Do operations with variables declared with the volatile keyword ensure atomicity in a multithreaded environment?

The volatile keyword in Java guarantees visibility of variable changes between threads, meaning if one thread changes the value, other threads will see the updated value. However, volatile does not ensure atomicity of operations. For example, the operation count++ is not atomic, even if count is declared as volatile, because it consists of multiple steps (read, increment, write).

For atomic operations, you should use classes from the java.util.concurrent.atomic package (such as AtomicInteger) or synchronization (synchronized).

Example:

volatile int count = 0;

// count++ is not atomic

AtomicInteger atomicCount = new AtomicInteger(0);
atomicCount.incrementAndGet(); // atomic