1 files changed, 17 insertions, 0 deletions
diff --git a/entries/nritschel/fib-java/src/FibonacciCalculatorImpl.java b/entries/nritschel/fib-java/src/FibonacciCalculatorImpl.java
new file mode 100644
index 0000000..7bb5ee9
--- /dev/null
+++ b/entries/nritschel/fib-java/src/FibonacciCalculatorImpl.java
@@ -0,0 +1,17 @@
+public class FibonacciCalculatorImpl implements FibonacciCalculator {
+    private final FibonacciNumberFactory factory;
+
+    public FibonacciCalculatorImpl(FibonacciNumberFactory factory) {
+        this.factory = factory;
+    }
+
+    @Override
+    public int calculateFibonacci(FibonacciNumber fib) {
+        if (fib.getNumber() <= 2) {
+            return 1;
+        }
+        else {
+            return factory.getFibonacciNumber(fib.getNumber() - 1).calculate(this) + factory.getFibonacciNumber(fib.getNumber() - 2).calculate(this);
+        }
+    }
+}