AbstractByteBuf (Netty API Reference (5.0.0.Alpha2))

java.lang.Object
- io.netty.buffer.ByteBuf
- - io.netty.buffer.AbstractByteBuf

All Implemented Interfaces:

ReferenceCounted, Comparable<ByteBuf>

Direct Known Subclasses:

AbstractDerivedByteBuf, AbstractReferenceCountedByteBuf
```
public abstract class AbstractByteBuf
extends ByteBuf
```
A skeletal implementation of a buffer.

Constructor Summary

Constructors
Modifier Constructor and Description

protected AbstractByteBuf(int maxCapacity)

Constructors
Modifier	Constructor and Description
`protected`	`AbstractByteBuf(int maxCapacity)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected abstract byte`	`_getByte(int index)`
`protected abstract int`	`_getInt(int index)`
`protected abstract long`	`_getLong(int index)`
`protected abstract short`	`_getShort(int index)`
`protected abstract int`	`_getUnsignedMedium(int index)`
`protected abstract void`	`_setByte(int index, int value)`
`protected abstract void`	`_setInt(int index, int value)`
`protected abstract void`	`_setLong(int index, long value)`
`protected abstract void`	`_setMedium(int index, int value)`
`protected abstract void`	`_setShort(int index, int value)`
`protected void`	`adjustMarkers(int decrement)`
`int`	`bytesBefore(byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`bytesBefore(int length, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`bytesBefore(int index, int length, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`protected void`	`checkDstIndex(int index, int length, int dstIndex, int dstCapacity)`
`protected void`	`checkIndex(int index)`
`protected void`	`checkIndex(int index, int fieldLength)`
`protected void`	`checkReadableBytes(int minimumReadableBytes)` Throws an `IndexOutOfBoundsException` if the current readable bytes of this buffer is less than the specified value.
`protected void`	`checkSrcIndex(int index, int length, int srcIndex, int srcCapacity)`
`ByteBuf`	`clear()` Sets the `readerIndex` and `writerIndex` of this buffer to `0`.
`int`	`compareTo(ByteBuf that)` Compares the content of the specified buffer to the content of this buffer.
`ByteBuf`	`copy()` Returns a copy of this buffer's readable bytes.
`ByteBuf`	`discardReadBytes()` Discards the bytes between the 0th index and `readerIndex`.
`ByteBuf`	`discardSomeReadBytes()` Similar to `ByteBuf.discardReadBytes()` except that this method might discard some, all, or none of read bytes depending on its internal implementation to reduce overall memory bandwidth consumption at the cost of potentially additional memory consumption.
`ByteBuf`	`duplicate()` Returns a buffer which shares the whole region of this buffer.
`protected void`	`ensureAccessible()` Should be called by every method that tries to access the buffers content to check if the buffer was released before.
`ByteBuf`	`ensureWritable(int minWritableBytes)` Makes sure the number of the writable bytes is equal to or greater than the specified value.
`int`	`ensureWritable(int minWritableBytes, boolean force)` Tries to make sure the number of the writable bytes is equal to or greater than the specified value.
`boolean`	`equals(Object o)` Determines if the content of the specified buffer is identical to the content of this array.
`int`	`forEachByte(ByteBufProcessor processor)` Iterates over the readable bytes of this buffer with the specified `processor` in ascending order.
`int`	`forEachByte(int index, int length, ByteBufProcessor processor)` Iterates over the specified area of this buffer with the specified `processor` in ascending order.
`int`	`forEachByteDesc(ByteBufProcessor processor)` Iterates over the readable bytes of this buffer with the specified `processor` in descending order.
`int`	`forEachByteDesc(int index, int length, ByteBufProcessor processor)` Iterates over the specified area of this buffer with the specified `processor` in descending order.
`boolean`	`getBoolean(int index)` Gets a boolean at the specified absolute (@code index) in this buffer.
`byte`	`getByte(int index)` Gets a byte at the specified absolute `index` in this buffer.
`ByteBuf`	`getBytes(int index, byte[] dst)` Transfers this buffer's data to the specified destination starting at the specified absolute `index`.
`ByteBuf`	`getBytes(int index, ByteBuf dst)` Transfers this buffer's data to the specified destination starting at the specified absolute `index` until the destination becomes non-writable.
`ByteBuf`	`getBytes(int index, ByteBuf dst, int length)` Transfers this buffer's data to the specified destination starting at the specified absolute `index`.
`char`	`getChar(int index)` Gets a 2-byte UTF-16 character at the specified absolute `index` in this buffer.
`double`	`getDouble(int index)` Gets a 64-bit floating point number at the specified absolute `index` in this buffer.
`float`	`getFloat(int index)` Gets a 32-bit floating point number at the specified absolute `index` in this buffer.
`int`	`getInt(int index)` Gets a 32-bit integer at the specified absolute `index` in this buffer.
`long`	`getLong(int index)` Gets a 64-bit long integer at the specified absolute `index` in this buffer.
`int`	`getMedium(int index)` Gets a 24-bit medium integer at the specified absolute `index` in this buffer.
`short`	`getShort(int index)` Gets a 16-bit short integer at the specified absolute `index` in this buffer.
`short`	`getUnsignedByte(int index)` Gets an unsigned byte at the specified absolute `index` in this buffer.
`long`	`getUnsignedInt(int index)` Gets an unsigned 32-bit integer at the specified absolute `index` in this buffer.
`int`	`getUnsignedMedium(int index)` Gets an unsigned 24-bit medium integer at the specified absolute `index` in this buffer.
`int`	`getUnsignedShort(int index)` Gets an unsigned 16-bit short integer at the specified absolute `index` in this buffer.
`int`	`hashCode()` Returns a hash code which was calculated from the content of this buffer.
`int`	`indexOf(int fromIndex, int toIndex, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`boolean`	`isReadable()` Returns `true` if and only if `(this.writerIndex - this.readerIndex)` is greater than `0`.
`boolean`	`isReadable(int numBytes)` Returns `true` if and only if this buffer contains equal to or more than the specified number of elements.
`boolean`	`isWritable()` Returns `true` if and only if `(this.capacity - this.writerIndex)` is greater than `0`.
`boolean`	`isWritable(int numBytes)` Returns `true` if and only if this buffer has enough room to allow writing the specified number of elements.
`ByteBuf`	`markReaderIndex()` Marks the current `readerIndex` in this buffer.
`ByteBuf`	`markWriterIndex()` Marks the current `writerIndex` in this buffer.
`int`	`maxCapacity()` Returns the maximum allowed capacity of this buffer.
`protected void`	`maxCapacity(int maxCapacity)`
`int`	`maxWritableBytes()` Returns the maximum possible number of writable bytes, which is equal to `(this.maxCapacity - this.writerIndex)`.
`protected SwappedByteBuf`	`newSwappedByteBuf()` Creates a new `SwappedByteBuf` for this `ByteBuf` instance.
`ByteBuffer`	`nioBuffer()` Exposes this buffer's readable bytes as an NIO `ByteBuffer`.
`ByteBuffer[]`	`nioBuffers()` Exposes this buffer's readable bytes as an NIO `ByteBuffer`'s.
`ByteBuf`	`order(ByteOrder endianness)` Returns a buffer with the specified `endianness` which shares the whole region, indexes, and marks of this buffer.
`int`	`readableBytes()` Returns the number of readable bytes which is equal to `(this.writerIndex - this.readerIndex)`.
`boolean`	`readBoolean()` Gets a boolean at the current `readerIndex` and increases the `readerIndex` by `1` in this buffer.
`byte`	`readByte()` Gets a byte at the current `readerIndex` and increases the `readerIndex` by `1` in this buffer.
`ByteBuf`	`readBytes(byte[] dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `dst.length`).
`ByteBuf`	`readBytes(byte[] dst, int dstIndex, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`ByteBuf`	`readBytes(ByteBuf dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` until the destination becomes non-writable, and increases the `readerIndex` by the number of the transferred bytes.
`ByteBuf`	`readBytes(ByteBuffer dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` until the destination's position reaches its limit, and increases the `readerIndex` by the number of the transferred bytes.
