initial commit

.gitignore

+
+*.class
+
+# IntelliJ
+/.idea
+/out
+*.iml

src/de/hftstuttgart/ip2/Calculator.java

+package de.hftstuttgart.ip2;
+
+public class Calculator
+{
+    public double add(double a, double b) {
+        return a + b;
+    }
+
+    public double sub(double a, double b) {
+        return a - b;
+    }
+
+    public double mult(double a, double b) {
+        return a * b;
+    }
+
+    public double div(double a, double b) {
+        return a * b;
+    }
+
+    public double sum(double... numbers) {
+        CalculatorHelper calculatorHelper = new CalculatorHelper();
+        return calculatorHelper.sum(numbers);
+    }
+
+}

src/de/hftstuttgart/ip2/CalculatorHelper.java

+package de.hftstuttgart.ip2;
+
+import java.util.Arrays;
+
+public class CalculatorHelper
+{
+    public double sum(double... numbers) {
+        return Arrays.stream(numbers).sum();
+    }
+}

src/de/hftstuttgart/ip2/NotCompilable.java

+package de.hftstuttgart.ip2;
+
+public class NotCompilable
+{
+    int a = 5
+}