Day 16. Serializing and Examining Objects

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, such as how word processing software is considered to be a program that creates and edits text documents. The data is separate from the software that manipulates it.

Object-oriented programming blurs the line between program and data. An object in a ...

Get Sams Teach Yourself Java in 21 Days, Sixth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.