Fastest way for line-by-line reading STDIN?

I'm looking for the most time-efficient way to read STDIN line-by-line.

The first line is the number of conditions to test. All the following lines are conditions (strings) with a maximum of 100 000 characters.

I have already tried the following (plus result for 4 times 90 000 characters:

• Scanner with a while-loop (7255 ms)

  Scanner sc = new Scanner(System.in);
  int numberOfLines = Integer.parseInt(sc.nextLine());
  long start = 0;
  int i = 1;
  while (i<=numberOfLines){
      start = System.currentTimeMillis();
      sc.nextLine();
      Debug.println((System.currentTimeMillis()-start) + "ms for scanner while");
      i++;
  }
  

  • Results :
    1. 3228ms for scanner while
    2. 2264ms for scanner while
    3. 1309ms for scanner while
    4. 454ms for scanner while

• Scanner with a for-loop (7078 ms)

  Scanner sc = new Scanner(System.in);
  int numberOfLines = Integer.parseInt(sc.nextLine());
  long start = 0;
  for (int i = 1; i<= numberOfLines;i++){
      start = System.currentTimeMillis();
      sc.nextLine();
      Debug.println((System.currentTimeMillis()-start) + "ms for scanner for");
      //i++;     
  }
  

  • Results :
    1. 3168ms for scanner for
    2. 2207ms for scanner for
    3. 1236ms for scanner for
    4. 467ms for scanner for

• BufferedReader with a for-loop (7403 ms)

  try {
  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  
  int numberOfLines = Integer.parseInt(br.readLine());
  long start = 0;
  for (int i = 0; i< numberOfLines;i++){
      start = System.currentTimeMillis();
      br.readLine();
      Debug.println((System.currentTimeMillis()-start) + "ms for bufferreader for");
      //i++;
  }
   } catch (Exception e) {
  System.err.println("Error:" + e.getMessage());
  

  }

  • Results :
    1. 3273ms for bufferreader for
    2. 2330ms f