AbstractByteBuf (Netty 4.0.56.Final API文档

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

所有已实现的接口:

ReferenceCounted, java.lang.Comparable<ByteBuf>

直接已知子类:

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

构造器概要

构造器
限定符构造器和说明

protected AbstractByteBuf(int maxCapacity)

构造器
限定符	构造器和说明
`protected`	`AbstractByteBuf(int maxCapacity)`

方法概要

方法
限定符和类型	方法和说明
`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`	`checkNewCapacity(int newCapacity)`
`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(java.lang.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.
`java.nio.ByteBuffer`	`nioBuffer()` Exposes this buffer's readable bytes as an NIO `ByteBuffer`.
`java.nio.ByteBuffer[]`	`nioBuffers()` Exposes this buffer's readable bytes as an NIO `ByteBuffer`'s.
`ByteBuf`	`order(java.nio.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(java.nio.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(java.nio.channels.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(java.io.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.
`java.lang.String`	`toString()` Returns the string representation of this buffer.
`java.lang.String`	`toString(java.nio.charset.Charset charset)` Decodes this buffer's readable bytes into a string with the specified character set name.
`java.lang.String`	`toString(int index, int length, java.nio.charset.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(java.nio.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(java.io.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(java.nio.channels.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`.

从类继承的方法 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, unwrap

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 io.netty.util.ReferenceCounted
refCnt, release, release

- 构造器详细资料
  - AbstractByteBuf
```
protected AbstractByteBuf(int maxCapacity)
```
- 方法详细资料
  - maxCapacity
```
public int maxCapacity()
```
    从类复制的说明: 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.
    
    指定者:
    
    maxCapacity 在类中 ByteBuf
  - maxCapacity
```
protected final void maxCapacity(int maxCapacity)
```
  - readerIndex
```
public int readerIndex()
```
    从类复制的说明: ByteBuf
    
    Returns the readerIndex of this buffer.
    
    指定者:
    
    readerIndex 在类中 ByteBuf
  - readerIndex
```
public ByteBuf readerIndex(int readerIndex)
```
    从类复制的说明: ByteBuf
    
    Sets the readerIndex of this buffer.
    
    指定者:
    
    readerIndex 在类中 ByteBuf
  - writerIndex
```
public int writerIndex()
```
    从类复制的说明: ByteBuf
    
    Returns the writerIndex of this buffer.
    
    指定者:
    
    writerIndex 在类中 ByteBuf
  - writerIndex
```
public ByteBuf writerIndex(int writerIndex)
```
    从类复制的说明: ByteBuf
    
    Sets the writerIndex of this buffer.
    
    指定者:
    
