Groovy example source code file (harmonic.java)

This example Groovy source code file (harmonic.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

decimalformat, decimalformat, numberformat, numberformat, text

The Groovy harmonic.java source code

/* The Great Computer Language Shootout
   http://shootout.alioth.debian.org/
 
   contributed by Paul Lofte
*/

import java.text.DecimalFormat;
import java.text.NumberFormat;

public class harmonic {

    static final NumberFormat formatter = new DecimalFormat("#.000000000");
    
    public static void main(String[] args) {
        int n = 10000000;
        if (args.length > 0) n = Integer.parseInt(args[0]);

        double partialSum = 0.0;
        for (int i=1; i<=n; i++) partialSum += 1.0/i;
        
        System.out.println(formatter.format(partialSum));
    }
}