Reading and Writing using random access file.

import java.io.*;
public class RandomFile {
    public static void main(String args[])throws IOException
    {
        System.out.println("Reading Content in Read Write Mode");
        RandomAccessFile Ra=new RandomAccessFile("Ex1.txt","rw");
        Ra.seek(Ra.length());
        System.out.println("Writing Content In File : Ex.txt");
        String srt="Use For Java Program..";
     
Ra.write(srt.getBytes());
        Ra.seek(0);
        System.out.println("Reading Content Of File : Ex.txt \nContent :");
        while((srt=Ra.readLine())!=null)
            System.out.print(srt);
        Ra.close();
    }
}