import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.Condition;
class FellesBord{
    private Lock laas = new ReentrantLock();
    private Condition ledigPlass = laas.newCondition();
    private Condition ikkeTomtBord = laas.newCondition();
    private int antallKlare = 0;
    private int MAKS_ANTALL = 10;
    public void settTallerken() throws InterruptedException{
        laas.lock();
        while (antallKlare == MAKS_ANTALL){
            ledigPlass.await();
        }
        int tall = antallKlare + 1;
        System.out.println("Vi la til en tallerken, det er n? "+ tall);
        antallKlare = tall;
        ikkeTomtBord.signalAll();
        laas.unlock();
    }

    public void hentTallerken() throws InterruptedException{
        laas.lock();
        try{
            while (antallKlare == 0){
                ikkeTomtBord.await();
            }
            int tall = antallKlare - 1; // - >
            System.out.println("Vi hentet en tallerken, det er n? "+ tall);
            antallKlare = tall; // -1
            ledigPlass.signalAll();
        }finally{
            laas.unlock();
        }
    }
}