Class DoubleBuffer

public static DoubleBuffer allocate(int capacity)

Allocates a new DoubleBuffer object with a given capacity.

public final double[] array()

Returns the double array that backs this buffer.

Throws:

ReadOnlyBufferException - If this buffer is read-only.

UnsupportedOperationException - If this buffer is not backed by an accessible array.

public final int arrayOffset()

Returns the offset within this buffer's backing array of the first element.

Throws:

ReadOnlyBufferException - If this buffer is read-only.

UnsupportedOperationException - If this buffer is not backed by an accessible array.

public abstract DoubleBuffer asReadOnlyBuffer()

Creates a new read-only DoubleBuffer that shares this buffer's content.

public abstract DoubleBuffer compact()

Compacts this buffer.

Throws:

ReadOnlyBufferException - If this buffer is read-only.

public int compareTo(DoubleBuffer other)

Compares two DoubleBuffer objects.

Throws:

ClassCastException - If obj is not an object derived from DoubleBuffer.

public abstract DoubleBuffer duplicate()

Creates a new DoubleBuffer that shares this buffer's content.

public boolean equals(Object obj)

Checks if this buffer is equal to obj.

Overrides:

equals in interface Object

public abstract double get()

Reads the double at this buffer's current position, and then increments the position.

Throws:

BufferUnderflowException - If there are no remaining doubles in this buffer.

public DoubleBuffer get(double[] dst)

This method transfers doubles from this buffer into the given destination array.

Parameters:

dst - The byte array to write into.

Throws:

BufferUnderflowException - If there are fewer than dst.length doubles remaining in this buffer.

public DoubleBuffer get(double[] dst,
                        int offset,
                        int length)

This method transfers doubles from this buffer into the given destination array. Before the transfer, it checks if there are fewer than length doubles remaining in this buffer.

Parameters:

dst - The destination array

offset - The offset within the array of the first double to be written; must be non-negative and no larger than dst.length.

length - The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.length - offset.

Throws:

BufferUnderflowException - If there are fewer than length doubles remaining in this buffer.

IndexOutOfBoundsException - If the preconditions on the offset and length parameters do not hold.

public abstract double get(int index)

Absolute get method.

Throws:

IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit.

public final boolean hasArray()

Tells whether ot not this buffer is backed by an accessible double array.

public int hashCode()

Calculates a hash code for this buffer. This is done with long arithmetic, where ** represents exponentiation, by this formula:
s[position()] + 31 + (s[position()+1] + 30)*31**1 + ... + (s[limit()-1]+30)*31**(limit()-1). Where s is the buffer data, in Double.doubleToLongBits() form Note that the hashcode is dependent on buffer content, and therefore is not useful if the buffer content may change.

Overrides:

hashCode in interface Object

Returns:

the hash code (casted to int)

public abstract boolean isDirect()

Tells wether or not this buffer is direct.

public abstract ByteOrder order()

Returns the byte order of this buffer.

public abstract DoubleBuffer put(double b)

Writes the double at this buffer's current position, and then increments the position.

Throws:

BufferOverflowException - If there no remaining doubles in this buffer.

ReadOnlyBufferException - If this buffer is read-only.

public final DoubleBuffer put(double[] src)

Writes the content of the the double array src into the buffer.

Parameters:

src - The array to copy into the buffer.

Throws:

BufferOverflowException - If there is insufficient space in this buffer for the remaining doubles in the source array.

ReadOnlyBufferException - If this buffer is read-only.

public DoubleBuffer put(double[] src,
                        int offset,
                        int length)

Writes the content of the the double array src into the buffer. Before the transfer, it checks if there is fewer than length space remaining in this buffer.

Parameters:

src - The array to copy into the buffer.

offset - The offset within the array of the first byte to be read; must be non-negative and no larger than src.length.

length - The number of bytes to be read from the given array; must be non-negative and no larger than src.length - offset.

Throws:

BufferOverflowException - If there is insufficient space in this buffer for the remaining doubles in the source array.

IndexOutOfBoundsException - If the preconditions on the offset and length parameters do not hold

ReadOnlyBufferException - If this buffer is read-only.

public abstract DoubleBuffer put(int index,
                                 double b)

Absolute put method.

Throws:

IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit.

ReadOnlyBufferException - If this buffer is read-only.

public DoubleBuffer put(DoubleBuffer src)

Writes the content of the the DoubleBUFFER src into the buffer. Before the transfer, it checks if there is fewer than src.remaining() space remaining in this buffer.

Parameters:

src - The source data.

Throws:

BufferOverflowException - If there is insufficient space in this buffer for the remaining doubles in the source buffer.

IllegalArgumentException - If the source buffer is this buffer.

ReadOnlyBufferException - If this buffer is read-only.

public abstract DoubleBuffer slice()

Creates a new DoubleBuffer whose content is a shared subsequence of this buffer's content.

public static final DoubleBuffer wrap(double[] array)

Wraps a double array into a DoubleBuffer object.

public static final DoubleBuffer wrap(double[] array,
                                      int offset,
                                      int length)

Wraps a double array into a DoubleBuffer object.

Throws:

IndexOutOfBoundsException - If the preconditions on the offset and length parameters do not hold