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 # setNumThreads

 Last update: 18.06.2026 

abstract fun [setNumThreads](set-num-threads.md)(numThreads: [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html))

Get the number of threads that should be used for running in parallel; this is only a hint.

#### Parameters

numThreadsthe number of threads#### Throws

[IllegalArgumentException](https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html)if the number of threads is invalid[IllegalStateException](https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html)if the value cannot currently be set