Practice The Java Memory Model (jmm) (20.1) - Java Memory Model and Thread Safety

Practice: The Java Memory Model (JMM)

Lesson 20.1Java Memory Model and Thread Safety

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the Java Memory Model specify?
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Think of thread interactions and shared variables.
Question 2.
Define visibility in the context of the JMM.
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Focus on the importance of thread changes.
3Question 3.
What does the Java Memory Model define?
- Access to local variables
- How threads interact through shared variables
- Thread scheduling
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Think about the purpose of the JMM.
4Question 4.
True or False: Changes made by one thread are always visible to other threads immediately.
- True
- False
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Consider how memory visibility is structured in concurrent programming.
Question 5.
Write a small Java program that demonstrates a race condition when two threads attempt to increment a shared counter. Explain how you would fix it.
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Look for critical sections where shared state is modified.
Question 6.
Describe a situation where using a volatile variable is necessary. Provide an example.
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Think of flags used for signaling between threads.

5 more questions in this section. Enroll free to practise them all.