// Program Objarr
// J Harvey, 2002
// This is a rough outline solution to the Bank Account problem using arrays of objects
// It needs refinement as suggested by the comments in the code
// Add your own refinements, eg add a button to restart the display of stored objects
// Or add code to search for a particular account number

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class Objarr extends Applet implements ActionListener
{
	Button createBut, dispNextBut;
	TextField T1, T2, T3, T4;
	Label L1, L2, L3;
	int storeCounter=0, displayCounter=0; // indexes to point to start of array initially
	BankAccount A1;
	BankAccount[] store = new BankAccount[25];
										// Array to store BankAccount objects
	
	public void init() 
	{
		createBut = new Button("Create");
		createBut.addActionListener(this);
		add(createBut);
		dispNextBut = new Button ("Display Next account");
		dispNextBut.addActionListener(this);
		add(dispNextBut);
			
		T1=new TextField(12);
		T2=new TextField(12);
		T3=new TextField(12);
		T4=new TextField(12);
		L1=new Label("Name");
		L2=new Label("Account No");
		L3=new Label("Balance");
	
		add(L1);
		add(T1);
		add(L2);
		add(T2);
		add(L3);
		add(T3);
		add(T4);	// LAYOUT MANAGER NEEDED!!
	
	}

	public void paint(Graphics g) 
	{
		
	}
	
	public void actionPerformed(ActionEvent ae)
	{
		if (ae.getSource() == createBut)
		{
			// THIS LINE NEEDS CHANGING IF CONSTRUCTOR CHANGES
			A1 = new BankAccount(T1.getText(), Integer.parseInt(T2.getText()));
			T1.setText("");
			T2.setText("");
			T3.setText("");
			T4.setText("Account created");
			for(int i=0; i<100000000; i++);    // delay loop
			T4.setText("");
			
			store[storeCounter] = A1;
			storeCounter++; // updates the index for storing next object
		}		
		
		if (ae.getSource() == dispNextBut)
		{
			T1.setText(store[displayCounter].getName());	
			// ADD CODE TO DISPLAY ACCOUNT NUMBER AND BALANCE
			T4.setText("");
			displayCounter++; // updates the index for displaying next object
			// ADD CODE TO CHECK FOR END OF ARRAY
			// OTHERWISE PROGRAM WILL EVENTUALLY FAIL
		} 
		
				
	} // end actionPerformed
	
	

public class BankAccount
{
	int accountNumber;
	String name;
	double balance;
	// ADD OTHER VARIABLES PLUS THEIR SET/GET METHODS
	
	// ADD CODE TO CONSTRUCTOR TO ALLOW BALANCE TO BE INPUT
	public BankAccount(String nameIn, int acNumIn)
	{
		balance = 0.0;
		name = nameIn;
		accountNumber = acNumIn;		
	}
	
	public String getName()
	{
		return name;	
	}
	
	public double getBalance()
	{
		return balance;	
	}
	
	public int getAccNo()
	{
		return accountNumber;	
	}
} // end class bankAccount

} // end class Objarr