`ByteBuf`	`readBytes(ByteBuf dst, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`ByteBuf`	`readBytes(ByteBuf dst, int dstIndex, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`int`	`readBytes(GatheringByteChannel out, int length)` Transfers this buffer's data to the specified stream starting at the current `readerIndex`.
`ByteBuf`	`readBytes(int length)` Transfers this buffer's data to a newly created buffer starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`ByteBuf`	`readBytes(OutputStream out, int length)` Transfers this buffer's data to the specified stream starting at the current `readerIndex`.
`char`	`readChar()` Gets a 2-byte UTF-16 character at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`double`	`readDouble()` Gets a 64-bit floating point number at the current `readerIndex` and increases the `readerIndex` by `8` in this buffer.
`int`	`readerIndex()` Returns the `readerIndex` of this buffer.
`ByteBuf`	`readerIndex(int readerIndex)` Sets the `readerIndex` of this buffer.
`float`	`readFloat()` Gets a 32-bit floating point number at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`int`	`readInt()` Gets a 32-bit integer at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`long`	`readLong()` Gets a 64-bit integer at the current `readerIndex` and increases the `readerIndex` by `8` in this buffer.
`int`	`readMedium()` Gets a 24-bit medium integer at the current `readerIndex` and increases the `readerIndex` by `3` in this buffer.
`short`	`readShort()` Gets a 16-bit short integer at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`ByteBuf`	`readSlice(int length)` Returns a new slice of this buffer's sub-region starting at the current `readerIndex` and increases the `readerIndex` by the size of the new slice (= `length`).
`short`	`readUnsignedByte()` Gets an unsigned byte at the current `readerIndex` and increases the `readerIndex` by `1` in this buffer.
`long`	`readUnsignedInt()` Gets an unsigned 32-bit integer at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`int`	`readUnsignedMedium()` Gets an unsigned 24-bit medium integer at the current `readerIndex` and increases the `readerIndex` by `3` in this buffer.
`int`	`readUnsignedShort()` Gets an unsigned 16-bit short integer at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`ByteBuf`	`resetReaderIndex()` Repositions the current `readerIndex` to the marked `readerIndex` in this buffer.
`ByteBuf`	`resetWriterIndex()` Repositions the current `writerIndex` to the marked `writerIndex` in this buffer.
`ByteBuf`	`setBoolean(int index, boolean value)` Sets the specified boolean at the specified absolute `index` in this buffer.
`ByteBuf`	`setByte(int index, int value)` Sets the specified byte at the specified absolute `index` in this buffer.
`ByteBuf`	`setBytes(int index, byte[] src)` Transfers the specified source array's data to this buffer starting at the specified absolute `index`.
`ByteBuf`	`setBytes(int index, ByteBuf src)` Transfers the specified source buffer's data to this buffer starting at the specified absolute `index` until the source buffer becomes unreadable.
`ByteBuf`	`setBytes(int index, ByteBuf src, int length)` Transfers the specified source buffer's data to this buffer starting at the specified absolute `index`.
`ByteBuf`	`setChar(int index, int value)` Sets the specified 2-byte UTF-16 character at the specified absolute `index` in this buffer.
`ByteBuf`	`setDouble(int index, double value)` Sets the specified 64-bit floating-point number at the specified absolute `index` in this buffer.
`ByteBuf`	`setFloat(int index, float value)` Sets the specified 32-bit floating-point number at the specified absolute `index` in this buffer.
`ByteBuf`	`setIndex(int readerIndex, int writerIndex)` Sets the `readerIndex` and `writerIndex` of this buffer in one shot.
`ByteBuf`	`setInt(int index, int value)` Sets the specified 32-bit integer at the specified absolute `index` in this buffer.
`ByteBuf`	`setLong(int index, long value)` Sets the specified 64-bit long integer at the specified absolute `index` in this buffer.
`ByteBuf`	`setMedium(int index, int value)` Sets the specified 24-bit medium integer at the specified absolute `index` in this buffer.
`ByteBuf`	`setShort(int index, int value)` Sets the specified 16-bit short integer at the specified absolute `index` in this buffer.
`ByteBuf`	`setZero(int index, int length)` Fills this buffer with `NUL (0x00)` starting at the specified absolute `index`.
`ByteBuf`	`skipBytes(int length)` Increases the current `readerIndex` by the specified `length` in this buffer.
`ByteBuf`	`slice()` Returns a slice of this buffer's readable bytes.
`ByteBuf`	`slice(int index, int length)` Returns a slice of this buffer's sub-region.
`String`	`toString()` Returns the string representation of this buffer.
`String`	`toString(Charset charset)` Decodes this buffer's readable bytes into a string with the specified character set name.
`String`	`toString(int index, int length, Charset charset)` Decodes this buffer's sub-region into a string with the specified character set.
`int`	`writableBytes()` Returns the number of writable bytes which is equal to `(this.capacity - this.writerIndex)`.
`ByteBuf`	`writeBoolean(boolean value)` Sets the specified boolean at the current `writerIndex` and increases the `writerIndex` by `1` in this buffer.
`ByteBuf`	`writeByte(int value)` Sets the specified byte at the current `writerIndex` and increases the `writerIndex` by `1` in this buffer.
`ByteBuf`	`writeBytes(byte[] src)` Transfers the specified source array's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `src.length`).
`ByteBuf`	`writeBytes(byte[] src, int srcIndex, int length)` Transfers the specified source array's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`ByteBuf`	`writeBytes(ByteBuf src)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` until the source buffer becomes unreadable, and increases the `writerIndex` by the number of the transferred bytes.
`ByteBuf`	`writeBytes(ByteBuffer src)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` until the source buffer's position reaches its limit, and increases the `writerIndex` by the number of the transferred bytes.
`ByteBuf`	`writeBytes(ByteBuf src, int length)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`ByteBuf`	`writeBytes(ByteBuf src, int srcIndex, int length)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`int`	`writeBytes(InputStream in, int length)` Transfers the content of the specified stream to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes.
`int`	`writeBytes(ScatteringByteChannel in, int length)` Transfers the content of the specified channel to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes.
`ByteBuf`	`writeChar(int value)` Sets the specified 2-byte UTF-16 character at the current `writerIndex` and increases the `writerIndex` by `2` in this buffer.
`ByteBuf`	`writeDouble(double value)` Sets the specified 64-bit floating point number at the current `writerIndex` and increases the `writerIndex` by `8` in this buffer.
`ByteBuf`	`writeFloat(float value)` Sets the specified 32-bit floating point number at the current `writerIndex` and increases the `writerIndex` by `4` in this buffer.
`ByteBuf`	`writeInt(int value)` Sets the specified 32-bit integer at the current `writerIndex` and increases the `writerIndex` by `4` in this buffer.
`ByteBuf`	`writeLong(long value)` Sets the specified 64-bit long integer at the current `writerIndex` and increases the `writerIndex` by `8` in this buffer.
`ByteBuf`	`writeMedium(int value)` Sets the specified 24-bit medium integer at the current `writerIndex` and increases the `writerIndex` by `3` in this buffer.
`int`	`writerIndex()` Returns the `writerIndex` of this buffer.
`ByteBuf`	`writerIndex(int writerIndex)` Sets the `writerIndex` of this buffer.
`ByteBuf`	`writeShort(int value)` Sets the specified 16-bit short integer at the current `writerIndex` and increases the `writerIndex` by `2` in this buffer.
`ByteBuf`	`writeZero(int length)` Fills this buffer with `NUL (0x00)` starting at the current `writerIndex` and increases the `writerIndex` by the specified `length`.

