"SEARCHING AND SAVING FILES"

Question

HI ALL,
I am required to search for a client, using their surname, first name or age and display a list of all their matching records in the text area if the results are found.
Then i am required to save the data and load it from a file using an application and not an applet. If this information is validated then the user should be able to select the client and account from a choice list. This means that each time a client object is created an entry is added to the list of clients showing the client ID, surname and first name. When a client number is entered in the text field (or selected from the list) all accounts that are owned by the client will be displayed in a choice list. Each choice list entry for an account must show the account number and the account type.
Basically Im unsure how to do this so I REALLY need your help.
Here is parts of my code, if you need more verification of what im doing please feel free to email me [email protected], cause I desperately need your help.
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class Assignment2 extends Applet
implements ActionListener {
private Branch Brh = new Branch ();
private Client Clt = new Client ();
private Account Acc = new Account ();
private Cheque Cheq = new Cheque ();
private EFTCard Eft = new EFTCard();
private ClntArray ctArray = new ClntArray ();
// create an array to hold upto ten branch objects
private Branch branchArray[] = new Branch[10];
// declare and initialise variable to keep count of
// howmany branches
private int branchCount = 0;
// Declare variables for each type of component required for this applet
// Buttons for client processing
Button btnNewClient, btnUpdateClient, btnDeleteClient;
Button btnSearchClient, btnNextClient, btnPreviousClient;
// Buttons for account and transaction processing
Button btnNewAccount, btnUpdateAccount, btnDeleteAccount;
Button btnSearchAccount, btnNextAccount, btnPreviousAccount;
Button btnNewTranx, btnPrintStatement;
// Buttons for misc processing
Button btnClear;
// declare variables for checkboxes and a checkbox group
Checkbox chequeAccount, EFTAccount;
CheckboxGroup accountType;
// choice list to hold branches that can be selected from
Choice availableBranches;
// labels and textfields for client processing
Label clientHeading;
Label promptSName, promptFName, promptClientPh, promptClientAge,promptClientNo;
TextField txtSurname, txtFirstname, txtClientPh, txtClientAge, txtClientNo;
// labels and textfields for account processing
Label accountHeading, accountTip;
Label promptAccNo, promptAccBalance, promptAccInterest, promptAccType;
TextField txtAccountNo, txtAccountBalance, txtInterestRate, txtTranxAmount;
Label promptTranxAmount, promptSelectBranch;
// general labels and text fields
Label header, footer;
TextArea results;
// panels for client processing
Panel pTextFields, pClientButtons, pClientStuff;
// account processing panels
Panel pAccountFields, pAccountButtons, pAccountStuff;
// miscelaneous panels used for formatting user interface
Panel pTop, pCentre, pBottom, pAllTextFields;
Panel pCheckBoxes, pBranches, pLists;
// variable used to create output string
String msg = "";
/***** init() method *************************************************
* This method will create all required objects, add them to the *
* applet, and register interest in events on some objects through *
* listener classes *
public void init() {
resize(700,590);
setLayout(new BorderLayout(5, 5));
// create buttons for client processing
btnNewClient = new Button("New Client");
btnUpdateClient = new Button("Update Client");
btnDeleteClient = new Button("Delete Client");
btnSearchClient = new Button("Search Clients");
btnNextClient = new Button("Next>>");
btnPreviousClient = new Button("<<Previous");
// create account processing buttons
btnNewAccount = new Button("New Acct");
btnUpdateAccount= new Button("Update Acct");
btnDeleteAccount = new Button("Delete Acct");
btnSearchAccount = new Button("Search Accts");
btnNextAccount = new Button("Next>>");
btnPreviousAccount = new Button("<<Previous");
btnNewTranx = new Button("Perform Transaction");
btnPrintStatement = new Button("Print Statement");
// button to clear the form values
btnClear = new Button("Clear All");
accountType = new CheckboxGroup();
chequeAccount = new Checkbox("Cheque Account", accountType, false);
EFTAccount = new Checkbox("EFT Account", accountType, true);
