A Fibonacci printing program

The program printing the Fibonacci numbers lower than 50 is written below:

Code:

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class Fibonacci {
    /** Print out the Fibonacci sequence for values < 50 */
    public static void main(String[] args) {
        int lo = 1;

        int hi = 1;

      System.out.println(lo);
      while (hi < 50) {
          System.out.println(hi);
          hi = lo + hi;      // new hi
          lo = hi - lo;      /* new lo is (sum - old lo)
                                  that is, the old hi */
      }
  }
}

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