Methods inherited from class io.netty.buffer.ByteBuf
alloc, array, arrayOffset, capacity, capacity, copy, getBytes, getBytes, getBytes, getBytes, getBytes, hasArray, hasMemoryAddress, internalNioBuffer, isDirect, memoryAddress, nioBuffer, nioBufferCount, nioBuffers, order, retain, retain, setBytes, setBytes, setBytes, setBytes, setBytes, touch, touch, unwrap

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.netty.util.ReferenceCounted
refCnt, release, release

- Constructor Detail
  - AbstractByteBuf
```
protected AbstractByteBuf(int maxCapacity)
```
- Method Detail
  - maxCapacity
```
public int maxCapacity()
```
    Description copied from class: ByteBuf
    
    Returns the maximum allowed capacity of this buffer. If a user attempts to increase the capacity of this buffer beyond the maximum capacity using ByteBuf.capacity(int) or ByteBuf.ensureWritable(int), those methods will raise an IllegalArgumentException.
    
    Specified by:
    
    maxCapacity in class ByteBuf
  - maxCapacity
```
protected final void maxCapacity(int maxCapacity)
```
  - readerIndex
```
public int readerIndex()
```
    Description copied from class: ByteBuf
    
    Returns the readerIndex of this buffer.
    
    Specified by:
    
    readerIndex in class ByteBuf
  - readerIndex
```
public ByteBuf readerIndex(int readerIndex)
```
    Description copied from class: ByteBuf
    
    Sets the readerIndex of this buffer.
    
    Specified by:
    
    readerIndex in class ByteBuf
  - writerIndex
```
public int writerIndex()
```
    Description copied from class: ByteBuf
    
    Returns the writerIndex of this buffer.
    
    Specified by:
    
    writerIndex in class ByteBuf
  - writerIndex
```
public ByteBuf writerIndex(int writerIndex)
```
    Description copied from class: ByteBuf
    
    Sets the writerIndex of this buffer.
    
    Specified by:
    
    writerIndex in class ByteBuf
  - setIndex
```
public ByteBuf setIndex(int readerIndex,
               int writerIndex)
```
    Description copied from class: ByteBuf
    Sets the readerIndex and writerIndex of this buffer in one shot. This method is useful when you have to worry about the invocation order of ByteBuf.readerIndex(int) and ByteBuf.writerIndex(int) methods. For example, the following code will fail:
```
 // Create a buffer whose readerIndex, writerIndex and capacity are
 // 0, 0 and 8 respectively.
 ByteBuf buf = Unpooled.buffer(8);

 // IndexOutOfBoundsException is thrown because the specified
 // readerIndex (2) cannot be greater than the current writerIndex (0).
 buf.readerIndex(2);
 buf.writerIndex(4);
 
```
    The following code will also fail:
```
 // Create a buffer whose readerIndex, writerIndex and capacity are
 // 0, 8 and 8 respectively.
 ByteBuf buf = Unpooled.wrappedBuffer(new byte[8]);

 // readerIndex becomes 8.
 buf.readLong();

 // IndexOutOfBoundsException is thrown because the specified
 // writerIndex (4) cannot be less than the current readerIndex (8).
 buf.writerIndex(4);
 buf.readerIndex(2);
 
```
    By contrast, this method guarantees that it never throws an IndexOutOfBoundsException as long as the specified indexes meet basic constraints, regardless what the current index values of the buffer are:
```
 // No matter what the current state of the buffer is, the following
 // call always succeeds as long as the capacity of the buffer is not
 // less than 4.
 buf.setIndex(2, 4);
 
```
    Specified by:
    
    setIndex in class ByteBuf
  - clear
```
public ByteBuf clear()
```
    Description copied from class: ByteBuf
    
    Sets the readerIndex and writerIndex of this buffer to 0. This method is identical to setIndex(0, 0).
    Please note that the behavior of this method is different from that of NIO buffer, which sets the limit to the capacity of the buffer.
    
