Slog

Today, I just know that we have to write our blog every week, I know I start to write it now is too late. I feel very upset about this. I know I do very bad on this course. I had try to ask my classmates to teach me before,  I had been think this slog is only for us to post something what we know, on three week( week3, week7, and before end of term)

    Object-Oriented Programming is a programming languages different than old proceddural programming languages( C, pascal, etc.) In OOP, there have four main cpncepts: objects, class, inheritance, interface. First, "objects" is an  instance of a class, it can be considered a thing in an activites. Second, "class" is representation of a type of object. Third, "inheritance" is the ability of a new class to be created, from an existing class by extending it. Last, "interface" is a contract between a class and the outside world.  When we learning this, we had to understand the concept and purpose, it can let us easy to application.