Application Development

I have been interested in application development quite a lot and I understand that everything is divided into several main stages and there are also auxiliary sub-items, so to speak, I understand the theory, but how difficult is it in practice?

This is a very time-consuming process and only practical training will take you a lot of time. I am one of those people who believes that everyone should do their own thing, but do it well! For example guys https://exoft.net/java-development-services/ they do a great job for me, and at this time I'm doing my job