Small question from a newbie

[Tiemen]

I'm currently making a task for university but i cant find this in my sillabus anywhere :O
How can i round a double to a certain amount of digits?
I know the things like Math.floor, Math.ceil, Math.rint and Math.round....

So basically i want

1.111 instead of 1.1111111111111112

 

[blindkilla]

You could use a number formatter.

Here is an example of how to use it: http://www.exampledepot.com/egs/java.text/FormatNum.html

 

[db0winsanity]

public class roundToThree {
     public static void main(String[] args){
             DecimalFormat twoDForm = new DecimalFormat("#.###");
              System.out.println(twoDForm.format(10.1234));
     }
}

 

[Tiemen]

Thanks for the replies
Anyways, created my own method already to do it (multiply, round, divide), so I only use things I've learnt yet

 

[db0winsanity]

Glad i could help, even if you didnt use it haha