Create a read-write memory-mapped file - Java File Path IO

Java examples for File Path IO:MappedByteBuffer

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Description

Create a read-write memory-mapped file

Demo Code


import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {

  public void main(String[] argv) {
    try {/*from   ww  w . j a v a 2s  .  c  o  m*/
      File file = new File("filename");

      // Create a read-write memory-mapped file
      FileChannel rwChannel = new RandomAccessFile(file, "rw").getChannel();
      ByteBuffer wrBuf = rwChannel.map(FileChannel.MapMode.READ_WRITE, 0,
          (int) rwChannel.size());
    } catch (IOException e) {
    }
  }
}

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