import java.util.Scanner;
import java.io.FileNotFoundException;
import java.io.File;

class testScanner5{

    public static void main(String args[]){

        try{
            File file = new File("targetfile.txt");
            Scanner scan = new Scanner(file);
            scan.useDelimiter("\\r\\n");

            int line = 1;

            while(scan.hasNext()){
                String str = scan.next();
                System.out.println(line + ":" + str);
                line++;
            }
        }catch(FileNotFoundException e){
            System.out.println(e);
        }
    }
}