package seedu.address.model.activity;

public abstract class Activity {

}

@@ -43,22 +43,34 @@
 lic 
-abstract class
+class Activity %7B%0A%09%0A%09public
  Act
@@ -74,14 +74,17 @@
 Activity
+()
  %7B
+%7D
 %0A%0A%7D%0A

Add Activity constructor