Practice Synchronized Blocks And Methods (20.4.1) - Java Memory Model and Thread Safety

Practice: Synchronized Blocks and Methods

Lesson 20.4.1Java 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 is a synchronized method?
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Look for the keyword 'synchronized'.
Question 2.
Why do we use synchronized blocks?
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Think about performance.
3Question 3.
What is the main purpose of using synchronized blocks in Java?
- To increase performance
- To ensure thread safety
- To prevent memory leaks
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Think about what synchronization accomplishes.
4Question 4.
True or False: A synchronized method allows multiple threads to execute it simultaneously.
- True
- False
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Recall how synchronization functions.
Question 5.
Create a Java class that simulates a ticket booking system using synchronized methods. Include at least two methods that modify shared data. Consider thread interference and ensure safety.
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Think about how simultaneous bookings could collide.
Question 6.
Discuss how using a synchronized block can improve performance over a synchronized method in a Java application that processes large datasets. Provide code snippets to support your argument.
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Identify parts of your code that can be executed independently without thread interference.

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