header = new Label("Client and Account Management Information System", Label.CENTER);
footer = new Label("");
// create six default branch objects and add them to the branch array
// and set counter to show howmany branches there are - assumes the
// the appropriate constructor has been defined in the Branch class
branchArray[0] = new Branch("Perth", "036060");
branchArray[1] = new Branch("Fremantle", "036080");
branchArray[2] = new Branch("Joondalup", "036989");
branchArray[3] = new Branch("Churchlands", "036018");
branchArray[4] = new Branch("MtLawley", "036605");
branchArray[5] = new Branch("Booragoon", "036090");
branchCount = 6;
// now add the default branch names and codes to choice list
// NOTE: you may have to change the getBranchName() and getBranchCode() methods to match
// those you have defined in your Branch class
availableBranches = new Choice();
for (int indx = 0; indx < branchCount; indx++) {
availableBranches.add(branchArray[indx].getBranchName() + " " +
branchArray[indx].getBranchCode() );
} // end of for loop to add branch names and codes
// create labels and text fields required for client processing
clientHeading = new Label("Client Processing");
promptSName = new Label("Surname: ", Label.RIGHT);
promptFName = new Label("First Name: ", Label.RIGHT);
promptClientPh = new Label("Client Number: ", Label.RIGHT);
promptClientAge = new Label("Client Age: ", Label.RIGHT);
promptClientNo = new Label ("Client Number: ", Label.RIGHT);
txtFirstname = new TextField(20);
txtSurname = new TextField(20);
txtClientPh = new TextField(18);
txtClientAge = new TextField(3);
txtClientNo = new TextField(15);
// create account processing labels and text fields
accountHeading = new Label("Bank Account Processing");
accountTip = new Label("Client must exist before account is created");
promptAccNo = new Label("Account Number: ", Label.RIGHT);
promptAccBalance = new Label("Balance: ", Label.RIGHT);
promptAccInterest = new Label("Interest Rate: ", Label.RIGHT);
promptTranxAmount = new Label("Transaction Amount $", Label.RIGHT);
promptAccType = new Label("Account Type: ");
txtAccountNo = new TextField(20);
txtAccountBalance = new TextField(20);
txtInterestRate = new TextField(10);
txtTranxAmount = new TextField(10);
results = new TextArea(8, 40);
// start adding components to applet
add(header, BorderLayout.NORTH);
pCentre = new Panel();
pCentre.setLayout(new BorderLayout(5, 5));
// set up client information panel
pTextFields = new Panel();
pTextFields.setLayout(new GridLayout(3, 4));
pTextFields.add(clientHeading);
pTextFields.add(new Canvas());
pTextFields.add(new Canvas());
// pTextFields.add(new Canvas());
pTextFields.add(new Canvas());
pTextFields.add(promptClientNo);
pTextFields.add(txtClientNo);
pTextFields.add(promptSName);
pTextFields.add(txtSurname);
pTextFields.add(promptFName);
pTextFields.add(txtFirstname);
// pTextFields.add(promptClientPh);
// pTextFields.add(txtClientPh);
pTextFields.add(promptClientAge);
pTextFields.add(txtClientAge);
pClientButtons = new Panel();
pClientButtons = new Panel();
pClientButtons.add(btnNewClient);
pClientButtons.add(btnUpdateClient);
pClientButtons.add(btnDeleteClient);
pClientButtons.add(btnSearchClient);
pClientButtons.add(btnPreviousClient);
pClientButtons.add(btnNextClient);
pClientStuff = new Panel();
pClientStuff.setLayout(new GridLayout(2, 1));
pClientStuff.add(pTextFields);
pClientStuff.add(pClientButtons);
// set up account and transaction information panel
pAccountFields = new Panel();
pAccountFields.setLayout(new GridLayout(3, 4));
pAccountFields.add(accountHeading);
pAccountFields.add(new Canvas());
pAccountFields.add(new Canvas());
pAccountFields.add(new Canvas());
pAccountFields.add(promptAccNo);
pAccountFields.add(txtAccountNo);
pAccountFields.add(promptAccBalance);
pAccountFields.add(txtAccountBalance);
pAccountFields.add(promptAccInterest);
pAccountFields.add(txtInterestRate);
pAccountFields.add(promptTranxAmount);
pAccountFields.add(txtTranxAmount);
pAccountButtons = new Panel();
pAccountButtons.add(btnNewAccount);
pAccountButtons.add(btnUpdateAccount);
pAccountButtons.add(btnDeleteAccount);
pAccountButtons.add(btnSearchAccount);
pAccountButtons.add(btnPreviousAccount);
pAccountButtons.add(btnNextAccount);
pAccountButtons.add(btnNewTranx);
pAccountStuff = new Panel();
pAccountStuff.setLayout(new GridLayout(2,1));
pAccountStuff.add(pAccountFields);
pAccountStuff.add(pAccountButtons);
pAllTextFields = new Panel();
