## \$show=/label

A quick guide to write the java program for FizzBuzz solution in java and new Java 8 stream api.

## 1. Overview

In this tutorial, We'll learn how to write a java program to fizzbuzz solution in java language.

This is a fun game mostly played in the elementary schools with you friends in schools.

FizzBuzz game rules:

This is a multiplayer game. When your turn comes then you have to say one number. If the number is multiple of 5 then you have to say "Fizz" in the french ascent. If the number is multiple of 7 then say "Buzz". If the number is multiple of 5 and 7 then say "FizzBuzz". If you can not say the right word for your number then you are out of the game. So must have to say the correct fizz buzz word to continue the game otherwise game will be continued without you. Whoever alone in the game that person is the winner.

Let us implement Fizz Buzz game in java language with the simple if else conditions.

## 2. Java FizzBuzz Solution Using If else

The below logic is implemented using simple while loop and if-else conditions.

```package com.javaprogramto.programs.fizzbuzz;

/**
* Java program to implement fizz buzz solution
* @author javaprogramto.com
*
*/
public class FizzBuzzExample {

public static void main(String[] args) {

// limit the fizz buzz game
int limit = 100;

// staring number
int currentNumber = 1;

// running the while loop till it reaches the max limit
while (currentNumber <= limit) {

// checking for fizzbuzz
if (currentNumber % 5 == 0 && currentNumber % 7 == 0) {
System.out.println("FizzBuzz");

// checking for fizz
} else if (currentNumber % 5 == 0) {
System.out.println("Fizz");

// checking for buzz
} else if (currentNumber % 7 == 0 ) {
System.out.println("Buzz");
}  else {
System.out.println(currentNumber);
}

// incrementing the number by 1
currentNumber++;
}
}
}
```

Output:

```1
2
3
4
Fizz
6
Buzz
8
9
Fizz
11
12
13
Buzz
Fizz
16
17
18
19
Fizz
Buzz
22
23
24
Fizz
26
27
Buzz
29
Fizz
31
32
33
34
FizzBuzz
36
37
38
39
Fizz
41
Buzz
43
44
Fizz
46
47
48
Buzz
Fizz
51
52
53
54
Fizz
Buzz
57
58
59
Fizz
61
62
Buzz
64
Fizz
66
67
68
69
FizzBuzz
71
72
73
74
Fizz
76
Buzz
78
79
Fizz
81
82
83
Buzz
Fizz
86
87
88
89
Fizz
Buzz
92
93
94
Fizz
96
97
Buzz
99
Fizz

```

## 3. FizzBuzz Solution in Java 8

We can implemented the solution for FizzBuzz using java 8 stream api as below.

In the below example, we have used ternary operator for condition evaluation.

IntStream.range() is to generate the numbers from 1 to 100

mapToObj(): uses the ternary operator and gets right word.

forEach(): To iterate over the stream and print the values to console.

```public class FizzBuzzExampleJava8 {

public static void main(String[] args) {

// limit the fizz buzz game
int limit = 100;

// staring number
int currentNumber = 1;

// IntStream to generate the numbers range from 1 to 100 and mapToObj() to get the right fizz buzz word.
IntStream.rangeClosed(currentNumber, limit)
.mapToObj(i -> i % 5 == 0 ? (i % 7 == 0 ? "FizzBuzz" : "Fizz") : (i % 7 == 0 ? "Buzz" : i))
.forEach(System.out::println);
}
}
```

This program also produces the same output as in the above section.

## 4. Conclusion

In this article, we have seen how to implement the solution to FizzBuzz problem using java before and after java 8 concepts.

GitHub

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Author: Venkatesh - I love to learn and share the technical stuff.
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JavaProgramTo.com: FizzBuzz Program In Java with examples
FizzBuzz Program In Java with examples
A quick guide to write the java program for FizzBuzz solution in java and new Java 8 stream api.