# Class ExtendedMapMode

java.lang.Object
jdk.nio.mapmode.ExtendedMapMode

public class ExtendedMapMode extends Object
JDK-specific map modes.

Since:
  14
See Also:
  - `FileChannel.map(FileChannel.MapMode, long, long)`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final FileChannel.MapMode`
  `READ_ONLY_SYNC`
  File mapping mode for a read-only mapping of a file backed by non-volatile RAM.
  `static final FileChannel.MapMode`
  `READ_WRITE_SYNC`
  File mapping mode for a read-write mapping of a file backed by non-volatile RAM.

- ## Method Summary

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`
  Modifier and Type
  Method
  Description
  `protected Object`
  `clone()`
  Creates and returns a copy of this object.
  `boolean`
  `equals(Object obj)`
  Indicates whether some other object is "equal to" this one.
  `protected void`
  `finalize()`
  Deprecated, for removal: This API element is subject to removal in a future version.
  Finalization is deprecated and subject to removal in a future release.
  `final Class<?>`
  `getClass()`
  Returns the runtime class of this `Object`.
  `int`
  `hashCode()`
  Returns a hash code value for this object.
  `final void`
  `notify()`
  Wakes up a single thread that is waiting on this object's monitor.
  `final void`
  `notifyAll()`
  Wakes up all threads that are waiting on this object's monitor.
  `String`
  `toString()`
  Returns a string representation of the object.
  `final void`
  `wait()`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
  `final void`
  `wait(long timeoutMillis)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
  `final void`
  `wait(long timeoutMillis, int nanos)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

- ## Field Details

  - ### READ_ONLY_SYNC

    public static final FileChannel.MapMode READ_ONLY_SYNC
    File mapping mode for a read-only mapping of a file backed by non-volatile RAM.

    The map method throws UnsupportedOperationException when this map mode is used on an implementation that does not support it.

    Implementation Note:
      On Linux, the `MAP_SYNC` and `MAP_SHARED_VALIDATE` flags are specified to `mmap` when mapping the file into memory.

  - ### READ_WRITE_SYNC

    public static final FileChannel.MapMode READ_WRITE_SYNC
    File mapping mode for a read-write mapping of a file backed by non-volatile RAM. force operations on a buffer created with this mode will be performed using cache line writeback rather than proceeding via a file device flush.

    The map method throws UnsupportedOperationException when this map mode is used on an implementation that does not support it.

    Implementation Note:
      On Linux, the `MAP_SYNC` and `MAP_SHARED_VALIDATE` flags are specified to `mmap` when mapping the file into memory.