BigDecimal setScale and round in java

BigDecimal setScale and round in java

In Java, you can use the setScale and setRoundingMode methods of the BigDecimal class to set the scale (number of decimal places) and rounding mode for a BigDecimal number. These methods allow you to control the precision and rounding behavior of your decimal calculations.

Here's how you can use setScale and setRoundingMode:

import java.math.BigDecimal; import java.math.RoundingMode; public class BigDecimalSetScaleAndRound { public static void main(String[] args) { BigDecimal number = new BigDecimal("123.456789"); // Set the scale to 2 decimal places and round using HALF_UP rounding mode BigDecimal roundedNumber = number.setScale(2, RoundingMode.HALF_UP); System.out.println("Original number: " + number); System.out.println("Rounded number: " + roundedNumber); } }

In this example:

  1. We create a BigDecimal number named number with the value "123.456789".

  2. We use the setScale method to set the scale to 2 decimal places, and we specify the rounding mode as RoundingMode.HALF_UP.

  3. The result is a new BigDecimal called roundedNumber, which contains the rounded value with the specified scale and rounding mode.

When you run the code, you'll see that roundedNumber contains the value 123.46, which is the original number rounded to 2 decimal places using the "half-up" rounding mode.

You can change the scale and rounding mode according to your specific requirements by modifying the arguments passed to the setScale method and the RoundingMode enum.

More Tags

combinations model-validation C android-architecture-lifecycle aapt att touchpad dispatcher uibezierpath wkhtmltoimage

More Java Questions

More Mortgage and Real Estate Calculators

More Retirement Calculators

More Internet Calculators

More Gardening and crops Calculators