In this program, You will learn how to find the sum of first and last digit of a number in java.

```
while(condition){
//statement
}
```

## Example: How to find the sum of first and last digit of a number in java.

```
import java.util.Scanner;
class Main {
public static void main(String args[]) {
int r, n, rev = 0, fd, ld, s;
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number:");
n = sc.nextInt();
ld = n % 10;
while (n > 0) {
r = n % 10;
rev = rev * 10 + r;
n = n / 10;
}
fd = rev % 10;
s = fd + ld;
System.out.println("Sum of first and last digits:" + s);
}
}
```

#### Output:

```
Enter a number:4533
Sum of first and last digits:7
```