("Account Summery	(3)");
	     	System.out.println("History			(4)");
	    		System.out.println("-------------------------------------------------------------------------------------");
				transOption = scanner.nextInt();
	     	System.out.println("");
	     	System.out.print("For Which Account - Enter In An Account Number: ");
				transNumber = scanner.nextInt();     	     	     	
	     	System.out.println("");
	     	
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
					if(transNumber == b1.accountNumber && transOption == 1){
   					     System.out.println("How Much Will You Withdraw");
						transAmount = scanner.nextDouble();
						b1.withdraw(transAmount);
	     			}
	     			else if(transNumber == b1.accountNumber && transOption == 2){
	    					System.out.println("How Much Will You Deposit");
						transAmount = scanner.nextDouble();
	     				b1.deposit(transAmount);
	     			}
	     			else if(transNumber == b1.accountNumber && transOption == 3){
	     				b1.summery(0);
	     			}
	     			else if(transNumber == b1.accountNumber && transOption == 4){
	    					System.out.println("UNDER CONSTRUCTION");
						transAmount = scanner.nextDouble();
	     				b1.deposit(transAmount);
	     			}
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
					if(transNumber == b2.accountNumber && transOption == 1){
	    					System.out.println("How Much Will You Withdraw");
						transAmount = scanner.nextDouble();
	    				//b2.withdraw(transAmount);
	     			}
	     			else if(transNumber == b2.accountNumber && transOption == 2){
	    					System.out.println("How Much Will You Deposit");
						transAmount = scanner.nextDouble();
	     				//b2.deposit(transAmount);
	     			}
	     			else if(transNumber == b2.accountNumber && transOption == 3){
	     				b2.summery(0);
	     			}
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
					if(transNumber == b3.accountNumber && transOption == 1){
	    					System.out.println("How Much Will You Withdraw");
						transAmount = scanner.nextDouble();
	    				//b3.withdraw(transAmount);
	     			}
	     			else if(transNumber == b3.accountNumber && transOption == 2){
	    					System.out.println("How Much Will You Deposit");
						transAmount = scanner.nextDouble();
	     				//b3.deposit(transAmount);
	     			}
	     			else if(transNumber == b3.accountNumber && transOption == 3){
	     				b3.summery(0);
	     			}
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
			     System.out.println("");
			    	System.out.println("After Transactions:");
			    	System.out.println("===================");
			    	System.out.println("-------------------------------------------------------------------------------------");
			    	System.out.println(b1);
			    	System.out.println("-------------------------------------------------------------------------------------");
			    	System.out.println(b2);
			    	System.out.println("-------------------------------------------------------------------------------------");
			    	System.out.println(b3);
			    	System.out.println("-------------------------------------------------------------------------------------");
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------					
					System.out.println("");
					System.out.print("Do You Want to Perform Another Transaction? [Y or N] ");
					String userResponse = scanner.next();
						if(userResponse.startsWith("Y") || userResponse.startsWith("y")){		//the user can end the application here
							userWantsToQuit = false;
						}
						else{
							userWantsToQuit = true;
						}
		}
					System.out.println("");
					System.out.println("GOODBYE");
    
    }
}




BankAccount


import java.util.*; 

public class BankAccount {
	
	private String owner; //name of the owner
	public int accountNumber; //account number, should be unique
	private double balance; //amount of money currently in the account
		
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------	
	public BankAccount(String anOwnerName, int anAccountNumber, double openingBalance){
		owner = anOwnerName;
		accountNumber = anAccountNumber;
		balance = openingBalance;
	}
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
				
	private void Transaction(String transactionType, double openingBalance){
		//print the transaction details
		System.out.println("Owner: " + owner + " ----- " + "Account: #" + accountNumber + " ----- " + "Transaction: " + transactionType + " ----- " + "Opening Balance: " + "$" + openingBalance + " ----- " + "Closing Balance: " + "$" + balance);
	}

//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
	public BankAccount summery(double anAmount){
		
		//adjust the balance and then return the object on behalf of which
		//this methods is being run.
		double openingBalance = balance;		
		balance = (balance);		
		Transaction("DEPOSIT ", openingBalance);
		return this; //needed for chaining
	}
		
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
	
	public BankAccount deposit(double anAmount){		
		//adjust the balance and then return the object on behalf of which
		//this methods is being run.
		double openingBalance = balance;		
		balance = (balance - 1.50) + anAmount;		
		Transaction("DEPOSIT ", openingBalance);
		return this; //needed for chaining
	}
	
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
	
	public BankAccount withdraw(double anAmount){
		
		//adjust the balance and then return the object on behalf of which
		//this methods is being run.
        double openingBalance = balance;
        
		balance = (balance - 1.50) - anAmount ;		
		Transaction("WITHDRAW", openingBalance);
  		return this; //needed for chaining
	}
		
	public String toString(){
		return "Owner: " + owner + " ----- " + "Account: #" + accountNumber + " ----- " + "Balance: " + "$" + balance + " ----- " + " Service Charge: " + "$1.150";
	}
}
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------
	


one of the requirements for this assignment is that I make a new class file which handles the transaction history. all help is appriciated


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HellblazerX

Sat Oct 20, 2007 10:54 am


RE:Bank Account Program - Transaction History

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Why not make Transaction a class of its own rather than just a method?  That way you can store all your Transactions into a Collection.


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Tony

Sat Oct 20, 2007 5:49 pm


RE:Bank Account Program - Transaction History

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so you make a Singleton class for Transactions, and as Hellblazer suggests - have all the new data be pushed onto a Collection.