    writerIndex 在类中 ByteBuf
  - setIndex
```
public ByteBuf setIndex(int readerIndex,
               int writerIndex)
```
    从类复制的说明: 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);
 
```
    指定者:
    
    setIndex 在类中 ByteBuf
  - clear
```
public ByteBuf clear()
```
    从类复制的说明: 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.
    
    指定者:
    
    clear 在类中 ByteBuf
  - isReadable
```
public boolean isReadable()
```
    从类复制的说明: ByteBuf
    
    Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0.
    
    指定者:
    
    isReadable 在类中 ByteBuf
  - isReadable
```
public boolean isReadable(int numBytes)
```
    从类复制的说明: ByteBuf
    
    Returns true if and only if this buffer contains equal to or more than the specified number of elements.
    
    指定者:
    
    isReadable 在类中 ByteBuf
  - isWritable
```
public boolean isWritable()
```
    从类复制的说明: ByteBuf
    
    Returns true if and only if (this.capacity - this.writerIndex) is greater than 0.
    
    指定者:
    
    isWritable 在类中 ByteBuf
  - isWritable
```
public boolean isWritable(int numBytes)
```
    从类复制的说明: ByteBuf
    
    Returns true if and only if this buffer has enough room to allow writing the specified number of elements.
    
    指定者:
    
    isWritable 在类中 ByteBuf
  - readableBytes
```
public int readableBytes()
```
    从类复制的说明: ByteBuf
    
    Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex).
    
    指定者:
    
    readableBytes 在类中 ByteBuf
  - writableBytes
```
public int writableBytes()
```
    从类复制的说明: ByteBuf
    
    Returns the number of writable bytes which is equal to (this.capacity - this.writerIndex).
    
    指定者:
    
    writableBytes 在类中 ByteBuf
  - maxWritableBytes
```
public int maxWritableBytes()
```
    从类复制的说明: ByteBuf
    
    Returns the maximum possible number of writable bytes, which is equal to (this.maxCapacity - this.writerIndex).
    
    指定者:
    
    maxWritableBytes 在类中 ByteBuf
  - markReaderIndex
```
public ByteBuf markReaderIndex()
```
    从类复制的说明: 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.
    
    指定者:
    
    markReaderIndex 在类中 ByteBuf
  - resetReaderIndex
```
public ByteBuf resetReaderIndex()
```
    从类复制的说明: ByteBuf
    
    Repositions the current readerIndex to the marked readerIndex in this buffer.
    
    指定者:
    
    resetReaderIndex 在类中 ByteBuf
  - markWriterIndex
```
public ByteBuf markWriterIndex()
```
    从类复制的说明: 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.
    
    指定者:
    
    markWriterIndex 在类中 ByteBuf
  - resetWriterIndex
```
public ByteBuf resetWriterIndex()
```
    从类复制的说明: ByteBuf
    
    Repositions the current writerIndex to the marked writerIndex in this buffer.
    
    指定者:
    
    resetWriterIndex 在类中 ByteBuf
  - discardReadBytes
```
public ByteBuf discardReadBytes()
```
    从类复制的说明: 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.
    
    指定者:
    
    discardReadBytes 在类中 ByteBuf
  - discardSomeReadBytes
```
public ByteBuf discardSomeReadBytes()
```
    从类复制的说明: 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.
    
    指定者:
    
    discardSomeReadBytes 在类中 ByteBuf
  - adjustMarkers
```
protected final void adjustMarkers(int decrement)
```
  - ensureWritable
```
public ByteBuf ensureWritable(int minWritableBytes)
```
    从类复制的说明: 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.
    
    指定者:
    
    ensureWritable 在类中 ByteBuf
    
    参数:
    minWritableBytes - the expected minimum number of writable bytes
  - ensureWritable
```
public int ensureWritable(int minWritableBytes,
                 boolean force)
```
    从类复制的说明: 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.
    指定者:
    
    ensureWritable 在类中 ByteBuf
    
    参数:
    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
    返回:
    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(java.nio.ByteOrder endianness)
```
    从类复制的说明: 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.
    
    指定者:
    
    order 在类中 ByteBuf
  - newSwappedByteBuf
```
protected SwappedByteBuf newSwappedByteBuf()
```
    Creates a new SwappedByteBuf for this ByteBuf instance.
  - getByte
```
public byte getByte(int index)
```
    从类复制的说明: ByteBuf
    
    Gets a byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    指定者:
    
    getByte 在类中 ByteBuf
  - _getByte
```
protected abstract byte _getByte(int index)
```
  - getBoolean
```
public boolean getBoolean(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getBoolean 在类中 ByteBuf
  - getUnsignedByte
```
public short getUnsignedByte(int index)
```
    从类复制的说明: ByteBuf
    
    Gets an unsigned byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    指定者:
    
    getUnsignedByte 在类中 ByteBuf
  - getShort
```
public short getShort(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getShort 在类中 ByteBuf
  - _getShort
```
protected abstract short _getShort(int index)
```
  - getUnsignedShort
```
public int getUnsignedShort(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getUnsignedShort 在类中 ByteBuf
  - getUnsignedMedium
```
public int getUnsignedMedium(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getUnsignedMedium 在类中 ByteBuf
  - _getUnsignedMedium
```
protected abstract int _getUnsignedMedium(int index)
```
  - getMedium
```
public int getMedium(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getMedium 在类中 ByteBuf
  - getInt
```
public int getInt(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getInt 在类中 ByteBuf
  - _getInt
```
protected abstract int _getInt(int index)
```
  - getUnsignedInt
```
public long getUnsignedInt(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getUnsignedInt 在类中 ByteBuf
  - getLong
```
public long getLong(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getLong 在类中 ByteBuf
  - _getLong
```
protected abstract long _getLong(int index)
```
  - getChar
```
public char getChar(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getChar 在类中 ByteBuf
  - getFloat
```
public float getFloat(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getFloat 在类中 ByteBuf
  - getDouble
```
public double getDouble(int index)
```
    从类复制的说明: 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.
    
