In this tutorial you will see how to clean a buffer using clear method in java.In this tutorial you will see how to clean a buffer using clear method in java.
In this tutorial, we will discuss the use of clear() method. The Buffer class is a
container for handling primitive data type. The clear() method is available in Buffer class.
The ByteBuffer class is available in java.nio package.
In this example, the clear() method clean a buffer for further use, and
method the position will be zero and limit will be capacity of buffer. The method allocate
( int capacity) creates a new byte buffer. The FileChannel class creates a channel for reading,
and writing file. The FileChannel is similar to the stream but they are few different. The channel
can read write both, but stream can either read-only or write-only. The getChannel method of
FileInputStream class returns the channel associated with this file input stream. The read()
method of FileChannel class fills byte buffer.
About ByteBuffer API:
The java.nio.ByteBuffer class extends java.nio.Buffer class. It provides the following methods:
|static ByteBuffer||allocate( int capacity)||The allocate() method create a byte buffer of specified capacity.|
Before clear method data in buffer
After clear method data in buffer