code help

import processing.net.*;

Server server;

String incomingMessage;
String bruger1;
String bruger2;




void setup() {
  size(400, 200);
  server = new Server(this, 5204);
}


void draw() {

  Client client = server.available();

  if (client != null) {
    incomingMessage = client.readString();
  }
}


void serverEvent(Server server, Client client) {
  if (bruger1==null) { //if no ip is occupying bruger2, save new connection here
    bruger1=client.ip();
  } else if (bruger2==null) { //if no ip is occupying bruger2, save new connection here
    bruger2=client.ip();
  } else {
    server.disconnect(client); // if there are already two clients, disconnect any new connections until there is space
  }
}

void disconnectEvent(Client disconnect) {
  println((disconnect.ip()).length(), " ", bruger1.length());
  if (disconnect.ip().equals(bruger1)) {
    bruger1 = null;
  } else if (disconnect.ip().equals(bruger2)) {
    bruger2 = null;
  }
}







------------------------CLIENT CODE -------------------------
import processing.net.*;
Client c;


PImage texts;
PImage Login;
PImage LoginBruger1;
int port1 = 5204;
PImage LoginBruger2;
PFont b;
int navn=0;
int t = 17;
Boolean login = false;
Boolean select = false;
char letter;
boolean connected = false;
String tekstfelt = "";


void setup() {
  size(400, 800);
  b = loadFont("Calibri-48.vlw");
  texts = loadImage("Layout.png");
  Login = loadImage("Login.png");
  LoginBruger1 = loadImage("LoginBruger1.png");
  LoginBruger2 = loadImage("LoginBruger2.png");
  c = new Client(this, "localhost", port1);

}

void keyPressed() {

  if ((key >= '!' && key <= 'z'|| key == ' '||key >= 128 && key <= 255)&&login&&textWidth(tekstfelt)<240  ) {
    tekstfelt = tekstfelt + key;
  } else if (key==BACKSPACE&&login) {  //delete key
    try {
      tekstfelt = tekstfelt.substring(0, tekstfelt.length()-1);
    }
    catch(StringIndexOutOfBoundsException e) {
      tekstfelt = "";
    }
  } else if (key==ENTER){   // hitting enter sends the message you've written, then clears the textbox
    c.write(tekstfelt+navn);
    tekstfelt="";
  }
}