org.jboss.netty.buffer

## Class ChannelBuffers

- java.lang.Object
- - org.jboss.netty.buffer.ChannelBuffers

-     public final class ChannelBuffers
      extends Object

  Creates a new `ChannelBuffer` by allocating new space or by wrapping or copying existing byte arrays, byte buffers and a string.

  ### Use static import

  This classes is intended to be used with Java 5 static import statement:

       import static org.jboss.netty.buffer.ChannelBuffers.*;

       ChannelBuffer heapBuffer    = buffer(128);
       ChannelBuffer directBuffer  = directBuffer(256);
       ChannelBuffer dynamicBuffer = dynamicBuffer(512);
       ChannelBuffer wrappedBuffer = wrappedBuffer(new byte[128], new byte[256]);
       ChannelBuffer copiedBuffe r = copiedBuffer(ByteBuffer.allocate(128));

  ### Allocating a new buffer

  Three buffer types are provided out of the box.
  - `buffer(int)` allocates a new fixed-capacity heap buffer.
  - `directBuffer(int)` allocates a new fixed-capacity direct buffer.
  - `dynamicBuffer(int)` allocates a new dynamic-capacity heap buffer, whose capacity increases automatically as needed by a write operation.

  ### Creating a wrapped buffer

  Wrapped buffer is a buffer which is a view of one or more existing byte arrays and byte buffers. Any changes in the content of the original array or buffer will be visible in the wrapped buffer. Various wrapper methods are provided and their name is all `wrappedBuffer()`. You might want to take a look at the methods that accept varargs closely if you want to create a buffer which is composed of more than one array to reduce the number of memory copy.

  ### Creating a copied buffer

  Copied buffer is a deep copy of one or more existing byte arrays, byte buffers or a string. Unlike a wrapped buffer, there's no shared data between the original data and the copied buffer. Various copy methods are provided and their name is all `copiedBuffer()`. It is also convenient to use this operation to merge multiple buffers into one buffer.

