Being a software developer you can be sure of one thing - that sooner or later (or rather sooner) you will face refactoring of the code - half the trouble if at least written by you and not someone else :) This process always requires some effort and is error-prone. It turns out, however, that you can help yourself with the functions contained in the IDE to minimize both of the above factors and get through the whole operation unscathed. During the presentation, I will show on several examples how to change the code for the better, dropping the dirty work on IntelliJ. You are invited !