14.12. Atomic Variables

Try these first

1. 1.

   What is the purpose of atomic variables in Java?

   Hint

   Think about what happens when threads compete for a variable.

2. 2.

   Name one class that is used as an atomic variable.

   Hint

   These classes provide atomic access to their respective data types.

3. 3.

   What does AtomicInteger allow you to do?

   • Perform operations without locks
   • Create multi-threaded threads
   • Use traditional variables in threads

   Hint

   Consider the main feature of atomic types.

4. 4.

   True or False: AtomicBoolean can be used as a thread-safe flag.

   • True
   • False

   Hint

   Think about whether boolean states can be accessed safely in concurrent scenarios.

5. 5.

   Given a situation where multiple threads access a shared resource, design a solution using AtomicBoolean to manage a running state effectively.

   Hint

   Draw upon your understanding of how AtomicBoolean can be changed safely.

6. 6.

   Write code that demonstrates incrementing an AtomicLong in a multi-threaded environment while tracking how many times it has been incremented.

   Hint

   Utilize the incrementAndGet() method and control the number of threads involved.