Question

Error: Main method not found in class ServiceProvider, please define the main method as:
public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application

This is the error im getting while executing the following code

Can you modify the error

import java.net.*;
import java.io.*;

public class ServiceProvider extends Thread
{
//initialize socket and input stream
private Socket socket = null;
private ServerSocket server = null;
private DataInputStream in = null;
private DataOutputStream out = null;
private int Port;
  
// constructor with port
public ServiceProvider(int port)
{
// starts server and waits for a connection
Port = port;
}

public void run()
{
try {
server = new ServerSocket(Port);
socket = server.accept();
System.out.println("Port " + Port + "New Service Request");
  
// takes input from the client socket
in = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
out = new DataOutputStream(socket.getOutputStream());

String line = "";
  
// reads message from client.
while (!line.equals("Close")) {
try {
line = in.readUTF();
String tmp = "can you provide this service?";
if(line.equals(tmp)) {
line = "Yes";
out.writeUTF(line);
}
}

catch(IOException i) {
System.out.println(i);
}
}

// close connection
socket.close();
in.close();
}

catch (Exception e) {
// Throwing an exception
System.out.println ("Exception is caught");
}

}
}

Answer 1

import java.net.*;
import java.io.*;

public class ServiceProvider extends Thread {
    //initialize socket and input stream
    private Socket socket = null;
    private ServerSocket server = null;
    private DataInputStream in = null;
    private DataOutputStream out = null;
    private int Port;

    // constructor with port
    public ServiceProvider(int port) {
// starts server and waits for a connection
        Port = port;
    }

    public void run() {
        try {
            System.out.println("Listening on port " + Port);
            server = new ServerSocket(Port);
            socket = server.accept();
            System.out.println("Port " + Port + "New Service Request");

// takes input from the client socket
            in = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
            out = new DataOutputStream(socket.getOutputStream());

            String line = "";

// reads message from client.
            while (!line.equals("Close")) {
                try {
                    line = in.readUTF();
                    String tmp = "can you provide this service?";
                    if (line.equals(tmp)) {
                        line = "Yes";
                        out.writeUTF(line);
                    }
                } catch (IOException i) {
                    System.out.println(i);
                }
            }

// close connection
            socket.close();
            in.close();
        } catch (Exception e) {
// Throwing an exception
            System.out.println("Exception is caught");
        }
    }

    public static void main(String[] args) throws InterruptedException {
        ServiceProvider provider = new ServiceProvider(32412);
        provider.start();
        provider.join();
    }
}