diff --git a/src/xs_ibdpcompsci_javaintro/math.java b/src/xs_ibdpcompsci_javaintro/math.java
new file mode 100644
index 0000000..c7e7e1a
--- /dev/null
+++ b/src/xs_ibdpcompsci_javaintro/math.java
@@ -0,0 +1,24 @@
+package xs_ibdpcompsci_javaintro;
+
+public class math {
+    public static double add(double[] NUMBERS_RAW) {
+        double SUM = NUMBERS_RAW[0];
+        
+        for (int NUMBER_INDEX = 1; NUMBER_INDEX < NUMBERS_RAW.length; NUMBER_INDEX++) {
+            SUM += NUMBERS_RAW[NUMBER_INDEX];
+        };
+
+        return SUM;
+    };
+
+    public static double add(double NUMBER_RAW_1, double NUMBER_RAW_2) {
+        double SUM = NUMBER_RAW_1 + NUMBER_RAW_2;
+        return SUM;
+    };
+
+    public static void main(String[] args) {
+        double[] TEST_NUMBERS = {1.0, 2.0};
+        System.out.println(add(TEST_NUMBERS));
+        System.out.println(add(1.0, 2.0));
+    }
+}