TextField input/output across classes

[Dirk Schreckmann]

I cannot understand why the following applet won't work. It's supposed to accept a transaction amount from one of two TextFields (deposit or withdraw), change the account balance respectively, and display the new account balance. But nothing happens. It does compile (seemingly) fine.
What am I doing wrong?

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

public class TestAccount extends BankAccount implements ActionListener {

TextField depositField, withdrawField, balanceField;
Label depositFieldLabel, withdrawFieldLabel, balanceFieldLabel;
float transactionAmount;

public void init() {

depositFieldLabel  = new Label("Deposit: ");
withdrawFieldLabel = new Label("Withdraw: ");
balanceFieldLabel  = new Label("Account Balance: ");

depositField  = new TextField(20);
withdrawField = new TextField(20);
balanceField  = new TextField(20);

add(depositFieldLabel);
add(depositField);
add(withdrawFieldLabel);
add(withdrawField);
add(balanceFieldLabel);
add(balanceField);

depositField.addActionListener(this);
withdrawField.addActionListener(this);

}

public void actionPerformed(ActionEvent e) {
if (e.getSource() == depositField)
deposit(Float.parseFloat(depositField.getText()));
if (e.getSource() == withdrawField)
withdraw(Float.parseFloat(withdrawField.getText()));
balanceField.setText("" + currentBalance);
repaint();//just for testing purposes
}

public void paint(Graphics g) {
g.drawString("" + getBalance(), 200, 350);//just for testing purposes
g.drawString("" + currentBalance, 200, 365);//just for testing purposes
}
}

and the BankAccount class is:

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

public class BankAccount extends Applet {

protected int accountNumber;
protected String customerName;
protected float currentBalance = 0.0f;

public BankAccount() {
}

public BankAccount(int accountNumber, String customerName) {
this.accountNumber = accountNumber;
this.customerName  = customerName;
}

public void deposit(float depositAmount) {
currentBalance = currentBalance + depositAmount;
}

public void withdraw(float withdrawAmount) {
currentBalance = currentBalance - withdrawAmount;
}

public float getBalance() {
return currentBalance;
}

public void paint(Graphics g) {

}
}

Thank you for any help.

(edited by Cindy to remove extra paste of TestAccount class)

[This message has been edited by Cindy Glass (edited December 14, 2001).]

[Dirk Schreckmann]

Note:
I obviously accidently pasted the first class twice. Sorry for any confusion.
(I fixed that - Cindy)
[This message has been edited by Cindy Glass (edited December 14, 2001).]

[Cindy Glass]

Well you are probably going to have a problem if you use an actionListener in this case. How will the listener know when the user is FINISHED entering the amount? Do you intend for the action to happen each time that a digit is entered? Each time that the TextField is clicked?
Perhaps you should consider adding a transaction button that the user can push to indicate that he is done typing and correcting his input amount.