Is it bad practice to have my getter method change the stored value?

Question

Is it bad practice to change my getter method like version 2 in my class.

Version 1:

 public String getMyValue(){
     return this.myValue
 }
         


        

Answer 1

A setter could modify as part of validation, but a getter should return the value and let the validation be done by the caller. If you do validate, then how should be documented.