How to use Math.pow in Java

Thanks to the math package, Java provides a lot of useful methods for mathematical calculations.

One of the most common operations is exponentiation.

In this post, we'll learn how to use the pow method of the Math class to calculate the power of a number in Java.

How to calculate the power of a number in Java

As mentioned before, the Math class provides a pow method to calculate the power of a number.

The pow method takes two parameters:

• a - the base
• b - the exponent

That means that the pow method calculates the power of a to the power of b.

Let's see how to use it to calculate squaring the number 5:

JAVA
double result = Math.pow(5, 2);

System.out.println(result); 

BASH
25.0

The result is given in the double type.

If you need it as an int, you can cast it:

JAVA
int result = (int) Math.pow(5, 2);

System.out.println(result); 

BASH
25

Keep in mind that the base and exponent can be a double as well:

JAVA
double result = Math.pow(5.5, 2);

System.out.println(result); 

BASH
30.25

Conclusion

In this post, we learned how to use the pow method of the Math class to calculate the power of a number in Java.

Simply pass it the base and the exponent and it will return the result.

Thanks for reading!

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