23.5. Volatile Keyword

Try these first

1. 1.

   What does the 'volatile' keyword assure in Java?

   Hint

   Consider what visibility means in terms of multiple threads accessing a variable.

2. 2.

   True or False: The 'volatile' keyword guarantees atomicity.

   Hint

   Remember the meaning of atomicity when you think about multiple operations.

3. 3.

   What is the purpose of the volatile keyword in Java?

   • To ensure atomic operations
   • To guarantee visibility of variables
   • To optimize performance

   Hint

   Consider how it influences visibility in multithreaded scenarios.

4. 4.

   True or False: A volatile variable can be safely incremented by multiple threads.

   • True
   • False

   Hint

   Think about what makes an operation atomic.

5. 5.

   Write a Java program where you use both error-prone increments without volatile and solve it using the volatile keyword. Explain the differences you observe.

   Hint

   Focus on how value changes when multiple threads increment.

6. 6.

   Reflect on a scenario involving multiple threads accessing a shared variable without volatile. Describe potential errors and how to resolve them with appropriate keywords.

   Hint

   Consider the race condition and its implications on smooth execution.