Java — Side Effect Methods. Good, Bad and Ugly

pc : https://unsplash.com/photos/A1HC8M5DCQc

Lexicon :

Effect, noun — a change which is a result or consequence of an action or other cause

Side, verb — support or oppose in a conflict, dispute, or debate

Side effect, noun — a secondary, typically undesirable effect

Java methods are blocks of code that can be invoked to execute particular action/logic at a high level. The required elements of a method are the method’s return type, name, a pair of parentheses, (), and a body between braces, {}

https://docs.oracle.com/javase/tutorial/java/javaOO/methods.html

A method can take parameters to be used for the logic in the method. Different invocations can pass different arguments to the method leading to different outcomes.

Assumption : Reader is aware of “passing mechanism in java”

A side effect method is a method which modifies some state variable value/arguments passed having a consequence beyond its scope, that is to say it has an observable effect besides returning a value (the main effect) to the invoker of the operation. In simpler terms, a method can take arguments and run some logic and return a value or not return anything.