package pomoc;

import java.util.ArrayList;
import java.util.concurrent.ThreadLocalRandom;

public class App extends Thread{
public static ArrayList<String> lista;
String name;
int actiontype; //podajemy 1 jak watek ma dodawac, -1 jak usuwac
int random;
	public App(String s, int type){this.name=s; this.actiontype=type; random = ThreadLocalRandom.current().nextInt(4000, 8000 + 1);}

	public void run(){

		while(true){

			try {
				sleep(random);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}

			action();
			System.out.println(lista);
		}
	}

	public synchronized void action(){

		if(actiontype==1){lista.add(name);System.out.println("akcja add "+name); return;}
		if(actiontype==-1){
			if(!lista.isEmpty())
			lista.remove(0);
			System.out.println("akcja remove "+name);
			return;}
		else
			System.out.println("zly actiontype"+ name);
	}

	public static void main(String[] args) {
		App.lista=new ArrayList<String>();
		App w1=new App("Thread1",1);
		App w2=new App("Thread2",1);
		App w3=new App("Thread3",-1);

		App w4=new App("Thread4",1);
		App w5=new App("Thread5",-1);
		App w6=new App("Thread6",-1);

		w1.start();
		w2.start();
		w3.start();
		w4.start();
		w5.start();
		w6.start();
	}

}