How to square a number in Java

Java FAQ: How do I square a number in Java?

You can square a number in Java in at least two different ways:

  1. Multiply the number by itself.
  2. Call the Math.pow function.

Here's how to square a number by multiplying it by itself:

i = 2
int square = i * i

In that case, if you print the value of square, it will be 4.

Here's how you call the Math.pow method to square a number:

i = 2
int square = Math.pow(i, 2)

In general I just multiply the number by itself to get the squared value, but the advantage of the Math.pow method is that you can easily get the cube of a number, like this:

i = 2
int square = Math.pow(i, 3)

Therefore, it's helpful to know both approaches.

I hope these examples of how to get the square of a number in Java have been helpful. As usual, if you have any questions or comments, just leave a note in the Comments section below.

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