import java.io.*;

public class JavaApplication1 {

   public int parsowanie(String plik, String fraza){
        int licznik=0;
       try{
           char c; int i;
           FileReader fr= new FileReader(plik+".txt");
           FileWriter fw= new FileWriter("kopia_"+plik+".txt");
           do{
               i=fr.read();
               if(i !=-1){
		c = (char) i;
               if (c<=9) c--;
               else if(c==0)c=1;
               fw.write(c);
               }
           }while(i != -1);
           fr.close();
	fw.close();

       }catch(Exception e){
           e.printStackTrace();}

       try{

        BufferedReader br = new BufferedReader (new FileReader(plik+".txt"));
	BufferedWriter bw = new BufferedWriter(new FileWriter("kopia_"+plik+".txt"));
        String s; String tab[]=new String[100];
         int l=0;
           while (s != null)
            {  s = br.readLine();
                for(int a=0;a<=s.length();a++){
                  tab=s[a].split(" ");
                  if (tab[a].equals (fraza))
                      tab[a].toLowerCase();
                  if (tab[a].equals (fraza))
                      tab[a].toUpperCase();
                  l=s.length();
                  bw.write(s);
                }
                      if (licznik<l)licznik=l;
                      br.close();
                      bw.close();
            }
       }catch(Exception e){
           e.printStackTrace();}
       return licznik;
   }
    public static void main(String[] args) {

    }

}