public static void FIFO() {
    for (int timer = 0; timer >= 0; timer++) {
      for (int i = 0; i < processes.length; i++) {
        if (waitingQueue[0] == null && (i + 1) == processes.length && processes == null) {
          System.out.println("Out of processes, end of simulation.");
          return;
        }
        if ((waitingQueue[0] == null)
            && (i + 1) == processes.length
            && (runningProcess == 0)
            && i == processes.length) {

          System.out.println("No processes to run at time " + timer);
        }
        if ((timer == processes[i].getStartTime())
            && (i + 1) == processes.length
            && (runningProcess == 0)) {
          runningProcess = 1;
          currentProcess = processes[i];

          System.out.println(
              "Running process " + currentProcess.getProcessNumber() + " at time " + timer);
        }
        if (timer == processes[i].getStartTime()
            && (i + 1) == processes.length
            && runningProcess == 1) {
          sendToQueue(processes[i]);
          System.out.println(
              "Process running: process "
                  + waitingQueue[0].getProcessNumber()
                  + " is waiting at time "
                  + timer);
          addWaitingTime();
        }

        if (currentProcess != null
            && (i + 1) == processes.length
            && timer == (currentProcess.getStartTime() + currentProcess.getRunTime())) {
          System.out.println("Process " + currentProcess.getProcessNumber() + " finished");
          runningProcess = 0;
        }
      }
    }
  }
  public void sheduleFCFS() {
    Process newprocess = new Process();
    Process min = newprocess;
    int Ttime = 0;

    while (processlist.size() > 0) {
      if (min == newprocess) {
        for (int i = 0; i < processlist.size() - 1; i++) {
          if (processlist.get(i).getStartTime() <= processlist.get(i + 1).getStartTime()) {
            min = processlist.get(i);
          } else {
            min = processlist.get(i + 1);
          }
        }
      }

      if (min.getServiceTime() == 0) {
        if (min != newprocess) {
          processlist.remove(min);
          min = newprocess;
        }
      } else if (min.getServiceTime() > 0) {
        if (min.getStartTime() <= Ttime) {
          timelist.add(min.getProcessId());
          min.setServiceTime(min.getServiceTime() - 1);
        } else {
          timelist.add("Null");
        }
      }

      Ttime++;
    }
    for (int k = 0; k < timelist.size(); k++) {
      System.out.print(timelist.get(k) + " ");
    }
  }