    Specified by:
    
    clear in class ByteBuf
  - isReadable
```
public boolean isReadable()
```
    Description copied from class: ByteBuf
    
    Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0.
    
    Specified by:
    
    isReadable in class ByteBuf
  - isReadable
```
public boolean isReadable(int numBytes)
```
    Description copied from class: ByteBuf
    
    Returns true if and only if this buffer contains equal to or more than the specified number of elements.
    
    Specified by:
    
    isReadable in class ByteBuf
  - isWritable
```
public boolean isWritable()
```
    Description copied from class: ByteBuf
    
    Returns true if and only if (this.capacity - this.writerIndex) is greater than 0.
    
    Specified by:
    
    isWritable in class ByteBuf
  - isWritable
```
public boolean isWritable(int numBytes)
```
    Description copied from class: ByteBuf
    
    Returns true if and only if this buffer has enough room to allow writing the specified number of elements.
    
    Specified by:
    
    isWritable in class ByteBuf
  - readableBytes
```
public int readableBytes()
```
    Description copied from class: ByteBuf
    
    Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex).
    
    Specified by:
    
    readableBytes in class ByteBuf
  - writableBytes
```
public int writableBytes()
```
    Description copied from class: ByteBuf
    
    Returns the number of writable bytes which is equal to (this.capacity - this.writerIndex).
    
    Specified by:
    
    writableBytes in class ByteBuf
  - maxWritableBytes
```
public int maxWritableBytes()
```
    Description copied from class: ByteBuf
    
    Returns the maximum possible number of writable bytes, which is equal to (this.maxCapacity - this.writerIndex).
    
    Specified by:
    
    maxWritableBytes in class ByteBuf
  - markReaderIndex
```
public ByteBuf markReaderIndex()
```
    Description copied from class: ByteBuf
    
    Marks the current readerIndex in this buffer. You can reposition the current readerIndex to the marked readerIndex by calling ByteBuf.resetReaderIndex(). The initial value of the marked readerIndex is 0.
    
    Specified by:
    
    markReaderIndex in class ByteBuf
  - resetReaderIndex
```
public ByteBuf resetReaderIndex()
```
    Description copied from class: ByteBuf
    
    Repositions the current readerIndex to the marked readerIndex in this buffer.
    
    Specified by:
    
    resetReaderIndex in class ByteBuf
  - markWriterIndex
```
public ByteBuf markWriterIndex()
```
    Description copied from class: ByteBuf
    
    Marks the current writerIndex in this buffer. You can reposition the current writerIndex to the marked writerIndex by calling ByteBuf.resetWriterIndex(). The initial value of the marked writerIndex is 0.
    
    Specified by:
    
    markWriterIndex in class ByteBuf
  - resetWriterIndex
```
public ByteBuf resetWriterIndex()
```
    Description copied from class: ByteBuf
    
    Repositions the current writerIndex to the marked writerIndex in this buffer.
    
    Specified by:
    
    resetWriterIndex in class ByteBuf
  - discardReadBytes
```
public ByteBuf discardReadBytes()
```
    Description copied from class: ByteBuf
    
    Discards the bytes between the 0th index and readerIndex. It moves the bytes between readerIndex and writerIndex to the 0th index, and sets readerIndex and writerIndex to 0 and oldWriterIndex - oldReaderIndex respectively.
    Please refer to the class documentation for more detailed explanation.
    
    Specified by:
    
    discardReadBytes in class ByteBuf
  - discardSomeReadBytes
```
public ByteBuf discardSomeReadBytes()
```
    Description copied from class: ByteBuf
    
    Similar to ByteBuf.discardReadBytes() except that this method might discard some, all, or none of read bytes depending on its internal implementation to reduce overall memory bandwidth consumption at the cost of potentially additional memory consumption.
    
    Specified by:
    
    discardSomeReadBytes in class ByteBuf
  - adjustMarkers
```
protected final void adjustMarkers(int decrement)
```
  - ensureWritable
```
public ByteBuf ensureWritable(int minWritableBytes)
```
    Description copied from class: ByteBuf
    
    Makes sure the number of the writable bytes is equal to or greater than the specified value. If there is enough writable bytes in this buffer, this method returns with no side effect. Otherwise, it raises an IllegalArgumentException.
    
    Specified by:
    
    ensureWritable in class ByteBuf
    
    Parameters:
    minWritableBytes - the expected minimum number of writable bytes
  - ensureWritable
```
public int ensureWritable(int minWritableBytes,
                 boolean force)
```
    Description copied from class: ByteBuf
    
    Tries to make sure the number of the writable bytes is equal to or greater than the specified value. Unlike ByteBuf.ensureWritable(int), this method does not raise an exception but returns a code.
    Specified by:
    
    ensureWritable in class ByteBuf
    
    Parameters:
    minWritableBytes - the expected minimum number of writable bytes
    force - When ByteBuf.writerIndex() + minWritableBytes > ByteBuf.maxCapacity():
    
    true - the capacity of the buffer is expanded to ByteBuf.maxCapacity()
    
    false - the capacity of the buffer is unchanged
    Returns:
    0 if the buffer has enough writable bytes, and its capacity is unchanged. 1 if the buffer does not have enough bytes, and its capacity is unchanged. 2 if the buffer has enough writable bytes, and its capacity has been increased. 3 if the buffer does not have enough bytes, but its capacity has been increased to its maximum.
  - order
```
public ByteBuf order(ByteOrder endianness)
```
    Description copied from class: ByteBuf
    
    Returns a buffer with the specified endianness which shares the whole region, indexes, and marks of this buffer. Modifying the content, the indexes, or the marks of the returned buffer or this buffer affects each other's content, indexes, and marks. If the specified endianness is identical to this buffer's byte order, this method can return this. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    order in class ByteBuf
  - newSwappedByteBuf
```
protected SwappedByteBuf newSwappedByteBuf()
```
    Creates a new SwappedByteBuf for this ByteBuf instance.
  - getByte
```
public byte getByte(int index)
```
    Description copied from class: ByteBuf
    
