FizzBuzz (the Classic Practice Problem)

This lesson covers solving FizzBuzz, a classic practice problem, in Java, so you build the basics of combining a condition with a loop. It's for anyone searching "Java FizzBuzz implementation."

FizzBuzz is a classic beginner-programming problem. Print numbers starting from 1, but print "Fizz" for a multiple of 3, "Buzz" for a multiple of 5, and "FizzBuzz" for a multiple of both. It's perfect practice for conditionals.

The example loops from 1 to 15, checking i % 15 == 0 first to prioritize multiples of 15, followed by checks for multiples of 3 and 5. The order of these checks is exactly what determines the correct result.

A common early mistake is the order of checks. Check multiples of 3 and 5 first, and a multiple of 15 would only print "Fizz" instead of "FizzBuzz" — you need to check the more restrictive condition first.

Simple as it looks, getting the order of conditions wrong breaks it, which is why it's a common basic-skills check in interviews and training. It's also a great exercise for practicing the modulo operator (%) and conditional logic.