Double değerler için virgülden sonra yuvarlama

src\DoubleRound.java

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/**
 *
 * @author BeytullahC
 */
public class DoubleRound {

    public static void main(String[] args) {
        System.out.println(round(331.15d, 2));
    }

    public static double round(double value, int places) {
        if (places < 0) {
            throw new IllegalArgumentException();
        }

        long factor = (long) Math.pow(10, places);
        value = value * factor;
        long tmp = Math.round(value);
        return (double) tmp / factor;
    }
}

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