java.nio
Class ReadWriteDoubleArrayBuffer

java.lang.Object
  java.nio.Buffer
      java.nio.DoubleBuffer
          java.nio.DoubleArrayBuffer
              java.nio.ReadWriteDoubleArrayBuffer

All Implemented Interfaces:

Comparable<DoubleBuffer>

final class ReadWriteDoubleArrayBuffer
extends DoubleArrayBuffer

DoubleArrayBuffer, ReadWriteDoubleArrayBuffer and ReadOnlyDoubleArrayBuffer compose the implementation of array based double buffers.

ReadWriteDoubleArrayBuffer extends DoubleArrayBuffer with all the write methods.

This class is marked final for runtime performance.

Field Summary

Fields inherited from class java.nio.DoubleArrayBuffer

backingArray, offset

Fields inherited from class java.nio.Buffer

_elementSizeShift, capacity, limit, mark, position, UNSET_MARK

Constructor Summary

ReadWriteDoubleArrayBuffer(double[] array)

ReadWriteDoubleArrayBuffer(int capacity)

ReadWriteDoubleArrayBuffer(int capacity, double[] backingArray, int arrayOffset)

Method Summary

DoubleBuffer	asReadOnlyBuffer() Returns a readonly buffer that shares content with this buffer.
DoubleBuffer	compact() Compacts this double buffer.
(package private) static ReadWriteDoubleArrayBuffer	copy(DoubleArrayBuffer other, int markOfOther)
DoubleBuffer	duplicate() Returns a duplicated buffer that shares content with this buffer.
boolean	isReadOnly() Returns whether this buffer is readonly or not.
protected double[]	protectedArray() Child class implements this method to realize array().
protected int	protectedArrayOffset() Child class implements this method to realize arrayOffset().
protected boolean	protectedHasArray() Child class implements this method to realize hasArray().
DoubleBuffer	put(double c) Writes the given double to the current position and increase the position by 1.
DoubleBuffer	put(double[] src, int off, int len) Writes doubles in the given double array, starting from the specified offset, to the current position and increase the position by the number of doubles written.
DoubleBuffer	put(int index, double c) Write a double to the specified index of this buffer and the position is not changed.
DoubleBuffer	slice() Returns a sliced buffer that shares content with this buffer.

Methods inherited from class java.nio.DoubleArrayBuffer

get, get, get, isDirect, order

Methods inherited from class java.nio.DoubleBuffer

_array, _arrayOffset, allocate, array, arrayOffset, compareTo, equals, get, hasArray, hashCode, put, put, toString, wrap, wrap

Methods inherited from class java.nio.Buffer

capacity, clear, flip, hasRemaining, limit, limit, mark, position, position, remaining, reset, rewind

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ReadWriteDoubleArrayBuffer

ReadWriteDoubleArrayBuffer(double[] array)

ReadWriteDoubleArrayBuffer

ReadWriteDoubleArrayBuffer(int capacity)

ReadWriteDoubleArrayBuffer

ReadWriteDoubleArrayBuffer(int capacity,
                           double[] backingArray,
                           int arrayOffset)

Method Detail

copy

static ReadWriteDoubleArrayBuffer copy(DoubleArrayBuffer other,
                                       int markOfOther)

asReadOnlyBuffer

public DoubleBuffer asReadOnlyBuffer()

Description copied from class: DoubleBuffer

Returns a readonly buffer that shares content with this buffer.

The returned buffer is guaranteed to be a new instance, even this buffer is readonly itself. The new buffer's position, limit, capacity and mark are the same as this buffer.

The new buffer shares content with this buffer, which means this buffer's change of content will be visible to the new buffer. The two buffer's position, limit and mark are independent.

Specified by:

asReadOnlyBuffer in class DoubleBuffer

Returns:

A readonly version of this buffer.

compact

public DoubleBuffer compact()

Description copied from class: DoubleBuffer

Compacts this double buffer.

The remaining doubles will be moved to the head of the buffer, staring from position zero. Then the position is set to remaining(); the limit is set to capacity; the mark is cleared.

Specified by:

compact in class DoubleBuffer

Returns:

This buffer

duplicate

public DoubleBuffer duplicate()

Description copied from class: DoubleBuffer

Returns a duplicated buffer that shares content with this buffer.

The duplicated buffer's position, limit, capacity and mark are the same as this buffer. The duplicated buffer's readonly property and byte order are same as this buffer too.

The new buffer shares content with this buffer, which means either buffer's change of content will be visible to the other. The two buffer's position, limit and mark are independent.

Specified by:

duplicate in class DoubleBuffer

Returns:

A duplicated buffer that shares content with this buffer.

isReadOnly

public boolean isReadOnly()

Description copied from class: Buffer

Returns whether this buffer is readonly or not.

Specified by:

isReadOnly in class Buffer

Returns:

Whether this buffer is readonly or not.

protectedArray

protected double[] protectedArray()

Description copied from class: DoubleBuffer

Child class implements this method to realize array().

Specified by:

protectedArray in class DoubleBuffer

Returns:

see array()

protectedArrayOffset

protected int protectedArrayOffset()

Description copied from class: DoubleBuffer

Child class implements this method to realize arrayOffset().

Specified by:

protectedArrayOffset in class DoubleBuffer

Returns:

see arrayOffset()

protectedHasArray

protected boolean protectedHasArray()

Description copied from class: DoubleBuffer

Child class implements this method to realize hasArray().

Specified by:

protectedHasArray in class DoubleBuffer

Returns:

see hasArray()

put

public DoubleBuffer put(double c)

Description copied from class: DoubleBuffer

Writes the given double to the current position and increase the position by 1.

Specified by:

put in class DoubleBuffer

Parameters:

c - The double to write

Returns:

This buffer

put

public DoubleBuffer put(int index,
                        double c)

Description copied from class: DoubleBuffer

Write a double to the specified index of this buffer and the position is not changed.

Specified by:

put in class DoubleBuffer

Parameters:

index - The index, must be no less than zero and less than the limit

c - The double to write

Returns:

This buffer

put

public DoubleBuffer put(double[] src,
                        int off,
                        int len)

Description copied from class: DoubleBuffer

Writes doubles in the given double array, starting from the specified offset, to the current position and increase the position by the number of doubles written.

Overrides:

put in class DoubleBuffer

Parameters:

src - The source double array

off - The offset of double array, must be no less than zero and no greater than src.length

len - The number of doubles to write, must be no less than zero and no greater than src.length - off

Returns:

This buffer

slice

public DoubleBuffer slice()

Description copied from class: DoubleBuffer

Returns a sliced buffer that shares content with this buffer.

The sliced buffer's capacity will be this buffer's remaining(), and its zero position will correspond to this buffer's current position. The new buffer's position will be 0, limit will be its capacity, and its mark is unset. The new buffer's readonly property and byte order are same as this buffer.

The new buffer shares content with this buffer, which means either buffer's change of content will be visible to the other. The two buffer's position, limit and mark are independent.

Specified by:

slice in class DoubleBuffer

Returns:

A sliced buffer that shares content with this buffer.