Code problem

Hello I have three classes customer, gui and testingGui. This is my first attempt with JTextField controls. I have converted this program from Messageboxes so the program did work. From the first screen i selected the first option create account(at the moment I have disbaled the account functionas the customer function is not working) after creating the first account I create a subsequent account after which I select option "List details of all accounts" however the program outputs the same customer name for all accounts, could you have a llok at the code below and tell me whats going wrong.

Cheers


///////////////////////////////////////////////////Class gui

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

class SetGui extends JFrame
{
      Container container = getContentPane ();
      
      int selectedOption = 0 ;
      static int noOfAccounts = 0 ;
      private JButton proceedButton, cancelButton ;
      private JLabel menuLabel ;
      private JTextField customerField,  telephoneField ;
      private JRadioButton createAcc, depositWithdraw , displayOne,  listAll, interestCalcs ;
      bank[] newBank = new bank [100] ;
      customer[] newCustomer = new customer[100] ;
      
      public SetGui()
      {
            createMenu () ;
      }
      
      public void createMenu ()
      {
            container.setLayout (null)  ;
            
            menuLabel = new JLabel ("Menu Options:") ;
            menuLabel.setBounds(30,30,300,20) ;
            container.add(menuLabel) ;
            
            createAcc = new JRadioButton ("Create an Account") ;
            createAcc.setBounds (30,50,200,60) ;
            createAcc.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        selectedOption = 1 ;
                        
                  }
            }) ;
            container.add(createAcc) ;
            
            depositWithdraw = new JRadioButton ("Deposit/Withdraw Money") ;
            depositWithdraw.setBounds (30,90,200,60) ;
            depositWithdraw.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        selectedOption = 2 ;
                        
                  }
            }) ;
            container.add(depositWithdraw) ;
            
            displayOne = new JRadioButton ("Display Account Details") ;
            displayOne.setBounds (30,130,200,60) ;
            displayOne.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        selectedOption = 3 ;
                        
                  }
            }) ;
            container.add(displayOne) ;
            
            listAll = new JRadioButton ("List details of all Accounts") ;
            listAll.setBounds (30,170,200,60) ;
            listAll.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        selectedOption = 4 ;
                        
                  }
            }) ;
            container.add(listAll) ;
            
            interestCalcs = new JRadioButton ("Interest Calculations") ;
            interestCalcs.setBounds (30,210,200,60) ;
            interestCalcs.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        selectedOption = 5 ;
                        
                  }
            }) ;
            container.add(interestCalcs) ;
            
            proceedButton = new JButton ("OK") ;
            proceedButton.setBounds(30,270,100,60) ;
            proceedButton.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                              
                        if (selectedOption != 0)
                        {
                        
                              switch (selectedOption)
                              {
                                    case 1 :
                                                noOfAccounts++ ;
                                                //newBank[noOfAccounts] = new bank () ;
                                                //newBank[noOfAccounts].setNewAccount () ;
                                                newCustomer[noOfAccounts] = new customer () ;
                                                //newCustomer[noOfAccounts].setNewAccount () ;
                                                //setVisible(false);
                                                
                                                
                                                
                                                break ;
                                    case 2 :
                                    case 3 :
                                    case 4 :
                                                if(noOfAccounts >= 1)
                                                {
                                                      if((selectedOption == 2) || (selectedOption == 4))
                                                      {
                                                            newCustomer[noOfAccounts].displayAccountDetails(newCustomer, noOfAccounts) ;
                                                            //newBank[noOfAccounts].displayAccountDetails(newBank, noOfAccounts) ;
                                                      }
                                                      if(selectedOption == 2)
                                                      {      try
                                                            {
                                                            
                                                                  int tempAccount = Integer.parseInt(JOptionPane.showInputDialog("Please enter customer account number to use")) ;
                                                                  newBank[tempAccount].setBalance() ;
                                                            }
                                                            catch(NullPointerException s)
                                                            {
                                                                  JOptionPane.showMessageDialog(null,"You have selected an invalid account number!!","error", JOptionPane.INFORMATION_MESSAGE) ;
                                                            }
                                                            break ;
                                                            