  ### Miscellaneous utility methods

  This class also provides various utility methods to help implementation of a new buffer type, generation of hex dump and swapping an integer's byte order.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static ByteOrder` | `BIG_ENDIAN` Big endian byte order.
    `static ChannelBuffer` | `EMPTY_BUFFER` A buffer whose capacity is `0`.
    `static ByteOrder` | `LITTLE_ENDIAN` Little endian byte order.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static ChannelBuffer` | `buffer(ByteOrder endianness, int capacity)` Creates a new Java heap buffer with the specified `endianness` and `capacity`.
    `static ChannelBuffer` | `buffer(int capacity)` Creates a new big-endian Java heap buffer with the specified `capacity`.
    `static int` | `compare(ChannelBuffer bufferA, ChannelBuffer bufferB)` Compares the two specified buffers as described in `ChannelBuffer.compareTo(ChannelBuffer)`.
    `static ChannelBuffer` | `copiedBuffer(byte[]... arrays)` Creates a new big-endian buffer whose content is a merged copy of the specified `arrays`.
    `static ChannelBuffer` | `copiedBuffer(byte[] array)` Creates a new big-endian buffer whose content is a copy of the specified `array`.
    `static ChannelBuffer` | `copiedBuffer(byte[] array, int offset, int length)` Creates a new big-endian buffer whose content is a copy of the specified `array`'s sub-region.
    `static ChannelBuffer` | `copiedBuffer(ByteBuffer... buffers)` Creates a new buffer whose content is a merged copy of the specified `buffers`' slices.
    `static ChannelBuffer` | `copiedBuffer(ByteBuffer buffer)` Creates a new buffer whose content is a copy of the specified `buffer`'s current slice.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, byte[]... arrays)` Creates a new buffer with the specified `endianness` whose content is a merged copy of the specified `arrays`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, byte[] array)` Creates a new buffer with the specified `endianness` whose content is a copy of the specified `array`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, byte[] array, int offset, int length)` Creates a new buffer with the specified `endianness` whose content is a copy of the specified `array`'s sub-region.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, char[] array, Charset charset)` Creates a new buffer with the specified `endianness` whose content is the specified `array` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, char[] array, int offset, int length, Charset charset)` Creates a new buffer with the specified `endianness` whose content is a subregion of the specified `array` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, CharSequence string, Charset charset)` Creates a new buffer with the specified `endianness` whose content is the specified `string` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, CharSequence string, int offset, int length, Charset charset)` Creates a new buffer with the specified `endianness` whose content is a subregion of the specified `string` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(ByteOrder endianness, String string, String charsetName)` Deprecated. Use `copiedBuffer(ByteOrder, CharSequence, Charset)` instead.
    `static ChannelBuffer` | `copiedBuffer(ChannelBuffer... buffers)` Creates a new buffer whose content is a merged copy of the specified `buffers`' readable bytes.
    `static ChannelBuffer` | `copiedBuffer(ChannelBuffer buffer)` Creates a new buffer whose content is a copy of the specified `buffer`'s readable bytes.
    `static ChannelBuffer` | `copiedBuffer(char[] array, Charset charset)` Creates a new big-endian buffer whose content is the specified `array` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(char[] array, int offset, int length, Charset charset)` Creates a new big-endian buffer whose content is a subregion of the specified `array` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(CharSequence string, Charset charset)` Creates a new big-endian buffer whose content is the specified `string` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(CharSequence string, int offset, int length, Charset charset)` Creates a new big-endian buffer whose content is a subregion of the specified `string` encoded in the specified `charset`.
    `static ChannelBuffer` | `copiedBuffer(String string, String charsetName)` Deprecated. Use `copiedBuffer(CharSequence, Charset)` instead.
    `static ChannelBuffer` | `directBuffer(ByteOrder endianness, int capacity)` Creates a new direct buffer with the specified `endianness` and `capacity`.
    `static ChannelBuffer` | `directBuffer(int capacity)` Creates a new big-endian direct buffer with the specified `capacity`.
    `static ChannelBuffer` | `dynamicBuffer()` Creates a new big-endian dynamic buffer whose estimated data length is `256` bytes.
    `static ChannelBuffer` | `dynamicBuffer(ByteOrder endianness, int estimatedLength)` Creates a new dynamic buffer with the specified endianness and the specified estimated data length.
    `static ChannelBuffer` | `dynamicBuffer(ByteOrder endianness, int estimatedLength, ChannelBufferFactory factory)` Creates a new dynamic buffer with the specified endianness and the specified estimated data length using the specified factory.
    `static ChannelBuffer` | `dynamicBuffer(ChannelBufferFactory factory)`
    `static ChannelBuffer` | `dynamicBuffer(int estimatedLength)` Creates a new big-endian dynamic buffer with the specified estimated data length.
    `static ChannelBuffer` | `dynamicBuffer(int estimatedLength, ChannelBufferFactory factory)` Creates a new big-endian dynamic buffer with the specified estimated data length using the specified factory.
    `static boolean` | `equals(ChannelBuffer bufferA, ChannelBuffer bufferB)` Returns `true` if and only if the two specified buffers are identical to each other as described in `ChannelBuffer#equals(Object)`.
    `static int` | `hashCode(ChannelBuffer buffer)` Calculates the hash code of the specified buffer.
    `static String` | `hexDump(ChannelBuffer buffer)` Returns a hex dump of the specified buffer's readable bytes.
    `static String` | `hexDump(ChannelBuffer buffer, int fromIndex, int length)` Returns a hex dump of the specified buffer's sub-region.
    `static ChannelBuffer` | `hexDump(String hexString)` Create a `ChannelBuffer` from the given hex dump
    `static int` | `indexOf(ChannelBuffer buffer, int fromIndex, int toIndex, byte value)` The default implementation of `ChannelBuffer.indexOf(int, int, byte)`.
    `static int` | `indexOf(ChannelBuffer buffer, int fromIndex, int toIndex, ChannelBufferIndexFinder indexFinder)` The default implementation of `ChannelBuffer.indexOf(int, int, ChannelBufferIndexFinder)`.
    `static int` | `swapInt(int value)` Toggles the endianness of the specified 32-bit integer.
    `static long` | `swapLong(long value)` Toggles the endianness of the specified 64-bit long integer.
    `static int` | `swapMedium(int value)` Toggles the endianness of the specified 24-bit medium integer.
    `static short` | `swapShort(short value)` Toggles the endianness of the specified 16-bit short integer.
    `static ChannelBuffer` | `unmodifiableBuffer(ChannelBuffer buffer)` Creates a read-only buffer which disallows any modification operations on the specified `buffer`.
    `static ChannelBuffer` | `wrappedBuffer(boolean gathering, ByteBuffer... buffers)` Creates a new composite buffer which wraps the slices of the specified NIO buffers without copying them.
    `static ChannelBuffer` | `wrappedBuffer(boolean gathering, ChannelBuffer... buffers)` Creates a new composite buffer which wraps the readable bytes of the specified buffers without copying them.
    `static ChannelBuffer` | `wrappedBuffer(byte[]... arrays)` Creates a new big-endian composite buffer which wraps the specified arrays without copying them.
    `static ChannelBuffer` | `wrappedBuffer(byte[] array)` Creates a new big-endian buffer which wraps the specified `array`.
    `static ChannelBuffer` | `wrappedBuffer(byte[] array, int offset, int length)` Creates a new big-endian buffer which wraps the sub-region of the specified `array`.
    `static ChannelBuffer` | `wrappedBuffer(ByteBuffer... buffers)` Creates a new composite buffer which wraps the slices of the specified NIO buffers without copying them.
    `static ChannelBuffer` | `wrappedBuffer(ByteBuffer buffer)` Creates a new buffer which wraps the specified NIO buffer's current slice.
    `static ChannelBuffer` | `wrappedBuffer(ByteOrder endianness, byte[]... arrays)` Creates a new composite buffer which wraps the specified arrays without copying them.
    `static ChannelBuffer` | `wrappedBuffer(ByteOrder endianness, byte[] array)` Creates a new buffer which wraps the specified `array` with the specified `endianness`.
    `static ChannelBuffer` | `wrappedBuffer(ByteOrder endianness, byte[] array, int offset, int length)` Creates a new buffer which wraps the sub-region of the specified `array` with the specified `endianness`.
    `static ChannelBuffer` | `wrappedBuffer(ChannelBuffer... buffers)` Creates a new composite buffer which wraps the readable bytes of the specified buffers without copying them.
    `static ChannelBuffer` | `wrappedBuffer(ChannelBuffer buffer)` Creates a new buffer which wraps the specified buffer's readable bytes.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### BIG_ENDIAN

