is setter method is always void? can't we make it int type and return?

Answer 1

Conventionally, setters should not return a value. Therefore, it needs to be a void method, because you're not returning anything from it (just initializing the instance variables).

Getters, on the other hand, does return a value.

Answer 2

but is it necessary to write void

Answer 3

There's no point, the whole idea of a setter is to set a variable value

Answer 4

No, setters are like any other function they just have a fancy name