Class LongBuffer

public static LongBuffer allocate(int capacity)

Allocates a new LongBuffer object with a given capacity.

public final long[] array()

Returns the long 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 LongBuffer asReadOnlyBuffer()

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

public abstract LongBuffer compact()

Compacts this buffer.

Throws:

ReadOnlyBufferException - If this buffer is read-only.

public int compareTo(LongBuffer other)

Compares two LongBuffer objects.

Throws:

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

public abstract LongBuffer duplicate()

Creates a new LongBuffer 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 long get()

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

Throws:

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

public abstract long get(int index)

Absolute get method.

Throws:

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

public LongBuffer get(long[] dst)

This method transfers longs 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 longs remaining in this buffer.

public LongBuffer get(long[] dst,
                      int offset,
                      int length)

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

Parameters:

dst - The destination array

offset - The offset within the array of the first long 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 longs remaining in this buffer.

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

public final boolean hasArray()

Tells whether ot not this buffer is backed by an accessible long 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. 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 LongBuffer put(int index,
                               long 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 LongBuffer put(LongBuffer src)

Writes the content of the the LongBUFFER 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 longs in the source buffer.

IllegalArgumentException - If the source buffer is this buffer.

ReadOnlyBufferException - If this buffer is read-only.

public abstract LongBuffer put(long b)

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

Throws:

BufferOverflowException - If there no remaining longs in this buffer.

ReadOnlyBufferException - If this buffer is read-only.

public final LongBuffer put(long[] src)

Writes the content of the the long 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 longs in the source array.

ReadOnlyBufferException - If this buffer is read-only.

public LongBuffer put(long[] src,
                      int offset,
                      int length)

Writes the content of the the long 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 longs 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 LongBuffer slice()

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

public static final LongBuffer wrap(long[] array)

Wraps a long array into a LongBuffer object.

public static final LongBuffer wrap(long[] array,
                                    int offset,
                                    int length)

Wraps a long array into a LongBuffer object.

Throws:

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