MultiplicationTableWithoutFormatter

public class MultiplicationTableWithoutFormatter {
  public static void main(String[] args) {
    StringBuilder sb = new StringBuilder();
    sb.append(" |");
    for (int i = 1; i < 10; i++) sb.append("  " + i);
    sb.append("\n");
    for (int i = 0; i < 3 * 9 + 2; i++) sb.append("-");
    sb.append("\n");
    for (int i = 1; i < 10; i++) {
      sb.append("" + i + "|");
      for (int j = 1; j < 10; j++) {
        int mul = i * j;
        if (mul < 10) sb.append("  " + mul);
        else sb.append(" " + mul);
      }
      sb.append("\n");
    }
    System.out.print(sb);
  }
}