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