          public static final ByteOrder BIG_ENDIAN

      Big endian byte order.

    - #### LITTLE_ENDIAN

          public static final ByteOrder LITTLE_ENDIAN

      Little endian byte order.

    - #### EMPTY_BUFFER

          public static final ChannelBuffer EMPTY_BUFFER

      A buffer whose capacity is `0`.

  - ### Method Detail

    - #### buffer

          public static ChannelBuffer buffer(int capacity)

      Creates a new big-endian Java heap buffer with the specified `capacity`. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### buffer

          public static ChannelBuffer buffer(ByteOrder endianness,
                             int capacity)

      Creates a new Java heap buffer with the specified `endianness` and `capacity`. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### directBuffer

          public static ChannelBuffer directBuffer(int capacity)

      Creates a new big-endian direct buffer with the specified `capacity`. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### directBuffer

          public static ChannelBuffer directBuffer(ByteOrder endianness,
                                   int capacity)

      Creates a new direct buffer with the specified `endianness` and `capacity`. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer()

      Creates a new big-endian dynamic buffer whose estimated data length is `256` bytes. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer(ChannelBufferFactory factory)

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer(int estimatedLength)

      Creates a new big-endian dynamic buffer with the specified estimated data length. More accurate estimation yields less unexpected reallocation overhead. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer(ByteOrder endianness,
                                    int estimatedLength)

      Creates a new dynamic buffer with the specified endianness and the specified estimated data length. More accurate estimation yields less unexpected reallocation overhead. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer(int estimatedLength,
                                    ChannelBufferFactory factory)

      Creates a new big-endian dynamic buffer with the specified estimated data length using the specified factory. More accurate estimation yields less unexpected reallocation overhead. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### dynamicBuffer

          public static ChannelBuffer dynamicBuffer(ByteOrder endianness,
                                    int estimatedLength,
                                    ChannelBufferFactory factory)

      Creates a new dynamic buffer with the specified endianness and the specified estimated data length using the specified factory. More accurate estimation yields less unexpected reallocation overhead. The new buffer's `readerIndex` and `writerIndex` are `0`.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(byte[] array)