pAllTextFields.setLayout(new GridLayout(2,1));
pAllTextFields.add(pAccountStuff);
pAllTextFields.add(pClientStuff);
// set up the panel that will hold the checkboxes and list of branches
pCheckBoxes = new Panel();
pCheckBoxes.setLayout(new GridLayout(3, 1));
pCheckBoxes.add(promptAccType);
pCheckBoxes.add(EFTAccount);
pCheckBoxes.add(chequeAccount);
pBranches = new Panel();
pBranches.setLayout(new GridLayout(3, 1));
promptSelectBranch = new Label("Select Branch: ");
pBranches.add(promptSelectBranch);
pBranches.add(availableBranches);
pLists = new Panel();
pLists.setLayout(new GridLayout(1, 3));
pLists.add(pCheckBoxes);
pLists.add(pBranches);
pLists.add(new Canvas());
// add all the above panels to the panel that will be added to the
// centre of the applet
pCentre.add(pLists, BorderLayout.NORTH);
pCentre.add(pAllTextFields, BorderLayout.CENTER);
pCentre.add(results, BorderLayout.SOUTH);
add(pCentre, BorderLayout.CENTER);
//add general processing buttons to panel, then add panel to applet
pBottom = new Panel();
pBottom.add(btnPrintStatement);
pBottom.add(btnClear);
add(pBottom, BorderLayout.SOUTH);
add(new Label(" "), BorderLayout.EAST);
add(new Label(" "), BorderLayout.WEST);
// add listeners for client buttons
btnNewClient.addActionListener(this);
btnUpdateClient.addActionListener(this);
btnDeleteClient.addActionListener(this);
btnSearchClient.addActionListener(this);
btnNextClient.addActionListener(this);
btnPreviousClient.addActionListener(this);
btnNewAccount.addActionListener(this);
btnUpdateAccount.addActionListener(this);
btnDeleteAccount.addActionListener(this);
btnSearchAccount.addActionListener(this);
btnNewTranx.addActionListener(this);
btnNextAccount.addActionListener(this);
btnPreviousAccount.addActionListener(this);
btnPrintStatement.addActionListener(this);
btnClear.addActionListener(this);
} //end of init method
/***** actionPerformed() method **************************************
* Method is called when an event occurs on any of the object that *
* have been registered as an action listener *
public void actionPerformed (ActionEvent e) {
Object obj = e.getSource();
* if new client button is clicked then *
* create new client object *
* read data from text fields and set the client object's values *
* add this client object to array of client objects *
if (obj == btnNewClient) {
//declare variables to later check the validation of the info
boolean cNo = false;
boolean cSurName = false;
boolean cFstName = false;
boolean cAge = false;
//must change the the age to interger to then chek validation
//check for surname
if (txtSurname.getText().equals ("")) {
results.append("\n Enter Surname");
else { cSurName = true;
//check for firstname
if (txtFirstname.getText().equals ("")) {
results.append("\n Enter Name");
else { cFstName = true;
//check for client number
if (txtClientNo.getText().equals ("")) {
results.append("\nPlease Enter Correct Client Number");
else { // cNo = true;
//convertedInt = Integer.parseInt(stringValue);
//mudt try n plsce this in the rite plc to be able to wrk
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLoc == -1) {
Client Clt = new Client(txtClientNo.getText(), txtFirstname.getText()
,txtSurname.getText(), txtClientAge.getText());
ctArray.AddClient(Clt);
results.setText("New client has been added to the arrary!");
ClientLoc = ctArray.findLoc(txtClientNo.getText());
results.append(ctArray.getClient(ClientLoc).getFirstName());
} // end of new client button for the if
* if new updateclient button is clicked then *
* then do the bits required to *
* read data from text fields and set the client new details object val *
if (obj == btnUpdateClient) {
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLocc == -1){
results.setText(" Could Not Find Client!");
} else {//this will shoe the client loc that the client has been updated
display(ClientLoc);
} //end of the else bit this is just help to show {} are in place
} // end of if for update client
* if new btnDeleteClient button is clicked then *
* then do the bits required to *
* delete the client form the array *
if (obj == btnDeleteClient) {
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLoc == -1) {
results.setText(" Could Not Find Client!");
} else { //start of the else if the client was found
ctArray.remove(ClientLoc);
results.setText("Client Deleted!");
} //end of te elsebit for the removing of the client
} //end of the btndeleteclient process
* if new btnSearchClient button is clicked then *