    Gets a byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getByte in class ByteBuf
  - _getByte
```
protected abstract byte _getByte(int index)
```
  - getBoolean
```
public boolean getBoolean(int index)
```
    Description copied from class: ByteBuf
    
    Gets a boolean at the specified absolute (@code index) in this buffer. This method does not modify the readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getBoolean in class ByteBuf
  - getUnsignedByte
```
public short getUnsignedByte(int index)
```
    Description copied from class: ByteBuf
    
    Gets an unsigned byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getUnsignedByte in class ByteBuf
  - getShort
```
public short getShort(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 16-bit short integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getShort in class ByteBuf
  - _getShort
```
protected abstract short _getShort(int index)
```
  - getUnsignedShort
```
public int getUnsignedShort(int index)
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 16-bit short integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getUnsignedShort in class ByteBuf
  - getUnsignedMedium
```
public int getUnsignedMedium(int index)
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 24-bit medium integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getUnsignedMedium in class ByteBuf
  - _getUnsignedMedium
```
protected abstract int _getUnsignedMedium(int index)
```
  - getMedium
```
public int getMedium(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 24-bit medium integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getMedium in class ByteBuf
  - getInt
```
public int getInt(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getInt in class ByteBuf
  - _getInt
```
protected abstract int _getInt(int index)
```
  - getUnsignedInt
```
public long getUnsignedInt(int index)
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getUnsignedInt in class ByteBuf
  - getLong
```
public long getLong(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 64-bit long integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getLong in class ByteBuf
  - _getLong
```
protected abstract long _getLong(int index)
```
  - getChar
```
public char getChar(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 2-byte UTF-16 character at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getChar in class ByteBuf
  - getFloat
```
public float getFloat(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 32-bit floating point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getFloat in class ByteBuf
  - getDouble
```
public double getDouble(int index)
```
    Description copied from class: ByteBuf
    
    Gets a 64-bit floating point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    getDouble in class ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               byte[] dst)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer
    
    Specified by:
    
    getBytes in class ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               ByteBuf dst)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the specified absolute index until the destination becomes non-writable. This method is basically same with ByteBuf.getBytes(int, ByteBuf, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ByteBuf.getBytes(int, ByteBuf, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).
    
    Specified by:
    
    getBytes in class ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               ByteBuf dst,
               int length)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the specified absolute index. This method is basically same with ByteBuf.getBytes(int, ByteBuf, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ByteBuf.getBytes(int, ByteBuf, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).
    
    Specified by:
    
    getBytes in class ByteBuf
    
    length - the number of bytes to transfer
  - setByte
```
public ByteBuf setByte(int index,
              int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified byte at the specified absolute index in this buffer. The 24 high-order bits of the specified value are ignored. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setByte in class ByteBuf
  - _setByte
```
protected abstract void _setByte(int index,
            int value)
```
  - setBoolean
```
public ByteBuf setBoolean(int index,
                 boolean value)
```
    Description copied from class: ByteBuf
    
    Sets the specified boolean at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setBoolean in class ByteBuf
  - setShort
```
public ByteBuf setShort(int index,
               int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 16-bit short integer at the specified absolute index in this buffer. The 16 high-order bits of the specified value are ignored. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setShort in class ByteBuf
  - _setShort
```
protected abstract void _setShort(int index,
             int value)
```
  - setChar
```
public ByteBuf setChar(int index,
              int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 2-byte UTF-16 character at the specified absolute index in this buffer. The 16 high-order bits of the specified value are ignored. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setChar in class ByteBuf
  - setMedium
```
public ByteBuf setMedium(int index,
                int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 24-bit medium integer at the specified absolute index in this buffer. Please note that the most significant byte is ignored in the specified value. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setMedium in class ByteBuf
  - _setMedium
```
protected abstract void _setMedium(int index,
              int value)
```
  - setInt
```
public ByteBuf setInt(int index,
             int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setInt in class ByteBuf
  - _setInt
```
protected abstract void _setInt(int index,
           int value)
```
  - setFloat
```
public ByteBuf setFloat(int index,
               float value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 32-bit floating-point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setFloat in class ByteBuf
  - setLong
```
public ByteBuf setLong(int index,
              long value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 64-bit long integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setLong in class ByteBuf
  - _setLong
```
protected abstract void _setLong(int index,
            long value)
```
  - setDouble
```
public ByteBuf setDouble(int index,
                double value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 64-bit floating-point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setDouble in class ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               byte[] src)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source array's data to this buffer starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setBytes in class ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               ByteBuf src)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the specified absolute index until the source buffer becomes unreadable. This method is basically same with ByteBuf.setBytes(int, ByteBuf, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ByteBuf.setBytes(int, ByteBuf, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).
    
    Specified by:
    
    setBytes in class ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               ByteBuf src,
               int length)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the specified absolute index. This method is basically same with ByteBuf.setBytes(int, ByteBuf, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ByteBuf.setBytes(int, ByteBuf, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).
    
    Specified by:
    
    setBytes in class ByteBuf
    
    length - the number of bytes to transfer
  - setZero
```
public ByteBuf setZero(int index,
              int length)
```
    Description copied from class: ByteBuf
    
    Fills this buffer with NUL (0x00) starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    setZero in class ByteBuf
    
    length - the number of NULs to write to the buffer
  - readByte
```
public byte readByte()
```
    Description copied from class: ByteBuf
    
    Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    Specified by:
    
    readByte in class ByteBuf
  - readBoolean
```
public boolean readBoolean()
```
    Description copied from class: ByteBuf
    
    Gets a boolean at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    Specified by:
    
    readBoolean in class ByteBuf
  - readUnsignedByte
```
public short readUnsignedByte()
```
    Description copied from class: ByteBuf
    
    Gets an unsigned byte at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    Specified by:
    
    readUnsignedByte in class ByteBuf
  - readShort
```
public short readShort()
```
    Description copied from class: ByteBuf
    
    Gets a 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    Specified by:
    
    readShort in class ByteBuf
  - readUnsignedShort
```
public int readUnsignedShort()
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    Specified by:
    
    readUnsignedShort in class ByteBuf
  - readMedium
```
public int readMedium()
```
    Description copied from class: ByteBuf
    
    Gets a 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.
    
