import java.util.concurrent.locks.*;

public class MyTask implements Runnable {
    private int sharedCounter = 0;
    private final int MAX_COUNT = 10000;
    private Lock laas = new ReentrantLock();
    static int traadTeller = 1;
    private int id = 0;

    public void createId() {
        laas.lock();
        try {
            id = traadTeller++;
        } finally {
            laas.unlock();
        }
    }

    @Override
    public void run() {
        laas.lock();
        try {
            createId();
            for (int i = 0; i < MAX_COUNT; i++) {
                sharedCounter += 1;
            }
            System.out.println("Traad nr " + id + ". Done! The shared counter is now: " + sharedCounter);
        } finally {
            laas.unlock();
        }
    }
}