Is a volatile int in Java thread-safe?

by

Yes, you can read from it and write to it safely – but you can’t do anything compound such as incrementing it safely, as that’s a read/modify/write cycle. There’s also the matter of how it interacts with access to other variables.

The precise nature of volatile is frankly confusing (see the memory model section of the JLS for more details) – I would personally generally use AtomicInteger instead, as a simpler way of making sure I get it right.

More Related Contents:

  1. What is the volatile keyword useful for?
  2. Difference between volatile and synchronized in Java
  3. Synchronizing on String objects in Java
  4. Volatile vs Static in Java
  5. What is the difference between atomic / volatile / synchronized?
  6. Is java.sql.Connection thread safe?
  7. When exactly do you use the volatile keyword in Java? [duplicate]
  8. Java synchronized method lock on object, or method?
  9. Is iterating ConcurrentHashMap values thread safe?
  10. Is a HashMap thread-safe for different keys?
  11. Thread safe multitons in Java
  12. Happens-before relationships with volatile fields and synchronized blocks in Java – and their impact on non-volatile variables?
  13. Volatile variable in Java
  14. Use cases for RxJava schedulers
  15. How to stop a thread created by implementing runnable interface?
  16. Throttling javafx gui updates
  17. Are non-synchronised static methods thread safe if they don’t modify static class variables?
  18. Simplest and understandable example of volatile keyword in Java
  19. Are volatile variable ‘reads’ as fast as normal reads?
  20. Odd even number printing using thread
  21. How do I prove programmatically that StringBuilder is not threadsafe?
  22. Java volatile modifier and synchronized blocks
  23. Is Random class thread safe?
  24. Why doesn’t volatile in java 5+ ensure visibility from another thread?
  25. Thread Confinement
  26. Testing initialization safety of final fields
  27. Is Cipher thread-safe?
  28. How to get the Context from anywhere? [duplicate]
  29. Is LinkedList thread-safe when I’m accessing it with offer and poll exclusively?
  30. Regarding thread safety of servlet [duplicate]

Leave a Comment