you will walk through object-oriented programming by example; learning to use a simple object, examining the definition, extending the definition, and then designing your own object.

Java is based on the concept of object-oriented programming. As the name suggests, at the center of it all is an object. Objects contain both data and the functionality that operates on that data. This is controlled by the following four paradigms.

his book is an introduction to object-oriented programming using the Java programming language. We use the object-first approach where objects are used from the first sample program. Object-oriented thinking is emphasized and pro-moted from the beginning. Students learn how to use objects first and then learn how to define their own objects.

Constructing and Initializing Objects 1) Memory is allocated for the object 2) Explicit attribute initialization is performed 3) A constructor is executed 4) The object reference is returned by the new operator 5)The reference is assigned to a variable MyDate date1 = new MyDate(20, 6, 2000); new MyDate(20, 6, 2000); date1 = object reference

• OOP uses an approach of treating a real world agent as an object. • Object-oriented programming organizes a program around its data (that is, objects) and a set of well-defined interfaces to that data. • An object-oriented program can be characterized as data controlling access to code by switching the controlling entity to data.

• Explain what Object Oriented Programming is, • Describe the benefits of the Object Oriented programming approach and • Understand and the basic concepts of abstraction, encapsulation, generalisation and polymorphism on which object oriented programming relies.

object is defined by a set of methods (functions), which may access or manipulate the state. Book is a special method, called the constructor of the class; used to create and initialize instances (objects). constructor is a special method which initializes an object immediately upon creation.

i Contents 1 The Context of Software Development 1 1.1 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

(r22a0507) object oriented programming through java COURSE OBJECTIVES: The objective of this course is to provide object oriented concepts through which robust,

Feb 9, 2021 · •An object is a bundle of state and behavior •State –the data contained in the object –Stored in the fields of the object •Behavior –the actions supported by the object –Provided by methods •Method is just OO-speak for function •Invoke a method = call a function