import java.io.*;

class FileOutputDemo {    
    public static void main(String args[]) {              
        FileOutputStream out; // declare a file output object
        FileInputStream fileIn; // declare a file input object
        PrintStream p; // declare a print stream object
        DataInputStream in;
        int lineNumber = 1;

        if (args.length == 1) {    
            try {
                            //connect to "input.txt
                fileIn = new FileInputStream(args[0]);
            
                // Convert our input stream to a
                            // DataInputStream
                in = new DataInputStream(fileIn);
            
                // Create a new file output stream
                            // connected to "myfile.txt"
                out = new FileOutputStream("output.txt");

                // Connect print stream to the output stream
                p = new PrintStream( out );

                while (in.available() !=0) {
                                        // Print file line to screen
                    p.println (lineNumber + in.readLine());
                    lineNumber++;
                }
                in.close();

                p.close();
            } catch (Exception e) {
                System.err.println ("Error Reading/Writing from/to file");
            }
        }
    }
}