My basic java server accepts 3 clients instead of 2

Okay, this sounds simple, but I tried all the simple things and it still doesn't work properly.

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

public 开发者_开发百科class MyServer{
    public static void main(String[] args) throws IOException {

        int MAX_PLAYERS = 1;
        int players = 0;

        ServerSocket serverSocket = new ServerSocket(43);

        while(players < MAX_PLAYERS){
            if(players < MAX_PLAYERS)
                new MyThread().start(serverSocket.accept());

            players++;
        }



        serverSocket.close();
        System.exit(0);
    }
}

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If two players connect at close to the same time this is possible. You need to exclusively lock or syncronize the section where you are accepting new players.

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The problem with your code is due to bad formatting. If you connect to a client you should increment the player variable only when this happens.

    while(players < MAX_PLAYERS){
        if(players < MAX_PLAYERS)  >>{<<<
            new MyThread().start(serverSocket.accept());

            players++;
        >>}<<
    }

I'm surprised that you connected to a client in the first place.

Additionally, the start method for a thread does not take in parameters. The runnable interface doesn't take in a parameter either for the run method.