Question

Differentiate between methods with return type void and int.

Answer 1

Feature	Method with void Return Type	Method with int Return Type
Core Meaning	The method performs an action but does not send back any data to the caller.	The method performs a calculation and must send back a whole number to the caller.
Return Keyword Syntax	Keyword Syntax The return; statement is optional and is only used to exit the method early.	A statement is mandatory at the end of the method execution paths.
Variable Assignment	Its output cannot be assigned to any variable (e.g., int x = obj.printMessage(); causes a compile error).	Its output can be captured and saved directly into an integer variable (e.g., int result = obj.calculateSum();).
Common Use Case	Used for printing information, updating states, or clearing data (e.g., System.out.println()).	Used for mathematical operations, counting elements, or getting array sizes (e.g., Math.abs()).