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Oracle Certified Professional: Java SE Developer 1Z0-831 (Java SE 25) · Domain 8: Managing concurrent code execution

Platform threads vs virtual threads; Executors.newVirtualThreadPerTaskExecutor()

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Last reviewed September 25, 2026 · Leer en español

A platform thread is a thin wrapper around an operating system thread. It holds that OS thread for its whole life, including while it waits for a database or network reply. OS threads are relatively expensive: each reserves memory for a stack and the OS can schedule only so many efficiently, so applications traditionally used fixed-size thread pools and shared a limited number of threads among many tasks.

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