AtomicLong atomicLong = new AtomicLong(0); atomicLong.incrementAndGet();
AtomicLong atomicLong = new AtomicLong(10); atomicLong.compareAndSet(10, 20);In this example, we create a new AtomicLong instance with an initial value of 10. We then use the `compareAndSet()` method to compare the AtomicLong's current value with 10. If the values are equal, the method sets the value to 20. If the values are not equal, the method does nothing. Package Library: The java.util.concurrent.atomic package is a part of the Java Concurrency library, which is included in the Java standard library. This package provides classes for creating thread-safe, atomic variables that can be accessed by multiple threads concurrently.