Quiz 4
Explore the synchronized keyword in Java and understand how synchronized methods and blocks control thread access by locking objects to ensure atomicity. Learn about reentrant locks, the object scope of synchronization for instance methods, and how static synchronized methods lock on the class object. This lesson helps you grasp essential concurrency controls needed for multithreaded Java programming and interviews.
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Question # 1
What is the synchronized keyword?
Java provides a built-in mechanism to provide atomicity called the synchronized block. A synchronized method is a shorthand for a synchronized block that spans an entire method body and whose lock is the object on which the method is being invoked.
A synchronized block consists of a reference to an object that serves as the lock and a block of code that will be guarded by the lock.
Synchronized blocks guarded by the same lock will execute one ...