Reads a File And Displays The File On The Screen

import java.io.*;
class File2
{
 public static void main(String[] args) throws IOException
 {
  BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
  System.out.println("Enter a file name");
  String s=br.readLine();
  int s1,i=1;
  FileInputStream fin=new FileInputStream(s);
  System.out.println(i+++” “);
  do 
  {
   s1= fin.read();
   if(s1 !=-1) 
         System.out.println((char)s1);
   if((char)s1=='\n')
     System.out.println(i+++” “);
   }
  } while(s1!= -1);
  
  fin.close();
 }
}