    Specified by:
    
    readMedium in class ByteBuf
  - readUnsignedMedium
```
public int readUnsignedMedium()
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.
    
    Specified by:
    
    readUnsignedMedium in class ByteBuf
  - readInt
```
public int readInt()
```
    Description copied from class: ByteBuf
    
    Gets a 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    Specified by:
    
    readInt in class ByteBuf
  - readUnsignedInt
```
public long readUnsignedInt()
```
    Description copied from class: ByteBuf
    
    Gets an unsigned 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    Specified by:
    
    readUnsignedInt in class ByteBuf
  - readLong
```
public long readLong()
```
    Description copied from class: ByteBuf
    
    Gets a 64-bit integer at the current readerIndex and increases the readerIndex by 8 in this buffer.
    
    Specified by:
    
    readLong in class ByteBuf
  - readChar
```
public char readChar()
```
    Description copied from class: ByteBuf
    
    Gets a 2-byte UTF-16 character at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    Specified by:
    
    readChar in class ByteBuf
  - readFloat
```
public float readFloat()
```
    Description copied from class: ByteBuf
    
    Gets a 32-bit floating point number at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    Specified by:
    
    readFloat in class ByteBuf
  - readDouble
```
public double readDouble()
```
    Description copied from class: ByteBuf
    
    Gets a 64-bit floating point number at the current readerIndex and increases the readerIndex by 8 in this buffer.
    
    Specified by:
    
    readDouble in class ByteBuf
  - readBytes
```
public ByteBuf readBytes(int length)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to a newly created buffer starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length). The returned buffer's readerIndex and writerIndex are 0 and length respectively.
    
    Specified by:
    
    readBytes in class ByteBuf
    
    Parameters:
    length - the number of bytes to transfer
    
    Returns:
    the newly created buffer which contains the transferred bytes
  - readSlice
```
public ByteBuf readSlice(int length)
```
    Description copied from class: ByteBuf
    
    Returns a new slice of this buffer's sub-region starting at the current readerIndex and increases the readerIndex by the size of the new slice (= length).
    
    Specified by:
    
    readSlice in class ByteBuf
    
    Parameters:
    length - the size of the new slice
    
    Returns:
    the newly created slice
  - readBytes
```
public ByteBuf readBytes(byte[] dst,
                int dstIndex,
                int length)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length).
    
    Specified by:
    
    readBytes in class ByteBuf
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - readBytes
```
public ByteBuf readBytes(byte[] dst)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= dst.length).
    
    Specified by:
    
    readBytes in class ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex until the destination becomes non-writable, and increases the readerIndex by the number of the transferred bytes. This method is basically same with ByteBuf.readBytes(ByteBuf, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ByteBuf.readBytes(ByteBuf, int, int) does not.
    
    Specified by:
    
    readBytes in class ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst,
                int length)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length). This method is basically same with ByteBuf.readBytes(ByteBuf, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes (= length) while ByteBuf.readBytes(ByteBuf, int, int) does not.
    
    Specified by:
    
    readBytes in class ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst,
                int dstIndex,
                int length)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length).
    
    Specified by:
    
    readBytes in class ByteBuf
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - readBytes
```
public ByteBuf readBytes(ByteBuffer dst)
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified destination starting at the current readerIndex until the destination's position reaches its limit, and increases the readerIndex by the number of the transferred bytes.
    
    Specified by:
    
    readBytes in class ByteBuf
  - readBytes
```
public int readBytes(GatheringByteChannel out,
            int length)
              throws IOException
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified stream starting at the current readerIndex.
    
    Specified by:
    
    readBytes in class ByteBuf
    
    length - the maximum number of bytes to transfer
    
    Returns:
    the actual number of bytes written out to the specified channel
    
    Throws:
    
    IOException - if the specified channel threw an exception during I/O
  - readBytes
```
public ByteBuf readBytes(OutputStream out,
                int length)
                  throws IOException
```
    Description copied from class: ByteBuf
    
    Transfers this buffer's data to the specified stream starting at the current readerIndex.
    
    Specified by:
    
    readBytes in class ByteBuf
    
    length - the number of bytes to transfer
    
    Throws:
    
    IOException - if the specified stream threw an exception during I/O
  - skipBytes
```
public ByteBuf skipBytes(int length)
```
    Description copied from class: ByteBuf
    
    Increases the current readerIndex by the specified length in this buffer.
    
    Specified by:
    
    skipBytes in class ByteBuf
  - writeBoolean
```
public ByteBuf writeBoolean(boolean value)
```
    Description copied from class: ByteBuf
    
    Sets the specified boolean at the current writerIndex and increases the writerIndex by 1 in this buffer.
    
    Specified by:
    
    writeBoolean in class ByteBuf
  - writeByte
```
public ByteBuf writeByte(int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified byte at the current writerIndex and increases the writerIndex by 1 in this buffer. The 24 high-order bits of the specified value are ignored.
    
    Specified by:
    
    writeByte in class ByteBuf
  - writeShort
```
public ByteBuf writeShort(int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 16-bit short integer at the current writerIndex and increases the writerIndex by 2 in this buffer. The 16 high-order bits of the specified value are ignored.
    
    Specified by:
    
    writeShort in class ByteBuf
  - writeMedium
```
public ByteBuf writeMedium(int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 24-bit medium integer at the current writerIndex and increases the writerIndex by 3 in this buffer.
    
    Specified by:
    
    writeMedium in class ByteBuf
  - writeInt
```
public ByteBuf writeInt(int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 32-bit integer at the current writerIndex and increases the writerIndex by 4 in this buffer.
    
    Specified by:
    
    writeInt in class ByteBuf
  - writeLong
```
public ByteBuf writeLong(long value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 64-bit long integer at the current writerIndex and increases the writerIndex by 8 in this buffer.
    
    Specified by:
    
    writeLong in class ByteBuf
  - writeChar
```
public ByteBuf writeChar(int value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 2-byte UTF-16 character at the current writerIndex and increases the writerIndex by 2 in this buffer. The 16 high-order bits of the specified value are ignored.
    
