Harmonic Number In Java Example

            /* ............... START ............... */
                
public class JavaHarmonicNumber {

	public static void main(String[] args) {

		int x = Integer.parseInt(args[0]);

		// compute 1/1 + 1/2 + 1/3 + ... + 1/x
		double sum = 0.0;
		for (int i = 1; i <= x; i++) {
			// sum += 1.0 / i;
			sum = sum + (1.0 / i);
		}

		System.out.println(sum);
	}
}
                /* ............... END ............... */