BigDecimal sqrt() Method in Java with Examples

The java.math.BigDecimal.sqrt(MathContext mc) is an inbuilt function added in Java SE 9 & JDK 9 which returns BigDecimal value of square root of a BigDecimal on which sqrt() method is applied with rounding according to the context settings. Syntax:

public BigDecimal sqrt(MathContext mc)

Parameters: This method accepts a parameter mc of type MathContext for context settings. Return Value: This method returns an approximation to the square root of this with rounding according to the context settings. Exception: The method throws ArithmeticException for following conditions.

• If BigDecimal number is less than zero.
• If an exact result is requested (Precision = 0) and there is no finite decimal expansion of the exact result.
• If the exact result cannot fit in Precision digits.

Note: This method is only available from JDK 9. Below programs are used to illustrate the sqrt() method of BigDecimal: Example 1: Example 2: Showing Exception thrown by sqrt() method.

References: https://docs.oracle.com/javase/9/docs/api/java/math/BigDecimal.html#sqrt-java.math.MathContext-