Why there is no "this" keyword in getter methods?

Question

Inside setter methods we use "this" keyword to access the class property, why we don't use it getter methods too ? or opposite?

Answer 1

because usually the given parameter name is the same as the class variable

so 'this' is used to identify which of them belong to the class and which one was passed to the method

by default, if no other value has the same name, then it will identify the class variable so there is no need for it

it is a good practice tho to use 'this' to prevent mishaps

Answer 2

this works only when it is clear which object it is. you can use it when point the object itself outside it it is not clear.

Answer 3

"this" is refering to the reference of the current class/interface
there will be some case that you need to specify which variable/method/function you called from
the simplest example is on encapsulation, when you declare a setter getter of a variable

public class Example{
private int number;

public vois setNumber(int number){
this.number = number;
//this is refering to Example's number because this method also has a variable named number too
}
}

another case when you want to store the reference of your current class to a variable, like this

public claas Example{
private Example instance;

public Example(){
instance = this;
}

}

the conculision is, this is refering to the instance of current clasa/interface