How do get JavaFX to read a text file? I want to be able to enter a name and pas
ID: 3859960 • Letter: H
Question
How do get JavaFX to read a text file? I want to be able to enter a name and password and JavaFX to display the account details, thanks in advance.
The files are in a .txt file and look like this:
Customer.txt (First 2 are ID & Password)
"3001":"1234":"Billy":"Carter":"Georgia":"bc@yahoo.com"
"3002":"1111":"Tony":"Danza":"Atlanta":"ggggg@hotmail.com"
"3003":"6789":"Terry":"March":"Texas":"mm@ymail.com"
"3004":"1111":"Susan":"Slater":"Arizona":"ss@yahoo.com"
"3005":"1212":"Tony":"Randal":"California":"tr1@hotmail.com"
"3006":"9999":"Bill":"Gates":"Washington":"bgates@ms.com"
Accounts.txt (Account#: Customer ID: Account Type: Balance)
"90000":"3003":"SAV":$8855.90
"90001":"3003":"CHK":$786.54
"90002":"3001":"SAV":$9654.13
"90003":"3006":"SAV":$17619.34
"90004":"3006":"CHK":$100.29
"90005":"3006":"MMA":$700356.23
"90006":"3001":"MMA":$23479.10
"90007":"3004":"MMA":$18000.00
"90008":"3005":"MMA":$25000.00
"90009":"3006":"SAV":$9000.00
"90010":"3003":"MMA":$10000.00
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
import javafx.event.Event;
import javafx.event.EventHandler;
public class AccountLogin extends Application implements EventHandler<ActionEvent>{
Button btn = new Button("Login");
Button mbtn = new Button("Exit");
TextField fntf = new TextField();
TextField lntf = new TextField();
TextField pwtf = new TextField();
public void start(Stage primaryStage) {
btn.setOnAction(this);
GridPane root = new GridPane();
root.add(new Label("First Name: "),0,0);
root.add(fntf,1,0);
root.add(new Label("Last Name: "),0,1);
root.add(lntf,1,1);
root.add(new Label("PW: "),0,2);
root.add(pwtf,1,2);
root.add(btn,0,3);
root.add(mbtn,1,3);
btn.setOnAction(this);
mbtn.setOnAction(this);
Scene scene = new Scene(root, 200, 150);
primaryStage.setTitle("ChattBank Login");
primaryStage.setScene(scene);
primaryStage.show();
}
public void handle(ActionEvent event) {
if(event.getSource() == btn) {
System.out.println("Login Btn Pressed.....");
CustomerGUI2 cg = new CustomerGUI2();
}
if(event.getSource() == mbtn) {
System.out.println("Exit Btn Pressed.....");
System.exit(0);
}
}
public static void main(String[] args) {
launch(args);
}//end main()
}//end class
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Customer2 extends Person2{
//Properties
public int password;
public int customerID;
public AccountList2 list;
//Constructors
public Customer2(){
super();
list = new AccountList2();
password = 0;
customerID = 0;
}
public Customer2(int pw, int cid ,String fn, String ln, String addr, String em){
super(fn, ln, addr, em);
password = pw;
customerID = cid;
list = new AccountList2();
}
//Behaviors
public void setPw(int pw){
password = pw;
}
public int getPw(){
return password;
}
public void setList(AccountList2 li){
list = li;
}
public AccountList2 getList(){
return list;
}
public void setCid(int cid){
customerID = cid;
}
public int getCid(){
return customerID;
}
public void addAccount(Account2 acc){
list.addAccount2(acc);
}
public void display(){
System.out.println("");
System.out.println("Password: " + getPw());
System.out.println("Customer ID: " + getCid());
super.display();
list.display();
System.out.println("");
}
public void select(String custId) throws URISyntaxException{
try{
customerID = 0;
password = 0;
setFn(null);
setLn(null);
setEm(null);
setAddr(null);
Account2 acc=new Account2();
String line;
URL path = ClassLoader.getSystemResource("Customer.txt");
System.out.println("path is "+path);
File f = new File(path.toURI());
// Scanner input = new Scanner(f);
// File f1 = new File("Customer.txt");
Scanner inFile = new Scanner(f);
while(inFile.hasNextLine()){
line = inFile.nextLine();
StringTokenizer tokenizer = new StringTokenizer(line, ":");
String token = tokenizer.nextToken();
System.out.println(token);
if(token.equals(custId)){
customerID = Integer.parseInt(token);
password = Integer.parseInt(tokenizer.nextToken());
setFn(tokenizer.nextToken());
setLn(tokenizer.nextToken());
setAddr(tokenizer.nextToken());
setEm(tokenizer.nextToken());
list = new AccountList2();
URL path1 = ClassLoader.getSystemResource("Accounts.txt");
System.out.println("path1 is "+path);
File f1 = new File(path1.toURI());
// Scanner input = new Scanner(f);
Scanner accFile = new Scanner(f1);
while(accFile.hasNextLine())
{
tokenizer = new StringTokenizer(accFile.nextLine(), ":");
String accNo = tokenizer.nextToken(); // acount number
String cid = tokenizer.nextToken();
if(cid.equals(custId))
{
acc.setAccNo(Integer.parseInt(accNo));
acc.setCid(Integer.parseInt(cid));
acc.setAccType(tokenizer.nextToken());
acc.setBal(Double.parseDouble(tokenizer.nextToken()));
//list.add(Integer.parseInt(accNo));
}
}
accFile.close();
break;