      Creates a new big-endian buffer which wraps the specified `array`. A modification on the specified array's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ByteOrder endianness,
                                    byte[] array)

      Creates a new buffer which wraps the specified `array` with the specified `endianness`. A modification on the specified array's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(byte[] array,
                                    int offset,
                                    int length)

      Creates a new big-endian buffer which wraps the sub-region of the specified `array`. A modification on the specified array's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ByteOrder endianness,
                                    byte[] array,
                                    int offset,
                                    int length)

      Creates a new buffer which wraps the sub-region of the specified `array` with the specified `endianness`. A modification on the specified array's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ByteBuffer buffer)

      Creates a new buffer which wraps the specified NIO buffer's current slice. A modification on the specified buffer's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ChannelBuffer buffer)

      Creates a new buffer which wraps the specified buffer's readable bytes. A modification on the specified buffer's content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(byte[]... arrays)

      Creates a new big-endian composite buffer which wraps the specified arrays without copying them. A modification on the specified arrays' content will be visible to the returned buffer.

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ByteOrder endianness,
                                    byte[]... arrays)

      Creates a new composite buffer which wraps the specified arrays without copying them. A modification on the specified arrays' content will be visible to the returned buffer.
      Parameters:
        `endianness` - the endianness of the new buffer

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ChannelBuffer... buffers)

      Creates a new composite buffer which wraps the readable bytes of the specified buffers without copying them. A modification on the content of the specified buffers will be visible to the returned buffer.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(boolean gathering,
                                    ChannelBuffer... buffers)

      Creates a new composite buffer which wraps the readable bytes of the specified buffers without copying them. A modification on the content of the specified buffers will be visible to the returned buffer. If gathering is `true` then gathering writes will be used when ever possible.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(ByteBuffer... buffers)

      Creates a new composite buffer which wraps the slices of the specified NIO buffers without copying them. A modification on the content of the specified buffers will be visible to the returned buffer.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### wrappedBuffer

          public static ChannelBuffer wrappedBuffer(boolean gathering,
                                    ByteBuffer... buffers)

      Creates a new composite buffer which wraps the slices of the specified NIO buffers without copying them. A modification on the content of the specified buffers will be visible to the returned buffer. If gathering is `true` then gathering writes will be used when ever possible.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(byte[] array)

      Creates a new big-endian buffer whose content is a copy of the specified `array`. The new buffer's `readerIndex` and `writerIndex` are `0` and `array.length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   byte[] array)

      Creates a new buffer with the specified `endianness` whose content is a copy of the specified `array`. The new buffer's `readerIndex` and `writerIndex` are `0` and `array.length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(byte[] array,
                                   int offset,
                                   int length)

      Creates a new big-endian buffer whose content is a copy of the specified `array`'s sub-region. The new buffer's `readerIndex` and `writerIndex` are `0` and the specified `length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   byte[] array,
                                   int offset,
                                   int length)

      Creates a new buffer with the specified `endianness` whose content is a copy of the specified `array`'s sub-region. The new buffer's `readerIndex` and `writerIndex` are `0` and the specified `length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteBuffer buffer)

      Creates a new buffer whose content is a copy of the specified `buffer`'s current slice. The new buffer's `readerIndex` and `writerIndex` are `0` and `buffer.remaining` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ChannelBuffer buffer)

      Creates a new buffer whose content is a copy of the specified `buffer`'s readable bytes. The new buffer's `readerIndex` and `writerIndex` are `0` and `buffer.readableBytes` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(byte[]... arrays)

      Creates a new big-endian buffer whose content is a merged copy of the specified `arrays`. The new buffer's `readerIndex` and `writerIndex` are `0` and the sum of all arrays' `length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   byte[]... arrays)

      Creates a new buffer with the specified `endianness` whose content is a merged copy of the specified `arrays`. The new buffer's `readerIndex` and `writerIndex` are `0` and the sum of all arrays' `length` respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ChannelBuffer... buffers)

      Creates a new buffer whose content is a merged copy of the specified `buffers`' readable bytes. The new buffer's `readerIndex` and `writerIndex` are `0` and the sum of all buffers' `readableBytes` respectively.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteBuffer... buffers)

      Creates a new buffer whose content is a merged copy of the specified `buffers`' slices. The new buffer's `readerIndex` and `writerIndex` are `0` and the sum of all buffers' `remaining` respectively.
      Throws:
        `IllegalArgumentException` - if the specified buffers' endianness are different from each other

