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Added in API level 1

Summary: Fields | Methods | Inherited Methods

FileChannel.MapMode

public static class FileChannel.MapMode
extends Object

java.lang.Object
↳	java.nio.channels.FileChannel.MapMode

A typesafe enumeration for file-mapping modes.

See also:

FileChannel.map(MapMode, long, long)

Summary

Fields
`public static final FileChannel.MapMode`	`PRIVATE` Mode for a private (copy-on-write) mapping.
`public static final FileChannel.MapMode`	`READ_ONLY` Mode for a read-only mapping.
`public static final FileChannel.MapMode`	`READ_WRITE` Mode for a read/write mapping.

Public methods
`String`	`toString()` Returns a string describing this file-mapping mode.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the 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(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.
`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()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Fields

PRIVATE

Added in API level 1

public static final FileChannel.MapMode PRIVATE

Mode for a private (copy-on-write) mapping.

READ_ONLY

Added in API level 1

public static final FileChannel.MapMode READ_ONLY

Mode for a read-only mapping.

READ_WRITE

Added in API level 1

public static final FileChannel.MapMode READ_WRITE

Mode for a read/write mapping.

Public methods

toString

Added in API level 1

public String toString ()

Returns a string describing this file-mapping mode.

Returns
`String`	A descriptive string

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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