    指定者:
    
    getDouble 在类中 ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               byte[] dst)
```
    从类复制的说明: 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
    
    指定者:
    
    getBytes 在类中 ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               ByteBuf dst)
```
    从类复制的说明: 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).
    
    指定者:
    
    getBytes 在类中 ByteBuf
  - getBytes
```
public ByteBuf getBytes(int index,
               ByteBuf dst,
               int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    getBytes 在类中 ByteBuf
    
    length - the number of bytes to transfer
  - setByte
```
public ByteBuf setByte(int index,
              int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setByte 在类中 ByteBuf
  - _setByte
```
protected abstract void _setByte(int index,
            int value)
```
  - setBoolean
```
public ByteBuf setBoolean(int index,
                 boolean value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified boolean at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
    
    指定者:
    
    setBoolean 在类中 ByteBuf
  - setShort
```
public ByteBuf setShort(int index,
               int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setShort 在类中 ByteBuf
  - _setShort
```
protected abstract void _setShort(int index,
             int value)
```
  - setChar
```
public ByteBuf setChar(int index,
              int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setChar 在类中 ByteBuf
  - setMedium
```
public ByteBuf setMedium(int index,
                int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setMedium 在类中 ByteBuf
  - _setMedium
```
protected abstract void _setMedium(int index,
              int value)
```
  - setInt
```
public ByteBuf setInt(int index,
             int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setInt 在类中 ByteBuf
  - _setInt
```
protected abstract void _setInt(int index,
           int value)
```
  - setFloat
```
public ByteBuf setFloat(int index,
               float value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setFloat 在类中 ByteBuf
  - setLong
```
public ByteBuf setLong(int index,
              long value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setLong 在类中 ByteBuf
  - _setLong
```
protected abstract void _setLong(int index,
            long value)
```
  - setDouble
```
public ByteBuf setDouble(int index,
                double value)
```
    从类复制的说明: 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.
    
    指定者:
    
    setDouble 在类中 ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               byte[] src)
```
    从类复制的说明: 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.
    
    指定者:
    
    setBytes 在类中 ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               ByteBuf src)
```
    从类复制的说明: 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).
    
    指定者:
    
    setBytes 在类中 ByteBuf
  - setBytes
```
public ByteBuf setBytes(int index,
               ByteBuf src,
               int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    setBytes 在类中 ByteBuf
    
    length - the number of bytes to transfer
  - setZero
```
public ByteBuf setZero(int index,
              int length)
```
    从类复制的说明: ByteBuf
    
    Fills this buffer with NUL (0x00) starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    指定者:
    
    setZero 在类中 ByteBuf
    
    length - the number of NULs to write to the buffer
  - readByte
```
public byte readByte()
```
    从类复制的说明: ByteBuf
    
    Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    指定者:
    
    readByte 在类中 ByteBuf
  - readBoolean
```
public boolean readBoolean()
```
    从类复制的说明: ByteBuf
    
    Gets a boolean at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    指定者:
    
    readBoolean 在类中 ByteBuf
  - readUnsignedByte
```
public short readUnsignedByte()
```
    从类复制的说明: ByteBuf
    
    Gets an unsigned byte at the current readerIndex and increases the readerIndex by 1 in this buffer.
    
    指定者:
    
    readUnsignedByte 在类中 ByteBuf
  - readShort
```
public short readShort()
```
    从类复制的说明: ByteBuf
    
    Gets a 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    指定者:
    
    readShort 在类中 ByteBuf
  - readUnsignedShort
```
public int readUnsignedShort()
```
    从类复制的说明: ByteBuf
    
    Gets an unsigned 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    指定者:
    
    readUnsignedShort 在类中 ByteBuf
  - readMedium
```
public int readMedium()
```
    从类复制的说明: ByteBuf
    
    Gets a 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.
    
    指定者:
    
    readMedium 在类中 ByteBuf
  - readUnsignedMedium
```
public int readUnsignedMedium()
```
    从类复制的说明: ByteBuf
    
    Gets an unsigned 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.
    
    指定者:
    
    readUnsignedMedium 在类中 ByteBuf
  - readInt
```
public int readInt()
```
    从类复制的说明: ByteBuf
    
    Gets a 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    指定者:
    
    readInt 在类中 ByteBuf
  - readUnsignedInt
```
public long readUnsignedInt()
```
    从类复制的说明: ByteBuf
    
    Gets an unsigned 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    指定者:
    
    readUnsignedInt 在类中 ByteBuf
  - readLong
```
public long readLong()
```
    从类复制的说明: ByteBuf
    
    Gets a 64-bit integer at the current readerIndex and increases the readerIndex by 8 in this buffer.
    
