Reading/Writing to/from Files using FileChannel and ByteBuffer in Java

In the past, I have talked about RandomAccessFile and how it can be used for doing faster IO in Java, and  in this Java NIO tutorial, we are going to see how to use read/write data from using FileChannel and ByteBuffer. Channel provides an alternate way to read data from a file, it provides better performance than InputStream or OutputStream. It can also be opened in blocking and non-blocking mode. Though FileChannles are read/write channels and they are always blocking, they cannot be put into non-blocking mode. The RandomAccessFile class treats a file as an array of Bytes. You can write your data in any position of the Array and you can read from any position. To do that, it uses a pointer that holds the current position and provides several methods like seek() to move that pointer.

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