# Java.math.BigDecimal.pow() Method

## Description

The java.math.BigDecimal.pow(int n, MathContext mc) method returns a BigDecimal whose value is (thisn). The current implementation uses the core algorithm defined in ANSI standard X3.274-1996 with rounding according to the context settings.

In general, the returned numerical value is within two ulps of the exact numerical value for the chosen precision.

## Declaration

Following is the declaration for java.math.BigDecimal.pow() method.

```public BigDecimal pow(int n, MathContext mc)
```

## Parameters

• n − Power to raise this BigDecimal to.

• mc − The context to use.

## Return Value

This method returns the value of BigDecimal Object raised to the power of n i.e thisn, using the ANSI standard X3.274-1996 algorithm.

## Exception

ArithmeticException − If the result is inexact but the rounding mode is UNNECESSARY, or n is out of range.

## Example

The following example shows the usage of math.BigDecimal.pow() method.

```package com.tutorialspoint;

import java.math.*;

public class BigDecimalDemo {

public static void main(String[] args) {

// create 2 BigDecimal Objects
BigDecimal bg1, bg2;

MathContext mc = new MathContext(4); // 4 precision

bg1 = new BigDecimal("2.17");

// apply pow method on bg1 using mc
bg2 = bg1.pow(3, mc);

String str = "The value of " + bg1 + " to the power of 3, rounded to " + bg2;

// print bg2 value
System.out.println( str );
}
}
```

Let us compile and run the above program, this will produce the following result −

```The value of 2.17 to the power of 3, rounded to 10.22
```
java_math_bigdecimal.htm