}
}
inFile.close();
}
catch(IOException ie){
System.out.println(ie);
}
}
public static void main(String[] args) throws URISyntaxException{
Customer2 c2;
c2 = new Customer2();
c2.display();
c2.select("3003");
c2.display();
}
}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
import java.io.*;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Account2{
//Properties
private int accountNo;
private int customerId;
private String accountType;
private double balance;
//Constructors
public Account2(){
accountNo = 0;
customerId = 0;
accountType = "";
balance = 0.0;
}
public Account2(int acc, int cid, String accType, double bal){
accountNo = acc;
customerId = cid;
accountType = accType;
balance = bal;
}
//Behaviors
public void setAccNo(int acc){
accountNo = acc;
}
public int getAccNo(){
return accountNo;
}
public void setCid(int cid){
customerId = cid;
}
public int getCid(){
return customerId;
}
public void setAccType(String accType){
accountType = accType;
}
public String getAccType(){
return accountType;
}
public void setBal(double bal){
balance = bal;
}
public double getBal(){
return balance;
}
public void display(){
System.out.println("===================== ");
System.out.println("Account Number: " + getAccNo());
System.out.println("Customer ID: " + getCid());
System.out.println("Account Type: " + getAccType());
System.out.println("Balance: $" + getBal());
System.out.println("");
}
public void select(String accNo) throws FileNotFoundException, URISyntaxException{
accountNo = 0;
accountType = "";
balance = 0;
customerId = 0;
try{
String line;
URL path = ClassLoader.getSystemResource("Account.txt");
System.out.println("path is "+path.toString());
File f = new File(path.toURI());
Scanner inFile = new Scanner(f);
while(inFile.hasNextLine()){
line = inFile.nextLine();
StringTokenizer tokenizer = new StringTokenizer(line, ":");
String token = tokenizer.nextToken();
System.out.println(token);
if(token.equals(accNo)){
accountNo = Integer.parseInt(token);
customerId = Integer.parseInt(tokenizer.nextToken());
accountType = tokenizer.nextToken();
balance = Double.parseDouble(tokenizer.nextToken());
break;
}
}
inFile.close();
}
catch(IOException ie){
System.out.println(ie);
}
}
public static void main(String[] args) throws FileNotFoundException, URISyntaxException{
Account2 a1 = new Account2();
a1.select("9000");
a1.display();
}
}
---------------------------------------------------------------------------------------------
public class Person2{
//Properties
private String firstName;
private String lastName;
private String address;
private String email;
//Constructors
public Person2(){
firstName = "";
lastName = "";
address = "";
email = "";
}
public Person2(String fn, String ln, String addr, String em ){
firstName = fn;
lastName = ln;
address = addr;
email = em;
}
//Behaviors
public void setFn(String fn){
firstName = fn;
}
public String getFn(){
return firstName;
}
public void setLn(String ln){
lastName = ln;
}
public String getLn(){
return lastName;
}
public void setAddr(String addr){
address = addr;
}
public String getAddr(){
return address;
}
public void setEm(String em){
email = em;
}
public String getEm(){
return email;
}
public void display(){
System.out.println("");
System.out.println("First Name: " + getFn());
System.out.println("Last Name: " + getLn());
System.out.println("Address: " + getAddr());
System.out.println("E-Mail: " + getEm());
System.out.println("");
}
public static void main(String[] args){
Person2 p2;
p2 = new Person2("Billy","Carter","Georgia","bc@yahoo.com");
p2.display();
Person2 p3;
p3 = new Person2("Tony","Danza","Atlanta","gggg@hotmail.com");
p3.display();
}
}
Explanation / Answer
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
public class YourClass {
String fileName;
public class Customer{
String uid;
String password;
String firstName;
String lastName;
String email;
}
private Customer selected;
public boolean isValid(String userId, String password) {
selected = null;
try (BufferedReader br = new BufferedReader(new FileReader(new File(fileName)))){
String line;
while ((line = br.readLine())!=null) {
String[] tokens = line.split(":");
for (int i = 0; i< tokens.length; i++)
tokens[i] = tokens[i].substring(1, tokens[i].length()-1);
if (tokens[0].equals(userId) && tokens[1].equals(password)) {
selected = new Customer();
selected.uid = tokens[0];
selected.password = tokens[1];
selected.firstName = tokens[2];
selected.lastName = tokens[3];
selected.email = tokens[4];
return true;
}
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return false;
}
}
Here is a demo of how you should proceed. You can modify it to meet your requirements. Presently it returns true and populates the customer object if match is found.
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