Using FileChannels to Access a File : FileChannel « File Input Output « Java






  1. Java
  2. File Input Output
  3. FileChannel

Using FileChannels to Access a File

    

import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
  public static void main(String args[]) throws IOException {
    FileInputStream fis = new FileInputStream("FileChannelExample.java");
    FileChannel fc = fis.getChannel();

    ByteBuffer bb = ByteBuffer.allocate((int) fc.size());

    fc.read(bb);
    bb.flip();

    String fileContent = new String(bb.array());

    fc.close();
    fc = null;

    System.out.println("fileContent = " + fileContent);
  }
}








Related examples in the same category

1.Performs a straightforward copy operation
2.Write to a file using FileChannel.
3.Write to a mapped file.
4.Copy a file using NIO.
5.Get FileChannel from FileOutputStream and FileInputStream
6.Transfer between FileChannel
7.Read bytes from the specified channel, decode them using the specified Charset, and write the resulting characters to the specified writer
8.Demonstrates file locking and simple file read and write operations using java.nio.channels.FileChannel
9.Create a read-only memory-mapped file
10.Create a read-write memory-mapped file
11.Creating a Stream from a Channel
12.Create an inputstream on the channel
13.Create a private (copy-on-write) memory-mapped file.
14.A character output stream that sends output to a printer
15.Write file with FileChannel
16.Read file with FileChannel
17.Copy ALL available data from one stream into another with Channel
18.Copy file with FileChannel