// FileIO.java
// Illustrates file input-output, and String tokenization using String.split()

import java.io.*;

class FileIO{

   public static void main(String[] args) throws IOException{
      int i, n, count=0;
      String line;
      String[] item;

      // check command line for correct number of arguments
      if(args.length != 2){
         System.out.println("Usage: java FileIO infile outfile");
         System.exit(1);
      }

      // open files for reading and writing
      BufferedReader in = new BufferedReader(new FileReader(args[0]));
      PrintWriter out = new PrintWriter(new FileWriter(args[1]));

      // read each line if input file, then count and print tokens
      line = in.readLine();
      while( line!=null ){
         count++;
         item = line.trim().split("\\s+");
         n = item.length;
         i = item[0].equals("")?1:0;
         out.println("line " + count + " contains " + (n-i) + " token" + ((n-i)==1?": ":"s: "));
         while(i<n){
            out.println("   " + item[i]);
            i++;
         }
         out.println();
         line = in.readLine();
      }

      // close files
      in.close();
      out.close();

   }
}