(OOP) represents an attempt to make programs more closely model the way people think
about and deal with the world. In the older styles of programming, a programmer
who is faced with some problem must identify a computing task that needs to be
performed in order to solve the problem. Programming then consists of finding a
sequence of instructions that will accomplish that task. But at the heart of
object-oriented programming, instead of tasks we find objects- entities that
have behaviours, that hold information, and that can interact with one another.
Programming consists of designing a set of objects that model the problem at
hand. Software objects in the program can represent real or abstract entities
in the problem domain. This is supposed to make the design of the program more
natural and hence easier to get right and easier to understand.
An
object-oriented programming language such as JAVA includes a number of features
that make it very different from a standard language. In order to make
effective use of those features, you have to “orient” your thinking correctly.
