Quick Answer
ExecutorService manages a thread pool and submits tasks. Benefits over manual thread creation: thread reuse (no creation overhead), task queuing, controlled parallelism (fixed pool prevents resource exhaustion), and built-in lifecycle management. Key methods: submit() (returns Future), execute() (fire-and-forget), shutdown() (wait for tasks to complete), shutdownNow() (interrupt running tasks).
Answer
ExecutorService manages threads and executes tasks asynchronously.
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SugharaIQ Editorial Team
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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