Rounding Logic for decimal digits in java

Question

I need the rounding logic in the following pattern..for 2.23 it should be 2.2 ,for 2.26 it should be 2.3... Please Help out

Welcome to SO:SE. The principle on the site is to help user after they have shown their own effort to solve their problems. Such effort may be to search online with keywords like `java rounding`. See [ask] to improve your post please. — mins, Apr 23 '15 at 06:24
This might help you http://stackoverflow.com/questions/153724/how-to-round-a-number-to-n-decimal-places-in-java — 0o'-Varun-'o0, Apr 23 '15 at 06:25

score 1 · Accepted Answer · answered Apr 23 '15 at 06:28

1

double a = <ur NUmber>;
double roundOff = (double) Math.round(a*10)/10;

Hope this would help you. here 2.25 would be round off to 2.3

answered Apr 23 '15 at 06:28

raki

Masudul · Answer 2 · 2015-04-23T06:36:10.120

0

If you want to print, than use printf method, It has default rounding.

System.out.printf("%.1f", 2.23);
System.out.printf("%.1f", 2.26);

If you need rounding value for calculation than use Math.round

double newValue= (double)Math.round(value*10)/10;

edited Apr 23 '15 at 06:36

answered Apr 23 '15 at 06:26

Masudul

2 Answers2