import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class ConcurrentCounter {
private int count;
private Lock lock;
public ConcurrentCounter() {
count = 0;
lock = new ReentrantLock();
}
public void increment() {
lock.lock();
try {
count++;
} finally {
lock.unlock();
}
}
public void decrement() {
lock.lock();
try {
count--;
} finally {
lock.unlock();
}
}
public int getCount() {
return count;
}
}
