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Java FAQ: Top Questions

28. What is the synchronized keyword in Java?

The synchronized keyword in Java ensures thread safety by allowing only one thread to access a method or block at a time, preventing race conditions.

  • Synchronized Method: Locks the object’s monitor (instance or class).
  • Synchronized Block: Locks a specific object, offering finer control.
  • Monitor: Each object has a monitor; synchronized enforces mutual exclusion.
  • Use Case: Protects shared resources in multithreaded applications.