* then do the bits required to *
* SearchClient the client form the array *
if (obj == btnSearchClient) {
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLoc == -1) {
results.setText(" Could Not Find Client!");
} else {//here is the search was good then will be able
// to display the info of the client
results.append("\n Customer Number: " + Clt.getClientNo());
results.setText(" First Name: " + Clt.getFirstName());
results.append("\n Surname: " + Clt.getSurname());
results.append("\n Customer Age: " + Clt.getAge());
}//end of the else bit that allows the user to see the clients details
// in the either the textfiels or the resultds bit as it is yet to be decided
}//end of the btnsearchclient
* if new btnNextClient button is clicked then *
* then do the bits required to *
* NextClient the client form the array *
if (obj == btnNextClient) {
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLoc == -1) {
results.setText(" Could Not Find Client!"); //need to fix it so then itll show the next client
} else {//here is the search was good then will be
//able to display the info of the client
txtClientNo.setText(Clnt.getClientNo());
txtFirstname.setText(Clnt.getFirstName());
txtSurname.setText(Clnt.getSurname());
txtClientAge.setText(Clnt.getAge());
}//end of the else bit that shos that next client
} // end of the btnnextclient
* the new btn PreviousClient button is clicked then *
* then do the bits required to *
* PreviousClient the client form the array *
if (obj == btnPreviousClient) {
int ClientLoc = ctArray.findLoc(txtClientNo.getText());
if (ClientLoc == -1) {
results.setText(" Could Not Find Client!"); //need to fix it so then itll show the previous client
} else {//here is the search was good then will be
//able to display the info of the client
txtClientNo.setText(Clnt.getClientNo());
txtFirstname.setText(Clnt.getFirstName());
txtSurname.setText(Clnt.getSurname());
txtClientAge.setText(Clnt.getAge());
}//end of the else bit that shows that previous client
}//end of the btnprevious client been clikd
* if new transaction button is clicked then *
* then do the bits required to *
* read data from text fields and set the transaction object val *
if ( obj == btnNewTranx) {
if (!txtTranxAmount.getText().equals("")) {
double TrnAmt = Double.parseDouble(txtTranxAmount.getText());
if (Acc instanceof Cheque) {
Cheq.setBalance(Cheq.getBalance() + TrnAmt );
} else if (Acc instanceof Cheque) {
Eft.setBalance(Cheq.getBalance() + TrnAmt );
} //end of the if it was eftcard
} //this will close the transaction bit if the client does enter an amount
* if display button is clicked then *
* display values from text fields and text area *
if (obj == btnPrintStatement) {
results.setText(" First Name: " + Clt.getFirstName());
results.append("\n Surname: " + Clt.getSurname());
results.append("\n Customer Number: " + Clt.getClientNo());
results.append("\n Customer Age: " + Clt.getAge());
if (Acc instanceof Cheque) {
Cheq = (Cheque) Acc;
results.append("\n \n Account Type: " + Cheq.getAccType());
results.append("\n Account Number: " + Cheq.getAccNo());
results.append("\n Account Balance: " + Cheq.getBalance());
results.append("\n Account Interest Rate: " + Cheq.getIntRate());
results.append("\n Branch Name: " + Brh.getBranchName() + " " + Brh.getBranchCode());
} else {
Eft = (EFTCard) Acc;
results.append("\n \n Account Type: " + Eft.getAccType());
results.append("\n Account Number: " + Eft.getAccNo());
results.append("\n Account Balance: " + Eft.getBalance());
results.append("\n Account Interest Rate: " + Eft.getIntRate());
results.append("\n Branch Name: " + Brh.getBranchName() + " " + Brh.getBranchCode());
}//end of if for displaying the correct Acc type
} // end of if for btnPrintStatement
* if clear button is clicked then *
* clear values from text fields and text area *
* reset other form components to default values *
if (obj == btnClear) {
txtFirstname.setText("");
txtSurname.setText("");
txtClientPh.setText("");
txtClientNo.setText("");
txtClientAge.setText("");
txtAccountNo.setText("");
txtAccountBalance.setText("");
txtInterestRate.setText("");
txtTranxAmount.setText("");
results.setText("");
availableBranches.select(0);
accountType.setSelectedCheckbox(EFTAccount);
} // end of if for clear button
} //end of actionPerformed method
} //end of applet
Sorry its so LONG. Thank you for your time
Jesika

Answer 1

You should really check the freejavahelp forums, I posted something for you there.