    Specified by:
    
    writeChar in class ByteBuf
  - writeFloat
```
public ByteBuf writeFloat(float value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 32-bit floating point number at the current writerIndex and increases the writerIndex by 4 in this buffer.
    
    Specified by:
    
    writeFloat in class ByteBuf
  - writeDouble
```
public ByteBuf writeDouble(double value)
```
    Description copied from class: ByteBuf
    
    Sets the specified 64-bit floating point number at the current writerIndex and increases the writerIndex by 8 in this buffer.
    
    Specified by:
    
    writeDouble in class ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(byte[] src,
                 int srcIndex,
                 int length)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source array's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length).
    
    Specified by:
    
    writeBytes in class ByteBuf
    
    srcIndex - the first index of the source
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(byte[] src)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source array's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= src.length).
    
    Specified by:
    
    writeBytes in class ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the current writerIndex until the source buffer becomes unreadable, and increases the writerIndex by the number of the transferred bytes. This method is basically same with ByteBuf.writeBytes(ByteBuf, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ByteBuf.writeBytes(ByteBuf, int, int) does not.
    
    Specified by:
    
    writeBytes in class ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src,
                 int length)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length). This method is basically same with ByteBuf.writeBytes(ByteBuf, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes (= length) while ByteBuf.writeBytes(ByteBuf, int, int) does not.
    
    Specified by:
    
    writeBytes in class ByteBuf
    
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src,
                 int srcIndex,
                 int length)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length).
    
    Specified by:
    
    writeBytes in class ByteBuf
    
    srcIndex - the first index of the source
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(ByteBuffer src)
```
    Description copied from class: ByteBuf
    
    Transfers the specified source buffer's data to this buffer starting at the current writerIndex until the source buffer's position reaches its limit, and increases the writerIndex by the number of the transferred bytes.
    
    Specified by:
    
    writeBytes in class ByteBuf
  - writeBytes
```
public int writeBytes(InputStream in,
             int length)
               throws IOException
```
    Description copied from class: ByteBuf
    
    Transfers the content of the specified stream to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes.
    
    Specified by:
    
    writeBytes in class ByteBuf
    
    length - the number of bytes to transfer
    
    Returns:
    the actual number of bytes read in from the specified stream
    
    Throws:
    
    IOException - if the specified stream threw an exception during I/O
  - writeBytes
```
public int writeBytes(ScatteringByteChannel in,
             int length)
               throws IOException
```
    Description copied from class: ByteBuf
    
    Transfers the content of the specified channel to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes.
    
    Specified by:
    
    writeBytes in class ByteBuf
    
    length - the maximum number of bytes to transfer
    
    Returns:
    the actual number of bytes read in from the specified channel
    
    Throws:
    
    IOException - if the specified channel threw an exception during I/O
  - writeZero
```
public ByteBuf writeZero(int length)
```
    Description copied from class: ByteBuf
    
    Fills this buffer with NUL (0x00) starting at the current writerIndex and increases the writerIndex by the specified length.
    
    Specified by:
    
    writeZero in class ByteBuf
    
    Parameters:
    length - the number of NULs to write to the buffer
  - copy
```
public ByteBuf copy()
```
    Description copied from class: ByteBuf
    
    Returns a copy of this buffer's readable bytes. Modifying the content of the returned buffer or this buffer does not affect each other at all. This method is identical to buf.copy(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    copy in class ByteBuf
  - duplicate
```
public ByteBuf duplicate()
```
    Description copied from class: ByteBuf
    
    Returns a buffer which shares the whole region of this buffer. Modifying the content of the returned buffer or this buffer affects each other's content while they maintain separate indexes and marks. This method is identical to buf.slice(0, buf.capacity()). This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    duplicate in class ByteBuf
  - slice
```
public ByteBuf slice()
```
    Description copied from class: ByteBuf
    
    Returns a slice of this buffer's readable bytes. Modifying the content of the returned buffer or this buffer affects each other's content while they maintain separate indexes and marks. This method is identical to buf.slice(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    slice in class ByteBuf
  - slice
```
public ByteBuf slice(int index,
            int length)
```
    Description copied from class: ByteBuf
    
    Returns a slice of this buffer's sub-region. Modifying the content of the returned buffer or this buffer affects each other's content while they maintain separate indexes and marks. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    slice in class ByteBuf
  - nioBuffer
```
public ByteBuffer nioBuffer()
```
    Description copied from class: ByteBuf
    
    Exposes this buffer's readable bytes as an NIO ByteBuffer. The returned buffer shares the content with this buffer, while changing the position and limit of the returned NIO buffer does not affect the indexes and marks of this buffer. This method is identical to buf.nioBuffer(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer. Please note that the returned NIO buffer will not see the changes of this buffer if this buffer is a dynamic buffer and it adjusted its capacity.
    
    Specified by:
    
    nioBuffer in class ByteBuf
    
    See Also:
    ByteBuf.nioBufferCount(), ByteBuf.nioBuffers(), ByteBuf.nioBuffers(int, int)
  - nioBuffers
```
public ByteBuffer[] nioBuffers()
```
    Description copied from class: ByteBuf
    
    Exposes this buffer's readable bytes as an NIO ByteBuffer's. The returned buffer shares the content with this buffer, while changing the position and limit of the returned NIO buffer does not affect the indexes and marks of this buffer. This method does not modify readerIndex or writerIndex of this buffer. Please note that the returned NIO buffer will not see the changes of this buffer if this buffer is a dynamic buffer and it adjusted its capacity.
    
    Specified by:
    
    nioBuffers in class ByteBuf
    
    See Also:
    ByteBuf.nioBufferCount(), ByteBuf.nioBuffer(), ByteBuf.nioBuffer(int, int)
  - toString
```
public String toString(Charset charset)
```
    Description copied from class: ByteBuf
    
    Decodes this buffer's readable bytes into a string with the specified character set name. This method is identical to buf.toString(buf.readerIndex(), buf.readableBytes(), charsetName). This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    toString in class ByteBuf
  - toString
```
public String toString(int index,
              int length,
              Charset charset)
```
    Description copied from class: ByteBuf
    
    Decodes this buffer's sub-region into a string with the specified character set. This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    toString in class ByteBuf
  - indexOf
```
public int indexOf(int fromIndex,
          int toIndex,
          byte value)
```
    Description copied from class: ByteBuf
    
    Locates the first occurrence of the specified value in this buffer. The search takes place from the specified fromIndex (inclusive) to the specified toIndex (exclusive).
    If fromIndex is greater than toIndex, the search is performed in a reversed order.
    This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    indexOf in class ByteBuf
    
    Returns:
    the absolute index of the first occurrence if found. -1 otherwise.
  - bytesBefore
```
public int bytesBefore(byte value)
```
    Description copied from class: ByteBuf
    
    Locates the first occurrence of the specified value in this buffer. The search takes place from the current readerIndex (inclusive) to the current writerIndex (exclusive).
    This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    bytesBefore in class ByteBuf
    
    Returns:
    the number of bytes between the current readerIndex and the first occurrence if found. -1 otherwise.
  - bytesBefore
```
public int bytesBefore(int length,
              byte value)
```
    Description copied from class: ByteBuf
    
    Locates the first occurrence of the specified value in this buffer. The search starts from the current readerIndex (inclusive) and lasts for the specified length.
    This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    bytesBefore in class ByteBuf
    
    Returns:
    the number of bytes between the current readerIndex and the first occurrence if found. -1 otherwise.
  - bytesBefore
```
public int bytesBefore(int index,
              int length,
              byte value)
```
    Description copied from class: ByteBuf
    
    Locates the first occurrence of the specified value in this buffer. The search starts from the specified index (inclusive) and lasts for the specified length.
    This method does not modify readerIndex or writerIndex of this buffer.
    