    指定者:
    
    readLong 在类中 ByteBuf
  - readChar
```
public char readChar()
```
    从类复制的说明: ByteBuf
    
    Gets a 2-byte UTF-16 character at the current readerIndex and increases the readerIndex by 2 in this buffer.
    
    指定者:
    
    readChar 在类中 ByteBuf
  - readFloat
```
public float readFloat()
```
    从类复制的说明: ByteBuf
    
    Gets a 32-bit floating point number at the current readerIndex and increases the readerIndex by 4 in this buffer.
    
    指定者:
    
    readFloat 在类中 ByteBuf
  - readDouble
```
public double readDouble()
```
    从类复制的说明: ByteBuf
    
    Gets a 64-bit floating point number at the current readerIndex and increases the readerIndex by 8 in this buffer.
    
    指定者:
    
    readDouble 在类中 ByteBuf
  - readBytes
```
public ByteBuf readBytes(int length)
```
    从类复制的说明: 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.
    
    指定者:
    
    readBytes 在类中 ByteBuf
    
    参数:
    length - the number of bytes to transfer
    
    返回:
    the newly created buffer which contains the transferred bytes
  - readSlice
```
public ByteBuf readSlice(int length)
```
    从类复制的说明: 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).
    Also be aware that this method will NOT call ByteBuf.retain() and so the reference count will NOT be increased.
    
    指定者:
    
    readSlice 在类中 ByteBuf
    
    参数:
    length - the size of the new slice
    
    返回:
    the newly created slice
  - readBytes
```
public ByteBuf readBytes(byte[] dst,
                int dstIndex,
                int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    readBytes 在类中 ByteBuf
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - readBytes
```
public ByteBuf readBytes(byte[] dst)
```
    从类复制的说明: 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).
    
    指定者:
    
    readBytes 在类中 ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst)
```
    从类复制的说明: 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.
    
    指定者:
    
    readBytes 在类中 ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst,
                int length)
```
    从类复制的说明: 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.
    
    指定者:
    
    readBytes 在类中 ByteBuf
  - readBytes
```
public ByteBuf readBytes(ByteBuf dst,
                int dstIndex,
                int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    readBytes 在类中 ByteBuf
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - readBytes
```
public ByteBuf readBytes(java.nio.ByteBuffer dst)
```
    从类复制的说明: 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.
    
    指定者:
    
    readBytes 在类中 ByteBuf
  - readBytes
```
public int readBytes(java.nio.channels.GatheringByteChannel out,
            int length)
              throws java.io.IOException
```
    从类复制的说明: ByteBuf
    
    Transfers this buffer's data to the specified stream starting at the current readerIndex.
    
    指定者:
    
    readBytes 在类中 ByteBuf
    
    length - the maximum number of bytes to transfer
    
    返回:
    the actual number of bytes written out to the specified channel
    
    抛出:
    
    java.io.IOException - if the specified channel threw an exception during I/O
  - readBytes
```
public ByteBuf readBytes(java.io.OutputStream out,
                int length)
                  throws java.io.IOException
```
    从类复制的说明: ByteBuf
    
    Transfers this buffer's data to the specified stream starting at the current readerIndex.
    
    指定者:
    
    readBytes 在类中 ByteBuf
    
    length - the number of bytes to transfer
    
    抛出:
    
    java.io.IOException - if the specified stream threw an exception during I/O
  - skipBytes
```
public ByteBuf skipBytes(int length)
```
    从类复制的说明: ByteBuf
    
    Increases the current readerIndex by the specified length in this buffer.
    
    指定者:
    
    skipBytes 在类中 ByteBuf
  - writeBoolean
```
public ByteBuf writeBoolean(boolean value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified boolean at the current writerIndex and increases the writerIndex by 1 in this buffer.
    
    指定者:
    
    writeBoolean 在类中 ByteBuf
  - writeByte
```
public ByteBuf writeByte(int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeByte 在类中 ByteBuf
  - writeShort
```
public ByteBuf writeShort(int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeShort 在类中 ByteBuf
  - writeMedium
```
public ByteBuf writeMedium(int value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified 24-bit medium integer at the current writerIndex and increases the writerIndex by 3 in this buffer.
    
