NetworkChatServer 1.0+

Serv_Server1.java

package Serv;



import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

public class Server1 {
    static volatile Map<String, Integer> clients = new HashMap<>();
    static volatile ArrayList<T> online = new ArrayList<>();
    static volatile ServerSocket serverSocket;
    public static void main(String[] args) throws IOException {
        char[] c = {'4','6','5','4'};
        char[] c3 = {'5','2','2','5'};
        System.out.println(Arrays.hashCode(c));
        char[] c1 = {'1','2','3','4'};
        char[] c2 = {'1','1','3','4'};
        clients.put("Dimon", Arrays.hashCode(c));
        clients.put("Pukich", Arrays.hashCode(c3));
        clients.put("Kakich", Arrays.hashCode(c1));
        clients.put("HehMdaHmm", Arrays.hashCode(c2));
        kek();
    }
    static void newConnect(String nick){

        sendMessage("! > "+nick , "/вошёл в чат!/");
        sendMessage3("!theOnline");
    }

    static void offConnect(T t, String nick){
        System.out.println("htoto otletel (2)");
        for (int i = 0; i < online.size(); i++) {
            if (online.get(i).nick.equals(nick)) {

                online.remove(i);
                t.hmm = false;
                t.socket = null;
                t.interrupt();
                sendMessage3("!theOnline");
                sendMessage("! > "+nick, "/отлетел!/");
            }

        }
    }
    static  void sendMessage3(String m){
        if (m.equals("!theOnline")){
            StringBuilder x= new StringBuilder();
            x.append("ONLINE:\n");
            for (T t : online) {
                x.append(t.nick);
                x.append("\n");
            }
            for (T t : online) {
                t.sMessage("3"+x.toString());
            }
        }

    }

    static void sendMessage(String nick, String m){
        System.out.println(m);
        if (online.size()!=0)
        for (int i = 0; i < online.size(); i++) {
            if (!online.get(i).isInterrupted())
            if (!online.get(i).nick.equals(nick))
            online.get(i).sMessage("1"+nick+" > "+m);
        }
    }

    static void cmd(String com){

    }

    static void kek() throws IOException {
            serverSocket = new ServerSocket(7788);
            while (true) {
                try {
                    System.out.println("&");
                    T t = new T(serverSocket.accept());
                    t.start();
                    System.out.println("+1");
                } catch (IOException e) {
                    e.printStackTrace();
                    System.out.println("/kek/ error");
                    break;
                }
            }
    }


}
class T extends Thread{
    Boolean hmm = false;
    Socket socket;
    String nick;
    DataInputStream dataInputStream;
    DataOutputStream dataOutputStream;
    T(Socket socket){
        this.socket=socket;
    }
    @Override
    public void run() {
        try {
            dataInputStream = new DataInputStream(socket.getInputStream());
            dataOutputStream = new DataOutputStream(socket.getOutputStream());
            String welcome = dataInputStream.readUTF();
            String w1[] = welcome.split(":");
            String[] x = w1[1].split("");

            if (Server1.clients.get(w1[0])==Integer.parseInt(w1[1])){
                System.out.println(w1[0]+"n"+w1[1]);
                dataOutputStream.writeBoolean(true);
                for (int i = 0; i < Server1.online.size(); i++) {
                    if (Server1.online.get(i).nick.equals(w1[1])){
                        dataOutputStream.writeBoolean(false);
                        throw new IOException();
                    }
                }
                nick = w1[0];

                dataOutputStream.writeUTF("N"+nick);
                Server1.online.add(this);
                inMessageDaemon();

                hmm=true;
                Server1.newConnect(nick);

            } else {
                System.out.println("wrongPass! de pas is - " + Server1.clients.get(w1[0]) + " but " + w1[1]);
                dataOutputStream.writeBoolean(false);
            }

        } catch (IOException e) {
            System.out.println("htoto otletel");
            e.printStackTrace();
            if (hmm)
            Server1.offConnect(this, nick);
        }
    }
    public void sMessage(String m){
        try {
            dataOutputStream.writeUTF(m);
            System.out.println(m);
        } catch (IOException e) {
            if(hmm) {
                System.out.println("htoto otletel");
                e.printStackTrace();
                Server1.offConnect(this, nick);
            }
        }
    }
    public void inMessageDaemon(){
        new Thread(()->{
            while (true){
                try {
                    String m = dataInputStream.readUTF();
                    Server1.sendMessage(nick, m);
                } catch (IOException e) {
                    System.out.println("htoto otletel");
                    e.printStackTrace();
                    Server1.offConnect(this, nick);
                    break;
                }
            }
        }).start();
    }

    }