Ilias Tsagklis

About Ilias Tsagklis

Ilias Tsagklis is a senior software engineer working in the telecom domain. He is an applications developer in a wide variety of applications/services. Ilias is co-founder and Executive Editor at Java Code Geeks.

Calculate Fibonacci Series with for loop

In this example we shall show you how to calculate Fibonacci series using a for loop in Java. To calculate Fibonacci series with for loop one should perform the following steps:

  • Create a long array with the numbers to be calculated.
  • Create a for statement where the Fibonacci numbers are calculated and stored in the array.
  • Then in another for statement print the array numbers,

as described in the code snippet below.  

package com.javacodegeeks.snippets.basics;

public class FibonacciForLoopExample {

	public static void main(String[] args) {

		int max = 10;

		long[] series = new long[max];

		// create first 2 numbers
		series[0] = 0;
		series[1] = 1;

		// calculate the Fibonacci numbers and store them
		for (int i = 2; i < max; i++) {
			series[i] = series[i - 1] + series[i - 2];

		System.out.println("Fibonacci Series for " + max);
		for (int i = 0; i < max; i++) {
			System.out.print(series[i] + " ");




Fibonacci Series for 10
0 1 1 2 3 5 8 13 21 34 

This was an example of how to calculate Fibonacci series using a for loop in Java.

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