public abstract class DoubleBuffer extends Buffer
implements Comparable<DoubleBuffer>

A double buffer.

This class defines four categories of operations upon double buffers:

  • Absolute and relative get and put methods that read and write single doubles;

  • Relative bulk get methods that transfer contiguous sequences of doubles from this buffer into an array; and

  • Relative bulk put methods that transfer contiguous sequences of doubles from a double array or some other double buffer into this buffer; and

  • Methods for compacting, duplicating, and slicing a double buffer.

Double buffers can be created either by allocation, which allocates space for the buffer's content, by wrapping an existing double array into a buffer, or by creating a view of an existing byte buffer.

Like a byte buffer, a double buffer is either direct or non-direct. A double buffer created via the wrap methods of this class will be non-direct. A double buffer created as a view of a byte buffer will be direct if, and only if, the byte buffer itself is direct. Whether or not a double buffer is direct may be determined by invoking the isDirect method.

Methods in this class that do not otherwise have a value to return are specified to return the buffer upon which they are invoked. This allows method invocations to be chained.

Public Method Summary

static DoubleBuffer
allocate(int capacity)
Allocates a new double buffer.
final double[]
Returns the double array that backs this buffer  (optional operation).
final int
Returns the offset within this buffer's backing array of the first element of the buffer  (optional operation).
abstract DoubleBuffer
Creates a new, read-only double buffer that shares this buffer's content.
abstract DoubleBuffer
Compacts this buffer  (optional operation).