# Java.math.BigDecimal.abs() Method

## Description

The java.math.BigDecimal.abs(MathContext mc) returns a BigDecimal whose value is the absolute value of this BigDecimal, with rounding according to the context settings.

## Declaration

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

```public BigDecimal abs(MathContext mc)
```

## Parameters

mc − The context to use.

## Return Value

This method returns the absolute value of the called value i.e abs(this), rounded as necessary.

## Exception

ArithmeticException − If the result is inexact but the rounding mode is UNNECESSARY.

## Example

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

```package com.tutorialspoint;

import java.math.*;

public class BigDecimalDemo {

public static void main(String[] args) {

// create 3 BigDecimal objects
BigDecimal bg1, bg2, bg3;

MathContext mc = new MathContext(2);
MathContext mc1 = new MathContext(4);

// assign value to bg1
bg1 = new BigDecimal("40.1234");

// assign absolute value of bg1 to bg2 rounded to 2 precision using mc
bg2 = bg1.abs(mc);

// assign absolute value of bg1 to bg3 rounded to 4 precision using mc1
bg3 = bg1.abs(mc1);

String str1,str2;
str1 = "Absolute value, rounded to 2 precision is " + bg2;
str2 = "Absolute value, rounded to 4 precision is " + bg3;

// print bg2 and bg3 value
System.out.println( str1 );
System.out.println( str2 );
}
}
```

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

```Absolute value, rounded to 2 precision is 40
Absolute value, rounded to 4 precision is 40.12
```
java_math_bigdecimal.htm