I work as a software developer since many years. I worked with many structured programming languages and I understand the structured way of programming very well (things like loops, conditionals, variables, arrays, functions are a peace of cake for me).
However object oriented programming is becoming nowadays increasingly important. I just have to learn it. I skimmed a few books and tutorials about JAVA. And I understand what are objects, classes, constructors...
I like to learn by practice. So I installed eclipse, and decided to write a Car Rental Software.
I coded a few things, for example used JDBC to connect to MySQL DB, create tables, insert data to tables, select data... Created Classes that represent objects from DB and Methods that calculate penalties when someone returns car too late, etc.
However I have a problem, I don't understand the concept of OOP good enough. I don't know how many files with classes and how many different packages to create, and how to name them.
I could write all code in one file, or create a few files... And I'm sure it would work, but it would be another structured code. And I want to create OOP code.
OOP is very important for me because I understand how powerful it can be. For example encapsulation gives amazing possibilities.
Now back to the question...
Short spec - Car Rental Software
- add/edit/delete vehicles
- add/edit/delete users
- vehicle reservation
- calculate penalties
- I want to use JDBC with MySQL
- GUI maybe SWT
How to divide the program to packages and classes?
How many packages would you create, how would you name them?
How many .java files with classes would you create? How would you name them? In what packages would you place them?
What methods would you create and in which classes?
From what resources could I learn the optimal way of naming classes and packages? I would be happy to check out a few projects with a top notch class, and packages structure...
Ps. I'm not asking how to code it (it's simple... JDBC + a few inserts, selects, methods to create reservation, penalties, GUI ). The problem is how to create the optimal OOP structure of the project...
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