Answer
Thread pools reuse worker threads.
Reduce overhead of thread creation.
Executors provide fixed, cached, and scheduled pools.
Reduce overhead of thread creation.
Executors provide fixed, cached, and scheduled pools.
Quick Answer
Thread pool reuses a fixed number of threads to execute many tasks. Creating a new thread for every task is expensive. ExecutorService manages a pool: submit tasks, threads are reused. Common pools: Executors.newFixedThreadPool(n), newCachedThreadPool(), newSingleThreadExecutor(). Use ThreadPoolExecutor for fine-grained control. Always shut down the executor when done.
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SugharaIQ Editorial Team
Verified Answer
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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Source: SugharaIQ