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 # disableIOConsole

 Last update: 18.06.2026 

public [disableIOConsole](disable-i-o-console.md)(discardOutput: [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html))

Prevents a [PHXIOConsole](./../-p-h-x-i-o-console/index.md) from ever being created and optionally redirects [err](https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#err--) and [out](https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#out--) to the bit bucket. This is a convenience method for headless apps (and specifically JNI apps) which are not using the console.

After calling this method, feel free to re-redirect the console or error stream elsewhere, secure in the knowledge that ModelCenter.jar will not attempt to steal them again and pipe them to [PHXIOConsole](./../-p-h-x-i-o-console/index.md).

#### Parameters

discardOutputwhether to redirect [out](https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#out--) and [err](https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#err--) to the bit bucket; if false, they are untouched#### Throws

[IllegalStateException](https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html)if [getDummyFrame](get-dummy-frame.md) has already been called and the IO console created