Round number to fewer decimals - A Java Code Example

Do you need help with your Java programming?

Click here for instant help with your Java code.

There are severals ways to accomplish this. The example below shows two of them.
The second example is only possible if you run Java version 1.5 or later.

import java.text.DecimalFormat;

public class NumberUtil {

  public void roundNumber(double numberToRound) {

    DecimalFormat df = new DecimalFormat("0.000") ;
    System.out.println( "Rounded number = " + df.format( numberToRound ) ) ;


    //This only works with Java runtime 1.5 or later
    System.out.println(String.format("Rounded number = %.3f", numberToRound));

  }

  public static void main(String[] args) {
    NumberUtil util = new NumberUtil();
    util.roundNumber(1.23856);
  }
}

The output of either one of the above rounding methods is:

"Rounded number = 1,239"

Do you know your Java?
Take a Ten-Question-Java-Quiz!

Search for code examples on this site

Need help with your Java code? It's secure and confidential.

This is how it works:

Send a detailed description of what you need help with, the more details the better. Also provide a deadline for when it has to be finished. More time means better chance of putting your request into the schedule.

If the request is serious you will shortly receive an email with the price, to which you have to respond if you accept.

Once you have accepted, the work will begin on developing your code by an experienced Java developer. When the code is finished a link to a secure payment will be sent to you.

The source code is then sent to you once the payment is completed.

IMPORTANT! The request needs to be very detailed, else it may be ignored.

Write your detailed request here:

E-mail address: