public static void main(String[] args) {
        // TODO: Add your code here
      String x="    # chs name\n      # protocol-statistics-enable\n    # sample";
      String regEx="#.+# +([^#]+).+sample"; 
          Pattern p=Pattern.compile(regEx,Pattern.DOTALL); 
          Matcher m=p.matcher(x);
          boolean rs=m.find(); 
          if (rs)
              System.out.println(m.group(1));         
    }