java.nio
public abstract class LongBuffer extends Buffer implements Comparable<LongBuffer>
Modifier and Type | Method and Description |
---|---|
static LongBuffer |
allocate(int capacity)
Allocates a new
LongBuffer object with a given capacity. |
long[] |
array()
Returns the
long array that backs this buffer. |
int |
arrayOffset()
Returns the offset within this buffer's backing array of the first element.
|
abstract LongBuffer |
asReadOnlyBuffer()
Creates a new read-only
LongBuffer that shares this
buffer's content. |
abstract LongBuffer |
compact()
Compacts this buffer.
|
int |
compareTo(LongBuffer other)
Compares two
LongBuffer objects. |
abstract LongBuffer |
duplicate()
Creates a new
LongBuffer that shares this buffer's
content. |
boolean |
equals(Object obj)
Checks if this buffer is equal to obj.
|
abstract long |
get()
Reads the
long at this buffer's current position,
and then increments the position. |
abstract long |
get(int index)
Absolute get method.
|
LongBuffer |
get(long[] dst)
This method transfers
long s from this buffer into the given
destination array. |
LongBuffer |
get(long[] dst,
int offset,
int length)
This method transfers
long s from this buffer into the given
destination array. |
boolean |
hasArray()
Tells whether ot not this buffer is backed by an accessible
long array. |
int |
hashCode()
Calculates a hash code for this buffer.
|
abstract boolean |
isDirect()
Tells wether or not this buffer is direct.
|
abstract ByteOrder |
order()
Returns the byte order of this buffer.
|
abstract LongBuffer |
put(int index,
long b)
Absolute put method.
|
abstract LongBuffer |
put(long b)
Writes the
long at this buffer's current position,
and then increments the position. |
LongBuffer |
put(long[] src)
Writes the content of the the
long array src
into the buffer. |
LongBuffer |
put(long[] src,
int offset,
int length)
Writes the content of the the
long array src
into the buffer. |
LongBuffer |
put(LongBuffer src)
Writes the content of the the
LongBUFFER src
into the buffer. |
abstract LongBuffer |
slice()
Creates a new
LongBuffer whose content is a shared
subsequence of this buffer's content. |
static LongBuffer |
wrap(long[] array)
Wraps a
long array into a LongBuffer
object. |
static LongBuffer |
wrap(long[] array,
int offset,
int length)
Wraps a
long array into a LongBuffer
object. |
public static LongBuffer allocate(int capacity)
LongBuffer
object with a given capacity.public static final LongBuffer wrap(long[] array, int offset, int length)
long
array into a LongBuffer
object.IndexOutOfBoundsException
- If the preconditions on the offset
and length parameters do not holdpublic static final LongBuffer wrap(long[] array)
long
array into a LongBuffer
object.public LongBuffer get(long[] dst, int offset, int length)
long
s from this buffer into the given
destination array. Before the transfer, it checks if there are fewer than
length long
s remaining in this buffer.dst
- The destination arrayoffset
- 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.BufferUnderflowException
- If there are fewer than length
long
s remaining in this buffer.IndexOutOfBoundsException
- If the preconditions on the offset
and length parameters do not hold.public LongBuffer get(long[] dst)
long
s from this buffer into the given
destination array.dst
- The byte array to write into.BufferUnderflowException
- If there are fewer than dst.length
long
s remaining in this buffer.public LongBuffer put(LongBuffer src)
LongBUFFER
src
into the buffer. Before the transfer, it checks if there is fewer than
src.remaining()
space remaining in this buffer.src
- The source data.BufferOverflowException
- If there is insufficient space in this
buffer for the remaining long
s in the source buffer.IllegalArgumentException
- If the source buffer is this buffer.ReadOnlyBufferException
- If this buffer is read-only.public LongBuffer put(long[] src, int offset, int length)
long array
src
into the buffer. Before the transfer, it checks if there is fewer than
length space remaining in this buffer.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.BufferOverflowException
- If there is insufficient space in this
buffer for the remaining long
s in the source array.IndexOutOfBoundsException
- If the preconditions on the offset
and length parameters do not holdReadOnlyBufferException
- If this buffer is read-only.public final LongBuffer put(long[] src)
long array
src
into the buffer.src
- The array to copy into the buffer.BufferOverflowException
- If there is insufficient space in this
buffer for the remaining long
s in the source array.ReadOnlyBufferException
- If this buffer is read-only.public final boolean hasArray()
long
array.public final long[] array()
long
array that backs this buffer.ReadOnlyBufferException
- If this buffer is read-only.UnsupportedOperationException
- If this buffer is not backed
by an accessible array.public final int arrayOffset()
ReadOnlyBufferException
- If this buffer is read-only.UnsupportedOperationException
- If this buffer is not backed
by an accessible array.public int hashCode()
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.hashCode
in class Object
Object.equals(Object)
,
System.identityHashCode(Object)
public boolean equals(Object obj)
equals
in class Object
obj
- the Object to compare toObject.hashCode()
public int compareTo(LongBuffer other)
LongBuffer
objects.compareTo
in interface Comparable<LongBuffer>
other
- the object to be comparedClassCastException
- If obj is not an object derived from
LongBuffer
.public abstract long get()
long
at this buffer's current position,
and then increments the position.BufferUnderflowException
- If there are no remaining
long
s in this buffer.public abstract LongBuffer put(long b)
long
at this buffer's current position,
and then increments the position.BufferOverflowException
- If there no remaining
long
s in this buffer.ReadOnlyBufferException
- If this buffer is read-only.public abstract long get(int index)
IndexOutOfBoundsException
- If index is negative or not smaller
than the buffer's limit.public abstract LongBuffer put(int index, long b)
IndexOutOfBoundsException
- If index is negative or not smaller
than the buffer's limit.ReadOnlyBufferException
- If this buffer is read-only.public abstract LongBuffer compact()
ReadOnlyBufferException
- If this buffer is read-only.public abstract boolean isDirect()
public abstract LongBuffer slice()
LongBuffer
whose content is a shared
subsequence of this buffer's content.public abstract LongBuffer duplicate()
LongBuffer
that shares this buffer's
content.public abstract LongBuffer asReadOnlyBuffer()
LongBuffer
that shares this
buffer's content.