Java tutorial
import java.io.*; public class Main { public static void main(String[] args) { try { RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw"); raf.writeUTF("java2s.com Hello World"); // set the file pointer at 0 position raf.seek(0); // read and print the contents of the file System.out.println(raf.readUTF()); // return the channel of the file System.out.println(raf.getChannel()); // close the strea and release resources raf.close(); } catch (IOException ex) { ex.printStackTrace(); } } }