Error with server for java gui program, unsure if this is the right direction?

Those are the directions, here is the code I have.. Compiles, doesn't run.

Also unsure of how to add the .CSV file

**GUI Code***

import javafx.scene.Scene;

import javafx.scene.control.Button;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.Socket;

import java.util.logging.Level;

import java.util.logging.Logger;

import javafx.application.Application;

import javafx.scene.control.Label;

import javafx.scene.control.TextField;

import javafx.stage.Stage;

import javafx.event.ActionEvent;

import javafx.scene.layout.GridPane;

public class GUIClient extends Application {

@Override

public void start(Stage primaryStage) throws Exception {

primaryStage.setTitle("Stock Query Program");

TextField input = new TextField();

Label output = new Label("");

Button button = new Button("Get Qty");

button.setOnAction((ActionEvent t) ->{

String stockId = input.getText();

String stockData = Client.connect(stockId);

output.setText(stockData);

});

// creat a layout to fit the elements

GridPane layout = new GridPane();

// add the elements to the layout

layout.add(input, 0, 0, 1, 1);

layout.add(button, 1, 0, 1, 1);

layout.add(output, 0, 1, 2, 1);

layout.setHgap(10);

layout.setVgap(10);

// create a scene with the layout

Scene scene = new Scene(layout, 250, 100);

primaryStage.setScene(scene);

primaryStage.show();

}

public static void main(String... args) {

launch(args);

}

}

class Client {

public static final String SERVER_NAME = "localhost";

public static final int PORT_NUMBER = 10043;

public static String connect(String stockId) {

System.out.println("Connecting to " + SERVER_NAME+ " on port " + PORT_NUMBER);

try (Socket client = new Socket(SERVER_NAME, PORT_NUMBER)) { // create a socket

System.out.println("Just connected to "+ client.getRemoteSocketAddress());

OutputStream outToServer = client.getOutputStream();

DataOutputStream out = new DataOutputStream(outToServer);

out.writeUTF(stockId); // send the file name to the server

InputStream inFromServer = client.getInputStream();

DataInputStream in =new DataInputStream(inFromServer);

String stockInfo = in.readUTF(); // read the file contents from the server

return stockInfo;

} catch (IOException ex) {

Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);

return "Error While Contacting the Server";

}

}

}

***SERVER code***

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;

import java.net.SocketTimeoutException;

import java.util.HashMap;

import java.util.Scanner;

public class Server extends Thread {

private final ServerSocket serverSocket;

private final HashMap stock;

// Constructor for the Server Class

public Server(int port) throws IOException {

serverSocket = new ServerSocket(port);

serverSocket.setSoTimeout(100000);

stock = new HashMap();

}

// Run method

@Override

public void run() {

while(true) {

System.out.println("Waiting for client on port "+serverSocket.getLocalPort() + "...");

try (Socket server = serverSocket.accept()) { // accept the connection request, when client sends a request

System.out.println("Just connected to "+server.getRemoteSocketAddress());

DataInputStream in = new DataInputStream(server.getInputStream());

String stockId = in.readUTF(); // read the information sent by the client

System.out.println("Stock Id: "+stockId);

Item item = null;

if(stock.containsKey(stockId)) { // get the Item object if the stock id exists in the map

item = stock.get(stockId);

}

DataOutputStream out = new DataOutputStream(server.getOutputStream());

System.out.println("Sending the reply to the Client...");

// send the contents of the file to the client

if(item == null) {

out.writeUTF("Item with given id does not exist");

} else {

out.writeUTF(item.toString());

}

} catch(SocketTimeoutException s) {

System.out.println("Socket timed out!");

} catch(IOException e) {}

}

}

/**

* Method to read the contents of given file

* @param file

* @throws FileNotFoundException

*/

private void readStocks(String file) throws FileNotFoundException {

Scanner in = new Scanner(new File(file));

in.useDelimiter("[, ]");

while(in.hasNext()){

Item item = new Item(in.next(), in.next(), in.nextInt());

stock.put(item.getId(), item);

}

}

public static void main(String [] args) {

int port = Client.PORT_NUMBER;

try {

Server t = new Server(port);

t.readStocks("stock.txt");

t.start();

} catch(IOException e) {}

}

}

class Item {

private final String id;

private final String name;

private final int qty;

public Item(String id, String name, int qty) {

this.id = id;

this.name = name;

this.qty = qty;

}

public String getId() {

return id;

}

public String getName() {

return name;

}

public int getQty() {

return qty;

}

@Override

public String toString() {

return "Id : " + id + ", Name : " + name + ", Quantity : " + qty;

}

}

For this project you will be creating two programs, a client and a server. These programs will communicate with each other using Sockets. The server's role is to provide information about how many of a certain item is in stock. The client's role is to provide the user a means of interacting with the server. For data, create a.CSV file using the below data: item-id, name, quantity ap, apple,11 or,orange, 27 kw, kiwi,30 bn, banana, 124 ph, peach:45 sb, strawberry,598 ch, cherry, 201 bb, blueberry, 321 9p, grape,25 wm, watermellon, 2