                                                      }else if (selectedOption == 3)
                                                      {
                                                            newCustomer[noOfAccounts].displayAccountDetails () ;
                                                            //newBank[noOfAccounts].displayAccountDetails () ;
                                                            break ;
                                                      }
                                                      else
                                                      {
                                                            break ;
                                                      }
                                    
                                                }
                                                else
                                                {
                                                      JOptionPane.showMessageDialog(null,"No Accounts Present!!","error", JOptionPane.INFORMATION_MESSAGE) ;
                                                      break ;
                                                }
                                    
                                    case 5 :
                                                                  
                                                newBank[noOfAccounts].calculateInterest(newBank, noOfAccounts) ;
                                                break ;
                                                
                                                
                                                
                                    default :
                                                JOptionPane.showMessageDialog(null,"Exiting program","Terminating program", JOptionPane.INFORMATION_MESSAGE) ;
                              }
                  
                        }
                        }
            }) ;
            
            container.add(proceedButton) ;
            
            ButtonGroup bg = new ButtonGroup () ;
            
            bg.add(createAcc) ;
            bg.add(depositWithdraw) ;
            bg.add(displayOne) ;
            bg.add(listAll) ;
            bg.add(interestCalcs) ;
            
            setBounds(400,400,400,400) ;
            setVisible (true) ;
            
            
            
            
      }
}




////////////////////////////////////////////////////////////////////////class testingGui






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

class testthisBank
{
      
      
      public static void main (String[] args)
      {
            
            
            
            SetGui thisGui = new SetGui () ;
            thisGui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) ;
            
            
            
            
      }
}






////////////////////////////////////////////////////////////////////////////////////////class customer







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

class customer extends JFrame
{
      
      String customerName ;      
      String customerAddress ;
      String customerTelephone ;
      boolean noInput = true ;
      
      private JButton okButton, cancelButton ;
      private JLabel customerLabel, addressLabel, telephoneLabel ;
      private JTextField customerField,  telephoneField ;
      private JTextField addressField[] = new JTextField [5] ;
      JTextArea outputArea = new JTextArea();            //Creation of object outputArea of type JTextArea
      Container container = getContentPane ();
      //TextFieldHandler textHandler = new TextFieldHandler () ;
      
      public customer ()
      {
            String customerName = "";      
            String customerAddress = "";
            String customerTelephone = "";
            gui () ;
            
      }
      
      
      public void gui ()
      {
            
            
            
            container.setLayout (null) ;
            
            setName () ;
            setAddress () ;
            setTelephone () ;
            
            okButton = new JButton ("OK") ;
            cancelButton = new JButton ("Cancel") ;
            cancelButton.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                  {
                        setVisible(false);
                        
                  }
            }) ;
            okButton.setBounds(30,250,100,60) ;
            cancelButton.setBounds(270,250,100,60) ;
            
            okButton.addActionListener(new ActionListener()
            {
                  public void actionPerformed (ActionEvent e)
                        {
                              String      checkName ;
                              String checkAddress ;
                              checkName = customerField.getText() ;
                                    //System.out.println (test);
                              if (checkName.length() <= 0)
                              {
                                    noInput = false ;
                              }
                              else
                              {
                                    noInput = true ;
                                    
                              }
                                     
                                     for  (int x = 0; x < addressField.length ; x ++)
                                     {
                                           checkAddress = addressField[x].getText() ;
                                           if(checkAddress.length() < 1)
                                           {
                                                 noInput = false ;
                                                 //JOptionPane.showMessageDialog(null,"Please ensure each field has an input","Input Error", JOptionPane.WARNING_MESSAGE) ;
                                                 break ;
                                           }
                                           else
                                           {
                                                 noInput = true ;
                                                 
                                           }
                                     }
                                    
                              
                              
