Java Programming for Complete Beginners - Java 16 - Step 07 - Thread Utility Methods and Synchronized Keyword - Sleep, Y

The video tutorial covers essential thread methods in Java, including thread.sleep and thread.yield, explaining their usage and impact on thread states. It also delves into the synchronized keyword, highlighting its role in ensuring thread safety and the potential performance overhead it introduces. The tutorial concludes with a brief mention of modern alternatives to synchronization and a teaser for the next topic, executor service.

What is the primary purpose of the Thread.sleep method in Java?

• To pause a thread for a specified time

• To increase the priority of a thread

• To start a new thread

• To terminate a thread immediately

How does the Thread.yield method affect thread execution?

• It decreases the thread's priority

• It guarantees the thread will stop running

• It requests the scheduler to pause the thread

• It increases the thread's execution time

Which method is a hint to the scheduler that a thread is willing to yield its current use?

• Thread.run

• Thread.yield

• Thread.sleep

• Thread.start

What is the role of the synchronized keyword in Java?

• To allow multiple threads to execute a method simultaneously

• To increase the speed of thread execution

• To ensure only one thread can execute a method at a time

• To decrease the memory usage of a thread

What is a potential downside of using synchronized methods?

• They can lead to increased memory usage

• They can cause a decrease in system performance

• They can make code execution faster

• They can allow multiple threads to access the same resource

What happens if a thread is already executing synchronized code?

• The code execution is paused indefinitely

• The code execution is terminated

• Other threads must wait until the first thread finishes

• Other threads can execute the same code simultaneously

In recent Java versions, what is an alternative to using synchronized methods for thread safety?

• Using static methods

• Using concurrent collections

• Using Thread.yield

• Using Thread.sleep