Java Tutorial - Java Script :
An essential concept of object-oriented programming is the representation of data. In an object-oriented language such as Java, an object represents two things:
· Behavior—The things an object can do
· Attributes—The data that differentiates the object from other objects
Combining behavior and attributes is a departure from other programming languages where a program is defined as a set of instructions that manipulate data. The data is a separate thing, as in word processing software. Most word processors are considered programs used to create and edit text documents Object-oriented programming blurs the line between program and data. An object in a language such as Java encapsulates both instructions (behavior) and data (attributes).
Today, you discover two ways that a Java program can take advantage of this representation:
· Object serialization—The capability to read and write an object using streams
Reflection—The capability of one object to learn details about another object
