import java.util.Scanner;

public class BuzzNumber {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.println("Enter number:");
        int input = s.nextInt();
        int lastNumber = input % 10;
        if (lastNumber == 7 || input % 7 == 0) {
            System.out.println("Buzz Number");
        } else {
            System.out.println("Not a Buzz Number");
        }
    }
}

Output :

Enter number:
34
Not a Buzz Number

A buzz number is a number that ends with 7 and can be divided by 7.