In this program, you will learn how to find the smallest digit of a number using recursion in java.

```
123 => 1
9824 => 2
```

## Example: How to find the smallest digit of a number using recursion in java.

```
import java.util.Scanner;
class Main {
int sm = 9, r;
int largestDigit(int n) {
if (n > 0) {
r = n % 10;
if (sm > r)
sm = r;
largestDigit(n / 10);
}
return sm;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number:");
int n = sc.nextInt();
Main obj = new Main();
int sm = obj.largestDigit(n);
System.out.println("Smallest digit:" + sm);
}
}
```

#### Output:

```
Enter a number:3256
Smallest digit:2
```