private void fizzBuzz() {
  for(int i = 1; i <= 100; i++) {
    if(i % 15 == 0) {
      System.out.println("FizzBuzz");
    } else if(i % 5 == 0) {
      System.out.println("Buzz");
    } else if(i % 3 == 0) {
      System.out.println("Fizz");
    } else {
      System.out.println(i);
    }
  }
}

Create FizzBuzz.java