Workshop on Java Multithread Enhancement Flashcards
What is the concurrency model used in Java multithreading?
Java multithreading uses a thread-based concurrency model where multiple threads execute simultaneously within a single process.
What is the primary mechanism for coordinating access to shared resources in Java multithreading?
Java provides synchronization mechanisms such as locks, semaphores, and monitors for coordinating access to shared resources among threads.
What is the concurrency model used in JavaScript?
JavaScript uses an event-driven concurrency model where code runs within a single-threaded event loop.
How are asynchronous operations handled in JavaScript?
Asynchronous operations in JavaScript are managed using event listeners, callbacks, Promises, or async/await syntax, allowing non-blocking execution.
What is the main difference between Java multithreading and JavaScript concurrency?
Java multithreading involves explicit thread management and synchronization, while JavaScript concurrency relies on event-driven asynchronous programming patterns to handle concurrency and non-blocking I/O.
Why is the Runnable interface useful for code reuse?
The Runnable interface promotes code reuse by allowing you to define tasks as separate classes implementing the Runnable interface. These tasks can then be executed concurrently by multiple threads, enabling efficient code organization and reuse.
What are some benefits of using the Runnable interface for code reuse?
Encapsulation: The Runnable interface allows you to encapsulate tasks as separate classes, promoting modular and maintainable code.
Flexibility: By decoupling tasks from the Thread class, you have the flexibility to execute tasks in different contexts, such as within a thread pool or as part of a larger application framework.
Scalability: The Runnable interface enables scalable concurrency, allowing multiple tasks to be executed concurrently by multiple threads, leveraging the full potential of multi-core processors.
Testability: Tasks defined by the Runnable interface are inherently testable, as they can be instantiated and executed independently of the threading environment, facilitating unit testing and code validation.
What is asynchronous Java multithreading?
Asynchronous Java multithreading involves executing tasks concurrently without blocking the main thread of execution, typically used for I/O-bound operations.
How are asynchronous operations typically handled in Java?
Asynchronous operations in Java are often handled using callbacks, Futures, Promises, or CompletableFuture, allowing tasks to run independently of the main thread.
How does CompletableFuture simplify asynchronous programming in Java?
CompletableFuture provides a powerful way to compose and chain asynchronous operations using methods like thenApply, thenAccept, and thenCompose.
What are some benefits of asynchronous Java multithreading?
Improved responsiveness: Asynchronous operations allow the main thread to remain unblocked, ensuring that the application remains responsive to user interactions.
Scalability: Asynchronous multithreading enables efficient utilization of resources, particularly in I/O-bound scenarios, leading to improved application scalability.
Performance: By executing tasks concurrently, asynchronous programming can improve overall application performance, especially in distributed systems or applications with high concurrency requirements.
Error handling: Asynchronous constructs provide mechanisms for handling errors and exceptions that may occur during the execution of asynchronous tasks, ensuring robustness and fault tolerance.
Can you create thread inside a thread ?
Yes, may reuslt in OutofMemoryError
