23. Java Memory Model and Thread Safety

Try these first

1. 1.

   Define the Java Memory Model in your own words.

   Hint

   Think about thread interactions.

2. 2.

   What does the volatile keyword do?

   Hint

   Consider where shared states are modified.

3. 3.

   What is the primary purpose of the Java Memory Model?

   • Define how threads are created
   • Ensure safe thread communication
   • Manage CPU allocations

   Hint

   Think about communication requirements of multi-threaded apps.

4. 4.

   Atomicity guarantees operations happen in a single step.

   • True
   • False

   Hint

   Consider indivisible operations.

5. 5.

   You're developing a multi-threaded banking application. Explain how you would ensure accuracy when transferring money from one account to another.

   Hint

   Consider how shared data integrity is maintained.

6. 6.

   Discuss the implications of using a volatile variable for a shared counter vs. using synchronized methods.

   Hint

   Think about the necessity of atomicity vs. visibility.