import java.io.*;
class ReadFileWithTime 
{
    public static void main(String[] args) 
    {
        try{
          FileReader fr=new FileReader("C:/data.txt");
          BufferedReader br=new BufferedReader(fr);
          String str="";
          while((str=br.readLine())!=null){
              System.out.println(str);
              Thread.sleep(30000);
           }
        }
        catch(Exception e){
            System.out.println(e);
        }
    }
}