math

# Calculate power with Math pow

In this example we shall show you how to calculate the power of a number using the `pow(double a, double b)`  API method of Math Class. The class Math contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. To calculate the power of a number one should perform the following steps:

• Call the `pow(double a, double b)` method. The method takes two double parameters. The first argument is the number that will be raised and the second one is the power. So, double `a` is raised to the power of `b`,

as described in the code snippet below.

```package com.javacodegeeks.snippets.core;

public class CalculatePowerWithMathPow {

public static void main(String[] args) {

// raises 3 to 2 which equals with 9
System.out.println(Math.pow(3,2));

// raises -2 to 2 which equals with 4
System.out.println(Math.pow(-2,2));

// raises 2.5 to 3 which equals with 6.25
System.out.println(Math.pow(2.5,2));

}

}
```

Output:

``````9.0
4.0
6.25```
```

This was an example of how to calculate the power of a number using the `pow(double a, double b)` API method of Math Class in Java.

## Want to know how to develop your skillset to become a Java Rockstar? ### Byron Kiourtzoglou

Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.
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