Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Free Tools

Explore our collection of AI-powered tools designed to boost your productivity.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Free Tools Pricing Schools Business

10 Questions

1 Views

Java Monitors: Theory & Usage Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the notifyAll() method do in Java monitors?

Puts all threads waiting on the same monitor into a waiting state
Wakes up all the threads waiting on the same monitor held by the current thread (correct)
Wakes up all threads in the system, regardless of the monitor they are waiting on
Wakes up a single thread waiting on the same monitor held by the current thread

What is the purpose of the notifyAll() method in Java monitors?

To wake up all waiting threads on the same monitor (correct)
To wake up a specific waiting thread on the same monitor
To put all waiting threads into a waiting state
To wake up all threads in the system

When does a thread move from a waiting state to the RUNNABLE state after notifyAll() is called?

After notifyAll() is called, one random waiting thread moves to the RUNNABLE state
After notifyAll() is called, all waiting threads move to the RUNNABLE state (correct)
After notifyAll() is called, threads move to the WAITING state
After notifyAll() is called, threads move to a new state called AWAKENED

What happens to threads after notifyAll() is called in Java monitors?

Threads move from waiting states to compete for the monitor (C) Signup and view all the answers

In which method of Java monitors does the last thing it does just before returning call notifyAll()?

MailboxMonitor’s take method (D) Signup and view all the answers

Explain the relationship between a monitor and the notifyAll() method in Java.

The notifyAll() method in Java wakes up all the threads waiting on the same monitor held by the current thread, allowing them to move from either the WAITING or TIMED WAITING state to the RUNNABLE state. Signup and view all the answers

Discuss the categories of monitor methods in Java.

The categories of monitor methods in Java include wait(), wait(ms), wait(ms, ns), notify(), and notifyAll(). Signup and view all the answers

Describe the general form of a Java monitor method.

The general form of a Java monitor method includes the use of synchronized keyword to define a method or a block of code that can be accessed by only one thread at a time. Signup and view all the answers

What is the significance of designing a monitor method's 'guard' in Java?

Designing a monitor method's 'guard' in Java is significant for ensuring that the method is accessed only when certain conditions are met, helping to prevent spurious wake-ups and ensure correct synchronization. Signup and view all the answers

Compare Hoare's monitor with Java's monitor and highlight the differences.

Hoare's monitor and Java's monitor both provide a way to synchronize access to shared resources, but Hoare's monitor uses a different signaling mechanism compared to Java's monitor. Hoare's monitor uses a signal mechanism while Java's monitor uses notify() and notifyAll() methods for signaling. Signup and view all the answers