How does `CopyOnWriteArrayList` ensure thread safety?
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java what is synchronized Informational
- Can you provide an example of using a synchronized block in Java?
- What are condition objects (e.g., `Condition`) and how do they enhance the capabilities of locks compared to `wait()`/`notify()`? What are barriers (e.g., `CyclicBarrier`, `CountDownLatch`) and how can they be used to coordinate threads?
- How are condition objects associated with locks?
- When should you use synchronized methods versus synchronized blocks in Java? Can you provide an example of using a synchronized method in Java?
- What is thread contention in the context of Java synchronization? What is a deadlock in Java and how can it occur due to synchronization?
- How does the `synchronized` keyword work at the block level? What is the monitor associated with a synchronized method or block in Java?
- How does the JMM guarantee visibility, ordering, and atomicity of operations in multithreaded Java programs? What are the different types of memory operations and how do they interact with the JMM?
- Why is thread safety a concern in multithreaded programming?
- What is the happens-before relationship in Java memory model and how does synchronization relate to it? Does the `volatile` keyword provide the same level of thread safety as `synchronized`?
- Compare and contrast `wait()/notify()` and `await()/signal()` mechanisms.
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