Java RandomAccessFile getChannel() Method with Example

RandomAccessFile Class getChannel() method: Here, we are going to learn about the getChannel() method of RandomAccessFile Class with its syntax and example.
Submitted by Preeti Jain, on March 23, 2020

RandomAccessFile Class getChannel() method

getChannel() method is available in java.io package.
getChannel() method is used to get the distinct FileChannel linked with this RandomAccessFile stream.
getChannel() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
getChannel() method does not throw an exception at the time of returning the file channel.

Syntax:

    public final FileChannel getChannel();

Parameter(s):

It does not accept any parameter.

Return value:

The return type of this method is FileChannel, it gets FileChannel object attached with this RandomAccessFile.

Example:

// Java program to demonstrate the example 
// of final FileChannel getChannel() method of
// RandomAccessFile

import java.io.*;

public class RAFGetChannel {
 public static void main(String[] args) throws Exception {
  // Instantiate a random access file
  // object with file name and permissions
  RandomAccessFile ra_f = new RandomAccessFile("e:/includehelp.txt", "rw");

  // By using writeUTF() method is to 
  // write data in the file
  ra_f.writeUTF("Welcome, in Java World!!!");

  // Initially set the file pointer
  // is at 0 for reading the file
  ra_f.seek(0);

  // To read file content by using
  // readUTF()
  System.out.println("ra_f .readUTF(): " + ra_f.readUTF());

  // By using getChannel() method is to
  // return the channel linked with this
  // object
  System.out.println("ra_f.getChannel(): " + ra_f.getChannel());

  // By using close() method isto
  // close this stream ran_f
  ra_f.close();
 }
}

Output

E:\Programs>java RAFGetChannel
ra_f .readUTF(): Welcome, in Java World!!!
ra_f.getChannel(): sun.nio.ch.FileChannelImpl@e48e1b

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