# Buzz Number in Java

(Last Updated On: 02/06/2023)

In this blog, we’ll learn about the concept of Buzz Number in Java along with examples for better understanding. Now, it’s time to delve into the blog and explore the fascinating world of Buzz numbers.

## What is a buzz number in Java?

### Buzz numbers in Java definition

Buzz numbers are positive integers that are either divisible by 7 or have a 7 in their digits.

Although they are not prime numbers, they are still classified as composite numbers.

Buzz numbers exhibit certain patterns and properties that make them interesting and useful in various applications.

### Buzz numbers in Java Example:

– Example 1: The number 14 is a Buzz number because it is divisible by 7.

– Example 2: The number 27 is a Buzz number because it contains the digit 7.

– Example 3: The number 35 is a Buzz number because it is divisible by 7.

– Example 4: The number 42 is not a Buzz number because it is not divisible by 7 and does not contain the digit 7.

## Java code demonstrates how to check whether a number is a Buzz number or not

```//import required classes and packages
import java.util.*;
import java.io.*;
import java.util.Scanner;

//create BuzzNumberExample class to check whether the given number is Buzz number or not
class BuzzNumberExample {

// create checkNumber() method that returns true when it founds number Buzz
static boolean checkNumber(int number)
{
// check whether the number ends with 7, is divisible by 7 or not
if(number % 10 == 7 || number % 7 == 0)
return true;    //returns true when the number is Buzz
else
return false;   //returns false when the number is not Buzz
}

// main() method start
public static void main(String args[])
{
int n1, n2;

//create scanner class object to get input from user
Scanner sc=new Scanner(System.in);

//show custom message
System.out.println("Enter first number");

//store user entered value into variable n1
n1 = sc.nextInt();

if (checkNumber(n1))
System.out.println(n1 + " is a Buzz number");
else
System.out.println(n1 + " is not a Buzz number");

}
}```

Explanation of the code:

When you want to write a program to input a number and check whether it is a buzz number or not. You can refer to the above code. Now let’s understand the code.

First, the process begins by creating a class called “BuzzNumberExample.”

Second, the static method “checkNumber” of this class returns a boolean value and accepts an integer parameter named “number.”

Third, the “checkNumber” method determines whether a given number is divisible by 7 or has a seventh digit. If either condition satisfies, the method returns true, indicating that the number qualifies as a Buzz number. It returns false otherwise.

Fourth, the user is prompted to enter a number in the main method. The “checkNumber” method receives this number as an argument. If the “checkNumber” method returns true, the programme displays a message informing the user that the number is a Buzz number. If not, the program prints a message stating that the number is not a Buzz number.

Fifth, Using the logic and functionality of the checkNumber method, this code allows users to quickly determine whether a given number is a Buzz number or not.

Check out our blog on Prime Number in Java here

#### Output:

``````Enter first number
357
357 is a Buzz number``````

## Find all buzz numbers in given range

```import java.util.*;
import java.io.*;
import java.util.Scanner;

//create FindAllBuzzNumber class to get all the Buzz number in a given range
class FindAllBuzzNum
{
//main() method start
public static void main(String args[])
{
int range;

//create scanner class object
Scanner sc=new Scanner(System.in);

//show custom message
System.out.println("Enter the value of range");

//store user entered value into variable range
range = sc.nextInt();

for(int i = 1; i <= range; i++)
checkNumber(i);
}

// create checkNumber() method to check Buzz number
static void checkNumber(int num)
{
// check whether the number ends with 7, is divisible by 7 or not
if(num % 10 == 7 || num % 7 == 0)
System.out.println(num + " is an Buzz number");

}

}

```

Explanation of the code:

First, a class named “FindAllBuzzNum” is created. Inside this class, the main method prompts the user to enter a range value. The variable “range” stores the value of the range.

We employ a for loop to iterate through all the numbers from 1 to the specified range. For each number, we invoke the checkNumber method.

The checkNumber method takes an integer parameter “num” and checks if the number is divisible by 7 or if its last digit is 7. If either of these conditions is true, the program prints a message stating that the number is a Buzz number.

By using this code, users can easily find all the Buzz numbers within a given range by utilizing the checkNumber method’s logic and functionality. The code provides a convenient way to identify and display all the Buzz numbers in a range specified by the user.

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#### Output:

``````Enter the value of range
20
7 is an Buzz number
14 is an Buzz number
17 is an Buzz number``````

### Discussing the importance of Buzz numbers in mathematics and computer science

Although buzz numbers appear to be a simple concept, they are important in both mathematics and computer science. Understanding their properties and applications can help in a variety of areas of research and problem-solving.

Buzz numbers aid in the exploration of number patterns and relationships in mathematics. Researchers can learn about the distribution of numbers and their divisibility properties by identifying Buzz numbers. This understanding aids in the solution of number theory problems and the unraveling of prime number mysteries.

In computer science, buzz numbers are also significant. Programmers and algorithm developers frequently utilize them in programming and algorithm development. Identifying Buzz numbers can help to improve code performance and design efficient algorithms for tasks like number manipulation, data analysis, and cryptography.

Also, learn about Neon Number in Java here!

### Exploring the applications of Buzz numbers in various fields

Encryption algorithms and cryptographic systems make use of Buzz numbers. Their distinguishing features, such as being divisible by 7 or having a last digit of 7 or 0, can be used to generate secure keys and protect sensitive data.

Prime Factorization: Prime factorization algorithms often make use of Buzz numbers. The ability to decompose a Buzz number into its prime factors can help solve complex mathematical problems, simplify equations, and reveal hidden patterns within numerical sequences.

Game Development: To add a challenge or random element, game mechanics can incorporate Buzz numbers. A buzz number, for example, can be used as a target number for the player to guess in a guessing game, making the game more engaging and interactive.

Data Analysis: In data analysis, buzz numbers can be used to identify specific patterns or subsets within a dataset. For example, if a dataset contains Buzz numbers, it can indicate certain characteristics or properties of the data that warrant further investigation.

Overall, Buzz Numbers offer diverse applications in mathematics, computer science, cryptography, game development, and data analysis.We hope you found our blog on “Buzz Number in Java” informative and related to your Java programming queries. For more information and blogs on various programming languages keep updated on our Newtum’s website to explore our online coding courses and more.