Double value to round up in Java

Question

I have a double value = 1.068879335 i want to round it up with only two decimal values like 1.07.

I tried like this

DecimalFormat df=new         


        

Answer 1

If you do not want to use DecimalFormat (e.g. due to its efficiency) and you want a general solution, you could also try this method that uses scaled rounding:

public static double roundToDigits(double value, int digitCount) {
    if (digitCount < 0)
        throw new IllegalArgumentException("Digit count must be positive for rounding!");

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