Setting double value precision

Question

Is there any way to set the precision on a double.
Example:
double = 25.00016000207654
precision = 4 decimal places (or some value 'x')
So I am looking for 25.0002 (this value will then be converted to a string and then displayed).

Answer 1

Here is a simple little program that will allow you to round and format the way you wanted:
import java.text.*;
public class testFormat {
   public static void main(String[] args) {
      double x=25.00016000207654;
      x=Round(x,4);
      DecimalFormat NF=new DecimalFormat("0.####");
      String formatted=NF.format(x);
      System.out.println(formatted);
   public static double Round(double x, int dec) {
      double multiple=Math.pow(10,dec);
      return Math.round(x*multiple)/multiple;
}V.V.