I want to be able to log in,log out and create and account using Gui here is my

Question

I want to be able to log in,log out and create and account using Gui here is my code so far.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.lang.Integer;

class GuiAccTest extends Frame implements ActionListener
{
Label lab=new Label(" ");
Label lab1=new Label(" ");
TextField t[]=new TextField [4];
Label l[]=new Label [4];
Button but=new Button("Create Account");
Button but1=new Button("Test Account");
BankAccount b;
GuiAccTest()
{
addWindowListener(new NewWindowAdapter());
setLayout(new GridLayout(2,0));
Panel p=new Panel();
Panel p1=new Panel();
but.addActionListener(this);
but1.addActionListener(this);
p.setLayout(new GridLayout(5,2));
p1.add(lab1);
p1.add(lab);
l[0]=new Label("Account Number");
l[1]=new Label("Initial Balance");
l[2]=new Label("Deposit Amount");
l[3]=new Label("Withdraw Amount");
for(int i=0;i<4;i++)
{
t[i]=new TextField(10);
p.add(l[i]);
p.add(t[i]);
}
p.add(but);
p.add(but1);
but1.setVisible(false);
l[2].setVisible(false);
l[3].setVisible(false);
t[2].setVisible(false);
t[3].setVisible(false);
add(p);
add(p1);
}
String testAccount(int d_amt,int w_amt)
{
String msg;
b.deposit(d_amt);
msg="Transaction Succesful";
try
{
b.withdraw(w_amt);
}catch(FundsInsufficientException fe)
{
fe=new FundsInsufficientException(b.amount,w_amt);
msg=String.valueOf(fe);
}
return msg;
}
public void actionPerformed(ActionEvent ae)
{
String str=ae.getActionCommand();
if(str.equals("Create Account"))
{
b=new BankAccount(Integer.parseInt(t[0].getText()),Integer.parseInt(t[1].getText()));
but1.setVisible(true);
l[2].setVisible(true);
l[3].setVisible(true);
t[2].setVisible(true);
t[3].setVisible(true);
but.setVisible(false);
l[0].setVisible(false);
l[1].setVisible(false);
t[0].setVisible(false);
t[1].setVisible(false);
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
return;
}
else
{
lab.setText(testAccount(Integer.parseInt(t[2].getText()),Integer.parseInt(t[3].getText())));
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
}
}
public static void main(String arg[])
{
GuiAccTest at=new GuiAccTest();
at.setTitle("Bank Account Tester");
at.setSize(600,200);
at.setVisible(true);
}
}
class NewWindowAdapter extends WindowAdapter
{
public void windowClosing(WindowEvent we)
{
System.exit(0);
}
}
class BankAccount
{
int accnum;
int amount;
BankAccount(int num,int amt)
{
accnum=num;
amount=amt;
}
public void deposit(int amt)
{
amount=amount+amt;
}
public void withdraw(int amt) throws FundsInsufficientException
{
if(amt>amount)
throw new FundsInsufficientException(amount,amt);
else
amount=amount-amt;
}
}
class FundsInsufficientException extends Exception
{
int balance;
int withdraw_amount;
FundsInsufficientException(int bal,int w_amt)
{
balance=bal;
withdraw_amount=w_amt;
}
public String toString()
{
return "Your withdraw amount ("+withdraw_amount+") is less than the balance ("+balance+"). No withdrawal was recorded.";
}
}

Explanation / Answer

Find the answer below..

package com.chegg.serial;

import java.awt.Button;

import java.awt.Frame;

import java.awt.GridLayout;

import java.awt.Label;

import java.awt.Panel;

import java.awt.TextField;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

class GuiAccTest extends Frame implements ActionListener

{

Label lab = new Label(" ");

Label lab1 = new Label(" ");

TextField t[] = new TextField[4];

Label l[] = new Label[4];

Button but = new Button("Create Account");

Button but1 = new Button("Test Account");

Button but2 = new Button("Log out");

BankAccount b;

GuiAccTest() {

addWindowListener(new NewWindowAdapter());

setLayout(new GridLayout(2, 0));

Panel p = new Panel();

Panel p1 = new Panel();

but.addActionListener(this);

but1.addActionListener(this);

but2.addActionListener(this);

p.setLayout(new GridLayout(6, 3));

p1.add(lab1);

p1.add(lab);

l[0] = new Label("Account Number");

l[1] = new Label("Initial Balance");

l[2] = new Label("Deposit Amount");

l[3] = new Label("Withdraw Amount");

for (int i = 0; i < 4; i++) {

t[i] = new TextField(10);

p.add(l[i]);

p.add(t[i]);

}

p.add(but);

p.add(but1);

p.add(but2);

but1.setVisible(false);

but2.setVisible(false);

l[2].setVisible(false);

l[3].setVisible(false);

t[2].setVisible(false);

t[3].setVisible(false);

add(p);

add(p1);

}

String testAccount(int d_amt, int w_amt) {

String msg;

b.deposit(d_amt);

msg = "Transaction Successful";

try {

b.withdraw(w_amt);

} catch (FundsInsufficientException fe) {

fe = new FundsInsufficientException(b.amount, w_amt);

msg = String.valueOf(fe);

}

return msg;

}

public void actionPerformed(ActionEvent ae) {

String str = ae.getActionCommand();

if (str.equals("Create Account")) {

b = new BankAccount(Integer.parseInt(t[0].getText()), Integer.parseInt(t[1].getText()));

but1.setVisible(true);

but2.setVisible(true);

l[2].setVisible(true);

l[3].setVisible(true);

t[2].setVisible(true);

t[3].setVisible(true);

but.setVisible(false);

l[0].setVisible(false);

l[1].setVisible(false);

t[0].setVisible(false);

t[1].setVisible(false);

lab1.setText("Account : " + b.accnum + ", Current Balance : " + b.amount);

return;

}else if(str.equals("Log out")) {

System.exit(0);

} else {

lab.setText(testAccount(Integer.parseInt(t[2].getText()), Integer.parseInt(t[3].getText())));

lab1.setText("Account : " + b.accnum + ", Current Balance : " + b.amount);

}

}

public static void main(String arg[]) {

GuiAccTest at = new GuiAccTest();

at.setTitle("Bank Account Tester");

at.setSize(800, 300);

at.setVisible(true);

}

}

class NewWindowAdapter extends WindowAdapter

{

public void windowClosing(WindowEvent we) {

System.exit(0);

}

}

class BankAccount

{

int accnum;

int amount;

BankAccount(int num, int amt) {

accnum = num;

amount = amt;

}

public void deposit(int amt) {

amount = amount + amt;

}

public void withdraw(int amt) throws FundsInsufficientException {

if (amt > amount)

throw new FundsInsufficientException(amount, amt);

else

amount = amount - amt;

}

}

class FundsInsufficientException extends Exception

{

int balance;

int withdraw_amount;

FundsInsufficientException(int bal, int w_amt) {

balance = bal;

withdraw_amount = w_amt;

}

public String toString() {

return "Your withdraw amount (" + withdraw_amount + ") is less than the balance (" + balance

+ "). No withdrawal was recorded.";

}

}

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