    Specified by:
    
    bytesBefore in class ByteBuf
    
    Returns:
    the number of bytes between the specified index and the first occurrence if found. -1 otherwise.
  - forEachByte
```
public int forEachByte(ByteBufProcessor processor)
```
    Description copied from class: ByteBuf
    
    Iterates over the readable bytes of this buffer with the specified processor in ascending order.
    
    Specified by:
    
    forEachByte in class ByteBuf
    
    Returns:
    -1 if the processor iterated to or beyond the end of the readable bytes. The last-visited index If the ByteBufProcessor.process(byte) returned false.
  - forEachByte
```
public int forEachByte(int index,
              int length,
              ByteBufProcessor processor)
```
    Description copied from class: ByteBuf
    
    Iterates over the specified area of this buffer with the specified processor in ascending order. (i.e. index, (index + 1), .. (index + length - 1))
    
    Specified by:
    
    forEachByte in class ByteBuf
    
    Returns:
    -1 if the processor iterated to or beyond the end of the specified area. The last-visited index If the ByteBufProcessor.process(byte) returned false.
  - forEachByteDesc
```
public int forEachByteDesc(ByteBufProcessor processor)
```
    Description copied from class: ByteBuf
    
    Iterates over the readable bytes of this buffer with the specified processor in descending order.
    
    Specified by:
    
    forEachByteDesc in class ByteBuf
    
    Returns:
    -1 if the processor iterated to or beyond the beginning of the readable bytes. The last-visited index If the ByteBufProcessor.process(byte) returned false.
  - forEachByteDesc
```
public int forEachByteDesc(int index,
                  int length,
                  ByteBufProcessor processor)
```
    Description copied from class: ByteBuf
    
    Iterates over the specified area of this buffer with the specified processor in descending order. (i.e. (index + length - 1), (index + length - 2), ... index)
    
    Specified by:
    
    forEachByteDesc in class ByteBuf
    
    Returns:
    -1 if the processor iterated to or beyond the beginning of the specified area. The last-visited index If the ByteBufProcessor.process(byte) returned false.
  - hashCode
```
public int hashCode()
```
    Description copied from class: ByteBuf
    
    Returns a hash code which was calculated from the content of this buffer. If there's a byte array which is equal to this array, both arrays should return the same value.
    
    Specified by:
    
    hashCode in class ByteBuf
  - equals
```
public boolean equals(Object o)
```
    Description copied from class: ByteBuf
    Determines if the content of the specified buffer is identical to the content of this array. 'Identical' here means:
    - the size of the contents of the two buffers are same and
    - every single byte of the content of the two buffers are same.
    Please note that it does not compare ByteBuf.readerIndex() nor ByteBuf.writerIndex(). This method also returns false for null and an object which is not an instance of ByteBuf type.
    Specified by:
    
    equals in class ByteBuf
  - compareTo
```
public int compareTo(ByteBuf that)
```
    Description copied from class: ByteBuf
    
    Compares the content of the specified buffer to the content of this buffer. Comparison is performed in the same manner with the string comparison functions of various languages such as strcmp, memcmp and String.compareTo(String).
    
    Specified by:
    
    compareTo in interface Comparable<ByteBuf>
    
    Specified by:
    
    compareTo in class ByteBuf
  - toString
```
public String toString()
```
    Description copied from class: ByteBuf
    
    Returns the string representation of this buffer. This method does not necessarily return the whole content of the buffer but returns the values of the key properties such as ByteBuf.readerIndex(), ByteBuf.writerIndex() and ByteBuf.capacity().
    
    Specified by:
    
    toString in class ByteBuf
  - checkIndex
```
protected final void checkIndex(int index)
```
  - checkIndex
```
protected final void checkIndex(int index,
              int fieldLength)
```
  - checkSrcIndex
```
protected final void checkSrcIndex(int index,
                 int length,
                 int srcIndex,
                 int srcCapacity)
```
  - checkDstIndex
```
protected final void checkDstIndex(int index,
                 int length,
                 int dstIndex,
                 int dstCapacity)
```
  - checkReadableBytes
```
protected final void checkReadableBytes(int minimumReadableBytes)
```
    Throws an IndexOutOfBoundsException if the current readable bytes of this buffer is less than the specified value.
  - ensureAccessible
```
protected final void ensureAccessible()
```
    Should be called by every method that tries to access the buffers content to check if the buffer was released before.

Class AbstractByteBuf

Constructor Summary

Method Summary

Methods inherited from class io.netty.buffer.ByteBuf

Methods inherited from class java.lang.Object

Methods inherited from interface io.netty.util.ReferenceCounted

Constructor Detail

AbstractByteBuf

Method Detail

maxCapacity

maxCapacity

readerIndex

readerIndex

writerIndex

writerIndex

setIndex

clear

isReadable

isReadable

isWritable

isWritable

readableBytes

writableBytes

maxWritableBytes

markReaderIndex

resetReaderIndex

markWriterIndex

resetWriterIndex

discardReadBytes

discardSomeReadBytes

adjustMarkers

ensureWritable

ensureWritable

order

newSwappedByteBuf

getByte

_getByte

getBoolean

getUnsignedByte

getShort

_getShort

getUnsignedShort

getUnsignedMedium

_getUnsignedMedium

getMedium

getInt

_getInt

getUnsignedInt

getLong

_getLong

getChar

getFloat

getDouble

getBytes

getBytes

getBytes

setByte

_setByte

setBoolean

setShort

_setShort

setChar

setMedium

_setMedium

setInt

_setInt

setFloat

setLong

_setLong

setDouble

setBytes

setBytes

setBytes

setZero

readByte

readBoolean

readUnsignedByte

readShort

readUnsignedShort

readMedium