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(CharSequence string,
                                   Charset charset)

      Creates a new big-endian buffer whose content is the specified `string` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(CharSequence string,
                                   int offset,
                                   int length,
                                   Charset charset)

      Creates a new big-endian buffer whose content is a subregion of the specified `string` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   CharSequence string,
                                   Charset charset)

      Creates a new buffer with the specified `endianness` whose content is the specified `string` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   CharSequence string,
                                   int offset,
                                   int length,
                                   Charset charset)

      Creates a new buffer with the specified `endianness` whose content is a subregion of the specified `string` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(char[] array,
                                   Charset charset)

      Creates a new big-endian buffer whose content is the specified `array` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(char[] array,
                                   int offset,
                                   int length,
                                   Charset charset)

      Creates a new big-endian buffer whose content is a subregion of the specified `array` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   char[] array,
                                   Charset charset)

      Creates a new buffer with the specified `endianness` whose content is the specified `array` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                   char[] array,
                                   int offset,
                                   int length,
                                   Charset charset)

      Creates a new buffer with the specified `endianness` whose content is a subregion of the specified `array` encoded in the specified `charset`. The new buffer's `readerIndex` and `writerIndex` are `0` and the length of the encoded string respectively.

    - #### copiedBuffer

          @Deprecated
          public static ChannelBuffer copiedBuffer(String string,
                                              String charsetName)

      Deprecated. Use `copiedBuffer(CharSequence, Charset)` instead.

    - #### copiedBuffer

          @Deprecated
          public static ChannelBuffer copiedBuffer(ByteOrder endianness,
                                              String string,
                                              String charsetName)

      Deprecated. Use `copiedBuffer(ByteOrder, CharSequence, Charset)` instead.

    - #### unmodifiableBuffer

          public static ChannelBuffer unmodifiableBuffer(ChannelBuffer buffer)

      Creates a read-only buffer which disallows any modification operations on the specified `buffer`. The new buffer has the same `readerIndex` and `writerIndex` with the specified `buffer`.

    - #### hexDump

          public static ChannelBuffer hexDump(String hexString)

      Create a `ChannelBuffer` from the given hex dump

    - #### hexDump

          public static String hexDump(ChannelBuffer buffer)

      Returns a hex dump of the specified buffer's readable bytes.

    - #### hexDump

          public static String hexDump(ChannelBuffer buffer,
                       int fromIndex,
                       int length)

      Returns a hex dump of the specified buffer's sub-region.

    - #### hashCode

          public static int hashCode(ChannelBuffer buffer)

      Calculates the hash code of the specified buffer. This method is useful when implementing a new buffer type.

    - #### equals

          public static boolean equals(ChannelBuffer bufferA,
                       ChannelBuffer bufferB)

      Returns `true` if and only if the two specified buffers are identical to each other as described in `ChannelBuffer#equals(Object)`. This method is useful when implementing a new buffer type.

    - #### compare

          public static int compare(ChannelBuffer bufferA,
                    ChannelBuffer bufferB)

      Compares the two specified buffers as described in `ChannelBuffer.compareTo(ChannelBuffer)`. This method is useful when implementing a new buffer type.

    - #### indexOf

          public static int indexOf(ChannelBuffer buffer,
                    int fromIndex,
                    int toIndex,
                    byte value)

      The default implementation of `ChannelBuffer.indexOf(int, int, byte)`. This method is useful when implementing a new buffer type.

    - #### indexOf

          public static int indexOf(ChannelBuffer buffer,
                    int fromIndex,
                    int toIndex,
                    ChannelBufferIndexFinder indexFinder)

      The default implementation of `ChannelBuffer.indexOf(int, int, ChannelBufferIndexFinder)`. This method is useful when implementing a new buffer type.

    - #### swapShort

          public static short swapShort(short value)

      Toggles the endianness of the specified 16-bit short integer.

    - #### swapMedium

          public static int swapMedium(int value)

      Toggles the endianness of the specified 24-bit medium integer.

    - #### swapInt

          public static int swapInt(int value)

      Toggles the endianness of the specified 32-bit integer.

    - #### swapLong

          public static long swapLong(long value)

      Toggles the endianness of the specified 64-bit long integer.

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