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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
}