To square a number in Java do this:

`Math.pow(number, 2)`

.So, if your number is `5`

, then you can square it like so:

```
int myNumber = 5;
double square = Math.pow(myNumber, 2); // 25.0
```

## Another way

Another way is to multiply the number by itself using the `*`

operator:

```
int myNumber = 5;
double square = myNumber * myNumber; // 25.0
```