diff --git a/Java Classes & Interfaces/New Calc Engine/src/MathOperation.java b/Java Classes & Interfaces/New Calc Engine/src/MathOperation.java
new file mode 100644
index 0000000..3c45c4a
--- /dev/null
+++ b/Java Classes & Interfaces/New Calc Engine/src/MathOperation.java	
@@ -0,0 +1,6 @@
+public enum MathOperation {
+    ADD,
+    SUBTRACT, 
+    DIVIDE,
+    MULTIPLY
+}
\ No newline at end of file