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java.nio
Class LongBuffer  view LongBuffer download LongBuffer.java

java.lang.Object
  extended byjava.nio.Buffer
      extended byjava.nio.LongBuffer
All Implemented Interfaces:
java.lang.Comparable
Direct Known Subclasses:
LongBufferImpl, LongViewBufferImpl
public abstract class LongBuffer
extends Buffer
implements java.lang.Comparable

Since:
1.4

Field Summary
(package private)  int array_offset
           
(package private)  long[] backing_buffer
           
 
Fields inherited from class java.nio.Buffer
address, cap, limit, mark, pos
 
Constructor Summary
(package private) LongBuffer(int capacity, int limit, int position, int mark)
           
 
Method Summary
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(java.lang.Object obj)
          Compares two LongBuffer objects.
abstract  LongBuffer duplicate()
          Creates a new LongBuffer that shares this buffer's content.
 boolean equals(java.lang.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 longs from this buffer into the given destination array.
 LongBuffer get(long[] dst, int offset, int length)
          This method transfers longs 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.
 
Methods inherited from class java.nio.Buffer
capacity, checkArraySize, checkForOverflow, checkForOverflow, checkForUnderflow, checkForUnderflow, checkIfReadOnly, checkIndex, clear, flip, hasRemaining, isReadOnly, limit, limit, mark, position, position, remaining, reset, rewind
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

array_offset

int array_offset

backing_buffer

long[] backing_buffer
Constructor Detail

LongBuffer

LongBuffer(int capacity,
           int limit,
           int position,
           int mark)
Method Detail

allocate

public static LongBuffer allocate(int capacity)
Allocates a new LongBuffer object with a given capacity.

wrap

public static final LongBuffer wrap(long[] array,
                                    int offset,
                                    int length)
Wraps a long array into a LongBuffer object.

wrap

public static final LongBuffer wrap(long[] array)
Wraps a long array into a LongBuffer object.

get

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.

get

public LongBuffer get(long[] dst)
This method transfers longs from this buffer into the given destination array.

put

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.

put

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.

put

public final LongBuffer put(long[] src)
Writes the content of the the long array src into the buffer.

hasArray

public final boolean hasArray()
Tells whether ot not this buffer is backed by an accessible long array.

array

public final long[] array()
Returns the long array that backs this buffer.

arrayOffset

public final int arrayOffset()
Returns the offset within this buffer's backing array of the first element.

hashCode

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.

equals

public boolean equals(java.lang.Object obj)
Checks if this buffer is equal to obj.

compareTo

public int compareTo(java.lang.Object obj)
Compares two LongBuffer objects.

Specified by:
compareTo in interface java.lang.Comparable

order

public abstract ByteOrder order()
Returns the byte order of this buffer.

get

public abstract long get()
Reads the long at this buffer's current position, and then increments the position.

put

public abstract LongBuffer put(long b)
Writes the long at this buffer's current position, and then increments the position.

get

public abstract long get(int index)
Absolute get method.

put

public abstract LongBuffer put(int index,
                               long b)
Absolute put method.

compact

public abstract LongBuffer compact()
Compacts this buffer.

isDirect

public abstract boolean isDirect()
Tells wether or not this buffer is direct.

slice

public abstract LongBuffer slice()
Creates a new LongBuffer whose content is a shared subsequence of this buffer's content.

duplicate

public abstract LongBuffer duplicate()
Creates a new LongBuffer that shares this buffer's content.

asReadOnlyBuffer

public abstract LongBuffer asReadOnlyBuffer()
Creates a new read-only LongBuffer that shares this buffer's content.

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