## org.apache.cassandra.io.util
Class DataOutputBuffer

    java.lang.Object
      java.io.OutputStream
          java.io.FilterOutputStream
              java.io.DataOutputStream
                  org.apache.cassandra.io.util.DataOutputBuffer

All Implemented Interfaces:
  java.io.Closeable, java.io.DataOutput, java.io.Flushable

    public final class DataOutputBuffer

extends java.io.DataOutputStream

An implementation of the DataOutputStream interface using a FastByteArrayOutputStream and exposing its buffer so copies can be avoided. This class is completely thread unsafe.

Field Summary

Fields inherited from class java.io.DataOutputStream
`written`

Fields inherited from class java.io.FilterOutputStream
`out`

Constructor Summary
`DataOutputBuffer()`
`DataOutputBuffer(int size)`

Method Summary
`byte[]` `getData()` Returns the current contents of the buffer.
`int` `getLength()` Returns the length of the valid data currently in the buffer.
`void` `write(byte[] b, int off, int len)`
`void` `write(int b)`

Methods inherited from class java.io.DataOutputStream
`flush, size, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF`

Methods inherited from class java.io.FilterOutputStream
`close, write`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface java.io.DataOutput
`write`

Constructor Detail

### DataOutputBuffer

    public DataOutputBuffer()

### DataOutputBuffer

    public DataOutputBuffer(int size)

Method Detail

### write

    public void write(int b)

  Specified by:
    `write` in interface `java.io.DataOutput`
  Overrides:
    `write` in class `java.io.DataOutputStream`

### write

    public void write(byte[] b,
                      int off,
                      int len)

  Specified by:
    `write` in interface `java.io.DataOutput`
  Overrides:
    `write` in class `java.io.DataOutputStream`

### getData

    public byte[] getData()

  Returns the current contents of the buffer. Data is only valid to `getLength()`.

### getLength

    public int getLength()

  Returns the length of the valid data currently in the buffer.

Copyright © 2013 The Apache Software Foundation