    指定者:
    
    writeMedium 在类中 ByteBuf
  - writeInt
```
public ByteBuf writeInt(int value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified 32-bit integer at the current writerIndex and increases the writerIndex by 4 in this buffer.
    
    指定者:
    
    writeInt 在类中 ByteBuf
  - writeLong
```
public ByteBuf writeLong(long value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified 64-bit long integer at the current writerIndex and increases the writerIndex by 8 in this buffer.
    
    指定者:
    
    writeLong 在类中 ByteBuf
  - writeChar
```
public ByteBuf writeChar(int value)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeChar 在类中 ByteBuf
  - writeFloat
```
public ByteBuf writeFloat(float value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified 32-bit floating point number at the current writerIndex and increases the writerIndex by 4 in this buffer.
    
    指定者:
    
    writeFloat 在类中 ByteBuf
  - writeDouble
```
public ByteBuf writeDouble(double value)
```
    从类复制的说明: ByteBuf
    
    Sets the specified 64-bit floating point number at the current writerIndex and increases the writerIndex by 8 in this buffer.
    
    指定者:
    
    writeDouble 在类中 ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(byte[] src,
                 int srcIndex,
                 int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    writeBytes 在类中 ByteBuf
    
    srcIndex - the first index of the source
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(byte[] src)
```
    从类复制的说明: 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).
    
    指定者:
    
    writeBytes 在类中 ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeBytes 在类中 ByteBuf
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src,
                 int length)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeBytes 在类中 ByteBuf
    
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(ByteBuf src,
                 int srcIndex,
                 int length)
```
    从类复制的说明: 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).
    
    指定者:
    
    writeBytes 在类中 ByteBuf
    
    srcIndex - the first index of the source
    length - the number of bytes to transfer
  - writeBytes
```
public ByteBuf writeBytes(java.nio.ByteBuffer src)
```
    从类复制的说明: 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.
    
    指定者:
    
    writeBytes 在类中 ByteBuf
  - writeBytes
```
public int writeBytes(java.io.InputStream in,
             int length)
               throws java.io.IOException
```
    从类复制的说明: 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.
    
    指定者:
    
    writeBytes 在类中 ByteBuf
    
    length - the number of bytes to transfer
    
    返回:
    the actual number of bytes read in from the specified stream
    
    抛出:
    
    java.io.IOException - if the specified stream threw an exception during I/O
  - writeBytes
```
public int writeBytes(java.nio.channels.ScatteringByteChannel in,
             int length)
               throws java.io.IOException
```
    从类复制的说明: 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.
    
    指定者:
    
    writeBytes 在类中 ByteBuf
    
    length - the maximum number of bytes to transfer
    
    返回:
    the actual number of bytes read in from the specified channel
    
    抛出:
    
    java.io.IOException - if the specified channel threw an exception during I/O
  - writeZero
```
public ByteBuf writeZero(int length)
```
    从类复制的说明: ByteBuf
    
    Fills this buffer with NUL (0x00) starting at the current writerIndex and increases the writerIndex by the specified length.
    
    指定者:
    
    writeZero 在类中 ByteBuf
    
    参数:
    length - the number of NULs to write to the buffer
  - copy
```
public ByteBuf copy()
```
    从类复制的说明: 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.
    
    指定者:
    
    copy 在类中 ByteBuf
  - duplicate
```
public ByteBuf duplicate()
```
    从类复制的说明: 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 does not modify readerIndex or writerIndex of this buffer.
    The reader and writer marks will not be duplicated. Also be aware that this method will NOT call ByteBuf.retain() and so the reference count will NOT be increased.
    
    指定者:
    
    duplicate 在类中 ByteBuf
    
    返回:
    A buffer whose readable content is equivalent to the buffer returned by ByteBuf.slice(). However this buffer will share the capacity of the underlying buffer, and therefore allows access to all of the underlying content if necessary.
  - slice
```
public ByteBuf slice()
```
    从类复制的说明: 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.
    Also be aware that this method will NOT call ByteBuf.retain() and so the reference count will NOT be increased.
    
    指定者:
    
    slice 在类中 ByteBuf
  - slice
```
public ByteBuf slice(int index,
            int length)
```
    从类复制的说明: 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.
    Also be aware that this method will NOT call ByteBuf.retain() and so the reference count will NOT be increased.
    
