diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b42b468..4e7af98 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,29 @@
-You can contribute any programs whic can worthy
+//You can contribute any programs whic can worthy
+//Till now, we were always taught “Comments do not Execute”. Let us see today “The comments that execute”
+
+public class Testing { 
+    public static void main(String[] args) 
+     { 
+         // the line below this gives an output 
+         // \u000d System.out.println("comment executed"); 
+     } 
+} 
+
+
+
+public class Demo{ 
+    public static void main(String[] arr){ 
+          
+    } 
+    public static void main(String arr){ 
+          
+    } 
+} 
+
+/*Choices:
+
+a) Nothing
+b) Error
+Answer: a) Nothing
+Reason: We can overload main() too. But JVM will always call main() that has String[] argument.
+*/