                              if(noInput == false)
                              {
                                    JOptionPane.showMessageDialog(null,"Please ensure each field has an input","Input Error", JOptionPane.WARNING_MESSAGE) ;
                              }
                              else
                              {
                                    customerName = customerField.getText() ;
                                     customerAddress = addressField[0].getText() + ", " ;
                                     customerAddress += addressField[1].getText() + ", ";
                                     customerAddress += addressField[2].getText() + ", ";
                                     customerAddress += addressField[3].getText() + ", ";
                                     customerAddress += addressField[4].getText() ;
                                     customerTelephone = telephoneField.getText () ;
                                     //JOptionPane.showMessageDialog(null,customerName + customerAddress + customerTelephone,"Input Error", JOptionPane.WARNING_MESSAGE) ;
                                     //setVisible(false);
                              }
                        
                        }
                        
            }) ;
            
            
            container.add(okButton) ;
            container.add(cancelButton) ;
            
            setBounds(400,400,400,400) ;
            setVisible (true) ;
      }
      
      public void setName()
      {
            customerLabel = new JLabel ("Customer Name") ;
            customerLabel.setBounds(30,30,100,20) ;
            container.add(customerLabel) ;
            customerField = new JTextField () ;
            customerField.setBounds(30,50,200,20) ;
            container.add(customerField) ;
      
      }
      
      public String getName()
      {
            return customerName ;
      }
      
      
      public void setAddress()
      {
            addressLabel = new JLabel ("Address") ;
            addressLabel.setBounds(30,70,200,20) ;
            container.add(addressLabel) ;
            addressField[0] = new JTextField () ;
            addressField[0].setBounds(30,90,200,20) ;
            container.add(addressField[0]) ;
            addressField[1] = new JTextField () ;
            addressField[1].setBounds(30,110,200,20) ;
            container.add(addressField[1]) ;
            addressField[2] = new JTextField () ;
            addressField[2].setBounds(30,130,200,20) ;
            container.add(addressField[2]) ;
            addressField[3] = new JTextField () ;
            addressField[3].setBounds(30,150,200,20) ;
            container.add(addressField[3]) ;
            addressField[4] = new JTextField () ;
            addressField[4].setBounds(30,170,200,20) ;
            container.add(addressField[4]) ;
            //customerAddress = Address ;
      }
      
      public String getAddress()
      {
            return customerAddress ;
      }
      
      public void setTelephone()
      {
            telephoneLabel = new JLabel ("Telephone") ;
            telephoneLabel.setBounds(30,190,100,20) ;
            container.add(telephoneLabel) ;
            telephoneField = new JTextField () ;
            telephoneField.setBounds(30,210,200,20) ;
            container.add(telephoneField) ;
            //customerTelephone = Telephone ;
      }
      
      public String getTelephone()
      {
            return customerTelephone ;
      }
      
      public void  displayAccountDetails ()
      {
            
            JOptionPane.showMessageDialog(null, getName () + "\nAddress: " + getAddress () + "\nTelephone No: " +      getTelephone () ,  "Account Details", JOptionPane.INFORMATION_MESSAGE) ;
      }
      
      public void displayAccountDetails (customer newCustomer[], int noOfAccounts)
      {
            String accountInfo = "" ;
            accountInfo += "Listing of All Accounts\nAccount No:\t\tName:\t\tAddress\t\tTelephone Number\n" ;
            for(int i = 1 ; i<= noOfAccounts ; i++)
            {
                  
                  //Pass the value within the grid variable into the setText function of the outputArea object
                  accountInfo += i + "\t\t" + newCustomer[noOfAccounts].getName () + "\t\t" + newCustomer[noOfAccounts].getAddress () + "\t\t" + newCustomer[noOfAccounts].getTelephone () + "\n" ;
                  //System.out.println(newBank[i].getCustomer ()) ;
            }
            
            outputArea.setText(accountInfo);
            JOptionPane.showMessageDialog(null,outputArea,"Names", JOptionPane.INFORMATION_MESSAGE) ;
            
            
      }

}