FileOperation

Three methods of file segmentation and merging in Java

Results

Method	Size	Segment	Merge
IO	38.7MB	287s	285s
BufferedIO	208MB	7s	3s
NIO(MappedByteBuffer)	208MB	< 1s	< 1s

Note: Time is for reference only, and is different according to the machine environment.

Start

1. run fileoperation -> FileGUI.java to start the project.
2. You can change the method in FileGUI.java. 0 means InputStream and OutputStream,1 means BufferedInputStream and BufferedOutputStream,2 means MappedByteBuffer.

public static void main(String[] args) throws Exception {
  //new FileGUI(0);//IO
    new FileGUI(1);//BufferedIO
  //new FileGUI(2);//NIO
}