Buffers | Description |
|---|
| {@link java.nio.Buffer} |
Position, limit, and capacity;
clear, flip, rewind, and mark/reset |
| {@link java.nio.ByteBuffer} |
Get/put, compact, views; allocate, wrap |
| {@link java.nio.MappedByteBuffer} |
A byte buffer mapped to a file |
| {@link java.nio.CharBuffer} |
Get/put, compact; allocate, wrap |
| {@link java.nio.DoubleBuffer} |
' ' |
| {@link java.nio.FloatBuffer} |
' ' |
| {@link java.nio.IntBuffer} |
' ' |
| {@link java.nio.LongBuffer} |
' ' |
| {@link java.nio.ShortBuffer} |
' ' |
| {@link java.nio.ByteOrder} |
Typesafe enumeration for byte orders |
A buffer is a container for a fixed amount of data of a specific
primitive type. In addition to its content a buffer has a position,
which is the index of the next element to be read or written, and a
limit, which is the index of the first element that should not be read
or written. The base {@link java.nio.Buffer} class defines these properties as
well as methods for clearing, flipping, and rewinding, for
marking the current position, and for resetting the position to
the previous mark.
There is a buffer class for each non-boolean primitive type. Each class
defines a family of get and put methods for moving data out of
and in to a buffer, methods for compacting, duplicating, and
slicing a buffer, and static methods for allocating a new buffer
as well as for wrapping an existing array into a buffer.
Byte buffers are distinguished in that they can be used as the sources and
targets of I/O operations. They also support several features not found in the
other buffer classes:
A byte buffer can be allocated as a
direct buffer, in which case the Java virtual machine will make a
best effort to perform native I/O operations directly upon it.
A byte buffer can be created by {@link
java.nio.channels.FileChannel#map mapping} a region of a
file directly into memory, in which case a few additional file-related
operations defined in the {@link java.nio.MappedByteBuffer} class are
available.
A byte buffer provides access to its content as either a heterogeneous
or homogeneous sequence of binary data
of any non-boolean primitive type, in either big-endian or little-endian byte order.
Unless otherwise noted, passing a null argument to a constructor
or method in any class or interface in this package will cause a {@link
java.lang.NullPointerException NullPointerException} to be thrown.
@since 1.4
@version 1.18, 07/05/05
@author Mark Reinhold
@author JSR-51 Expert Group