# Package java.nio.channels.spi

Service-provider classes for the ``java.nio.channels`` package.

See: Description

- Class Summary
  Class | Description
  --- | ---
  AbstractInterruptibleChannel | Base implementation class for interruptible channels.
  AbstractSelectableChannel | Base implementation class for selectable channels.
  AbstractSelectionKey | Base implementation class for selection keys.
  AbstractSelector | Base implementation class for selectors.
  SelectorProvider | Service-provider class for selectors and selectable channels.

## Package java.nio.channels.spi Description

Service-provider classes for the ``java.nio.channels`` package.

Only developers who are defining new selector providers should need to make direct use of this package.

Unless otherwise noted, passing a `null` argument to a constructor or method in any class or interface in this package will cause a `NullPointerException` to be thrown.

Since:
  1.4

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