File i/o (java)

import java.io.*;
class File
{
  public static void main(String args[]) throws Exception
  {
     String s="karteek is studying in GIT";
     PrintWriter p=new PrintWriter(new FileWriter("karteek.txt"));
     p.println(s);
     p.close();
     BufferedReader f=new BufferedReader(new FileReader("karteek.txt"));
     String s1=f.readLine();
    System.out.println(s1);
     f.close();
   }
}