import java.io.*;

public class LineCount {

    public static void main(String[] args) throws IOException {
  LineNumberReader LNumReader= new LineNumberReader(new FileReader("Text.txt"));
  String num = "";
  String content = "";
  while((content = LNumReader.readLine())!=null){
      num = Integer.toString(LNumReader.getLineNumber());
      System.out.println(num+": "+content);
  }
  LNumReader.close();
    }

}