Hi Friend,

Try the following code:

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

class openTest extends JFrame{
private JLabel name,gender,facultyName, courseName,year, university,telephone, phone,email, first;
private JPanel panel1,panel2,p1,p2;
private JLabel lab,lab1;
private JLabel l[]=new JLabel [4];
private GridLayout gridLayout1;
private JTextField name1, gender1,facultyName1,courseName1, year1, first1, university1, telephone1, email1, phone1;
private JTextField t[]=new JTextField [4];
private JTabbedPane pane;
private Font boldFont;
private Font boldItalicFont;
private JButton submit;
private JButton but,but1;
BankAccount b;
public openTest(){
super("Savings Account Application Form");
panel1=new JPanel(new GridLayout(11,2));
panel2=new JPanel();
p1=new JPanel(new GridLayout(5,2));
p2=new JPanel();

name =new JLabel("*" +"Surname");
name.setToolTipText("Please tell us surname");
panel1.add(name);
name1 =new JTextField(15);
name1.setFont(boldItalicFont);
name1.setText("");
panel1.add(name1);

first =new JLabel("First name");
first.setToolTipText("Please tell us your first name");
panel1.add(first);
first1 =new JTextField(15);
first1.setText("");
panel1.add(first1);

courseName =new JLabel("Course Name");
courseName.setToolTipText("Please tell us your name");
panel1.add(courseName);
courseName1 =new JTextField(15);
panel1.add(courseName1);

year =new JLabel("Year of study");
year.setToolTipText("Please tell us your year");
panel1.add(year);
year1 =new JTextField(15);
panel1.add(year1);

phone =new JLabel("Mobile Number");
phone.setToolTipText("Please tell us your mobile number");
panel1.add(phone);
phone1 =new JTextField(15);
panel1.add(phone1);

facultyName =new JLabel("Faculty Name");
facultyName.setToolTipText("Please tell us your faculty name");
panel1.add(facultyName);
facultyName1 =new JTextField(15);
panel1.add(facultyName1);

university =new JLabel("University");
university.setToolTipText("Please tell us your university name");
panel1.add(university);
university1=new JTextField(15);
panel1.add(university1);

telephone =new JLabel("Physical Address");
telephone.setToolTipText("Please tell us your telephone contact");
panel1.add(telephone);
telephone1=new JTextField(15);
panel1.add(telephone1);

email =new JLabel("E-mail Address");
email.setToolTipText("Please tell us your E-mail Address");
panel1.add(email);
email1=new JTextField(15);
panel1.add(email1);

gender =new JLabel();
gender.setText("Sex");
gender.setToolTipText("Please tell us your gender");
panel1.add(gender);
gender1 =new JTextField(15);
panel1.add(gender1);

submit =new JButton("Submit");
submit.setSize(10,20);
panel1.add(submit,BorderLayout.WEST);
pane=new JTabbedPane();
pane.addTab("Open Savings Account",panel1);
lab=new JLabel(" ");
lab1=new JLabel(" ");
but=new JButton("Create Account");
but1=new JButton("Test Account");
p2.add(lab1);
p2.add(lab);

continue...

l[0]=new JLabel("Enter Your Account Number");
l[1]=new JLabel("Enter Your Initial Balance");
l[2]=new JLabel("Deposit Amount");
l[3]=new JLabel("Withdraw Amount");
for(int i=0;i<4;i++){
t[i]=new JTextField(10);
p1.add(l[i]);
p1.add(t[i]);
}
p1.add(but);
p1.add(but1);
but1.setVisible(false);
l[2].setVisible(false);
l[3].setVisible(false);
t[2].setVisible(false);
t[3].setVisible(false);
panel2.add(p1);
panel2.add(p2);
but.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
String des=JOptionPane.showInputDialog(null,"Deposit or Withdraw");
if(des.equals("Deposit")){
b=new BankAccount(Integer.parseInt(t[0].getText()),Integer.parseInt(t[1].getText()));
but1.setVisible(true);
l[2].setVisible(true);
l[3].setVisible(false);
t[2].setVisible(true);
t[3].setVisible(false);
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);
but1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
lab.setText(testAccount1(Integer.parseInt(t[2].getText())));
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
}
});
}
else if(des.equals("Withdraw")){
b=new BankAccount(Integer.parseInt(t[0].getText()),Integer.parseInt(t[1].getText()));
but1.setVisible(true);
l[2].setVisible(false);
l[3].setVisible(true);
t[2].setVisible(false);
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);
but1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
lab.setText(testAccount2(Integer.parseInt(t[3].getText())));
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
}
});
}
}
});
pane.addTab("Deposit/Withdrawl",panel2);

add(pane);
ButtonHandler handler =new ButtonHandler();
submit.addActionListener(handler);
}
String testAccount1(int d_amt){
String msg;
b.deposit(d_amt);
msg="Transaction Succesful";
return msg;
}
String testAccount2(int w_amt){
String msg;
msg="Transaction Succesful";
try{
b.withdraw(w_amt);
}catch(FundsInsufficientException fe){
fe=new FundsInsufficientException(b.amount,w_amt);
msg=String.valueOf(fe);
}
return msg;
}
private class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent event){

String output="Surname:"+(name1.getText())+
"\nFirst Name:"+(first1.getText())+
"\nCourseName:"+(courseName1.getText())+
"\nYear of study:"+(year1.getText())+
"\nMobile Number:"+(phone1.getText())+
"\nFaculty Name:"+(facultyName1.getText())+
"\nUniversity:"+(university1.getText())+
"\nPhysical Address:"+(telephone1.getText())+
"\nE-mail Address:"+(email1.getText())+
"\nSex:"+(gender1.getText());

continue..

if((name1.getText().equals(""))||(first1.getText().equals(""))||(courseName1.getText().equals(""))||(year1.getText().equals(""))||(phone1.getText().equals(""))||(facultyName1.getText().equals(""))||(university1.getText().equals(""))||(telephone1.getText().equals(""))||(email1.getText().equals(""))||(gender1.getText().equals("")))
JOptionPane.showMessageDialog(openTest.this,String.format("Complete the information Above",JOptionPane.ERROR_MESSAGE));
else{
JOptionPane.showMessageDialog(null,output,"Customer Information",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(openTest.this,
String.format("Congratulations!You have successfully opened an account with us",event.getActionCommand()));
}
name1.setText("");
courseName1.setText("");
facultyName1.setText("");
year1.setText("");
university1.setText("");
email1.setText("");
telephone1.setText("");
gender1.setText("");
first1.setText("");
phone1.setText("");
}
}
}
public class OpenSavingsAccount2{
public static void main(String[] args){
openTest savings =new openTest();
savings.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
savings.setSize(450,380);
savings.setVisible(true);
}
}
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 more than the balance ("+balance+"). No withdrawal was recorded.";
}
}

Thanks