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  1. package de.kaiguenster.javaintro.fibonacci; 
  2.  
  3. public class Fibonacci {
  4.  
  5.     public static int fibonacci(int n) {
  6.         if (n<0)
  7.             throw new IllegalArgumentException("Fibonaccizahlen sind für negativen Index nicht definiert.");
  8.         else if (n == 0)
  9.             return 0;
  10.         else if (n == 1)
  11.             return 1;
  12.         else
  13.             return fibonacci(n - 1) + fibonacci(n - 2);
  14.  
  15.     }
  16.     public static void main(String[] args) {
  17.         if (args.length !=1) {
  18.             System.out.println("Aufrug: java de.kaiguenster.javaintro.fibonacci.Fibonacci <n>");
  19.             System.exit(1);
  20.         }
  21.         int n = Integer.parseInt(args[0]);
  22.         int result = fibonacci(n);
  23.         System.out.println("Die " + n + ". Fibonacci-Zahl ist: " + result);
  24.     }
  25. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:3: error: class Fibonacci is public, should be declared in a file named Fibonacci.java
public class Fibonacci {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/XfrrqE
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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