Additional Notes
What happens if a thread holds a lock and tries to acquire it again?
Track: Java
Topic: Concurrency
Focus: Synchronized and Locks
Java: Synchronized and Locks
Answer
The thread can reacquire it without blocking.
ReentrantLock and the synchronized keyword are reentrant, meaning a thread holding the lock can acquire it again without blocking. This is useful when a method calls another synchronized method on the same object. For example, a shipping method calling an inventory check method can safely use synchronized without deadlocking itself.
ReentrantLock and the synchronized keyword are reentrant, meaning a thread holding the lock can acquire it again without blocking. This is useful when a method calls another synchronized method on the same object. For example, a shipping method calling an inventory check method can safely use synchronized without deadlocking itself.
Topics: Concurrency Java Synchronized and Locks