In this program, You will learn how to find the square root of a number in java.

`double r = Math.sqrt(n);`

## Example: How to find the square root of a number in java.

```
import java.util.Scanner;
class Main {
public static void main(String args[]) {
double n, r;
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number:");
n = sc.nextDouble();
r = Math.sqrt(n);
System.out.println("Square Root is :" + r);
}
}
```

#### Output:

```
Enter a number:16
Square Root is :4.0
```