import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class Counter {
private int count;
private Lock lock;
public Counter() {
count = 0;
lock = new ReentrantLock();
}
public void increment() {
lock.lock();
try {
count++;
} finally {
lock.unlock();
}
}
public int getCount() {
return count;
}
}
public class Main {
public static void main(String[] args) throws InterruptedException {
Counter counter = new Counter();
Thread t1 = new Thread(() -> {
for (int i = 0; i < 100000; i++) {
counter.increment();
}
});
Thread t2 = new Thread(() -> {
for (int i = 0; i < 100000; i++) {
counter.increment();
}
});
t1.start();
t2.start();
t1.join();
t2.join();
}
}