    指定者:
    
    slice 在类中 ByteBuf
  - nioBuffer
```
public java.nio.ByteBuffer nioBuffer()
```
    从类复制的说明: ByteBuf
    
    Exposes this buffer's readable bytes as an NIO ByteBuffer. The returned buffer either share or contains the copied content of 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.
    
    指定者:
    
    nioBuffer 在类中 ByteBuf
    
    另请参阅:
    ByteBuf.nioBufferCount(), ByteBuf.nioBuffers(), ByteBuf.nioBuffers(int, int)
  - nioBuffers
```
public java.nio.ByteBuffer[] nioBuffers()
```
    从类复制的说明: ByteBuf
    
    Exposes this buffer's readable bytes as an NIO ByteBuffer's. The returned buffer either share or contains the copied content of 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.
    
    指定者:
    
    nioBuffers 在类中 ByteBuf
    
    另请参阅:
    ByteBuf.nioBufferCount(), ByteBuf.nioBuffer(), ByteBuf.nioBuffer(int, int)
  - toString
```
public java.lang.String toString(java.nio.charset.Charset charset)
```
    从类复制的说明: 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.
    
    指定者:
    
    toString 在类中 ByteBuf
  - toString
```
public java.lang.String toString(int index,
                        int length,
                        java.nio.charset.Charset charset)
```
    从类复制的说明: 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.
    
    指定者:
    
    toString 在类中 ByteBuf
  - indexOf
```
public int indexOf(int fromIndex,
          int toIndex,
          byte value)
```
    从类复制的说明: 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.
    
    指定者:
    
    indexOf 在类中 ByteBuf
    
    返回:
    the absolute index of the first occurrence if found. -1 otherwise.
  - bytesBefore
```
public int bytesBefore(byte value)
```
    从类复制的说明: 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.
    
    指定者:
    
    bytesBefore 在类中 ByteBuf
    
    返回:
    the number of bytes between the current readerIndex and the first occurrence if found. -1 otherwise.
  - bytesBefore
```
public int bytesBefore(int length,
              byte value)
```
    从类复制的说明: 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.
    
    指定者:
    
    bytesBefore 在类中 ByteBuf
    
    返回:
    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)
```
    从类复制的说明: 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.
    
    指定者:
    
    bytesBefore 在类中 ByteBuf
    
    返回:
    the number of bytes between the specified index and the first occurrence if found. -1 otherwise.
  - forEachByte
```
public int forEachByte(ByteBufProcessor processor)
```
    从类复制的说明: ByteBuf
    
    Iterates over the readable bytes of this buffer with the specified processor in ascending order.
    
    指定者:
    
    forEachByte 在类中 ByteBuf
    
    返回:
    -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)
```
    从类复制的说明: ByteBuf
    
    Iterates over the specified area of this buffer with the specified processor in ascending order. (i.e. index, (index + 1), .. (index + length - 1))
    
    指定者:
    
    forEachByte 在类中 ByteBuf
    
    返回:
    -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)
```
    从类复制的说明: ByteBuf
    
    Iterates over the readable bytes of this buffer with the specified processor in descending order.
    
    指定者:
    
    forEachByteDesc 在类中 ByteBuf
    
    返回:
    -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)
```
    从类复制的说明: 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)
    
    指定者:
    
    forEachByteDesc 在类中 ByteBuf
    
    返回:
    -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()
```
    从类复制的说明: 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.
    
    指定者:
    
    hashCode 在类中 ByteBuf
  - equals
```
public boolean equals(java.lang.Object o)
```
    从类复制的说明: 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.
    指定者:
    
    equals 在类中 ByteBuf
  - compareTo
```
public int compareTo(ByteBuf that)
```
    从类复制的说明: 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).
    
    指定者:
    
    compareTo 在接口中 java.lang.Comparable<ByteBuf>
    
    指定者:
    
    compareTo 在类中 ByteBuf
  - toString
```
public java.lang.String toString()
```
    从类复制的说明: 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().
    
    指定者:
    
    toString 在类中 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.
  - checkNewCapacity
```
protected final void checkNewCapacity(int newCapacity)
```
  - 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.

类 AbstractByteBuf

构造器概要

方法概要

从类继承的方法 io.netty.buffer.ByteBuf

从类继承的方法 java.lang.Object

从接口继承的方法 io.netty.util.ReferenceCounted

构造器详细资料

AbstractByteBuf

方法详细资料

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