Displays The Number Of Characters, Lines and Words in a Text File

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,ch=0,ln=0,wd=0;
  FileInputStream fin=new FileInputStream(s);
  do 
  {
   s1= fin.read();
   if(s1 !=-1) 
   {
    ch++;
    if((char)s1==' '||(char)s1=='\n')
     wd++;
    if((char)s1=='\n')
     ln++;
   }
  } while(s1!= -1);
  System.out.println("The number of characters is "+ch);
  System.out.println("The number of words is "+wd);
  System.out.println("The number of lines is "+ln);
  fin.close();
 }
}