Session 4 - Objects and Classes

Jul 31, 2025

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Session 4 - Objects and Classes

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Classes and Objects

Classes and Objects. const (Constant) Objects and const Member Functions. Principle of least privilege Only give objects permissions they need, no more Keyword const Specify that an object is not modifiable Any attempt to modify the object is a syntax error Example

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Classes and Objects

Classes and Objects. Introduction. Object-oriented programming (OOP) Encapsulation : encapsulates data (attributes) and functions (behavior) into packages called classes Information hiding : implementation details are hidden within the classes themselves Classes

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Classes and Objects

Classes and Objects. Per Brand. What is a Class?. A Class in Oz is a chunk (abstract data-type) that contains : A collection of methods in a method table. A description of the attributes that each instance of the class will possess.

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Objects and Classes

Objects and Classes. Creating Objects and Object Reference Variables Differences between primitive data type and object type Constructors Modifiers ( public , private and static ) Instance and Class Variables and Methods Scope of Variables Use the this Keyword. Class Concept.

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Classes and Objects

Classes and Objects. Topics. The Class Definition Declaring Instance Member Variables Writing Instance Member Methods Creating Objects Sending Messages to Objects Constructors Static Data and Static Methods. Objectives. At the completion of this topic, students should be able to:.

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Classes and Objects

Classes and Objects. What is “Design”?. The parts of the software including what information each part holds what things each part can do how the various parts interact. Why do We Care About Design?. As system grows larger helps us understand the software we are about to build

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Classes and Objects

Classes and Objects. Object vs. Class. A class could be considered as a set of objects having the same characteristics and behavior . An object is an instance of a class . ClassName. att 1 : dataType 1 … att i : dataType i. Attributes. Methods (Services).

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classes and objects

classes and objects. http://www.youtube.com/watch?v=L57-vQvo34E. OOP in python. python was built as a procedural language as a result, python’s OOP feels tacked-on when compared to java. defining a class. class name is capitalized saved into file name.py (lowercase). class Name :

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Classes and Objects

Classes and Objects. You will learn how to define new types of variables. Some Drawbacks Of Using A List. Which field contains what type of information? This isn’t immediately clear from looking at the program statements. client = [“xxxxxxxxxxxxxxx", “0000000000",

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Classes and objects

Classes and objects. Practice 2. Basic terms. Classifier is an element of the model, which specifies some general features for a set of objects. Features of the classifier can be behavioural, structural or connection.

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Objects and Classes

Objects and Classes. David Walker CS 320. Advanced Languages. advanced programming features ML data types, exceptions, modules, objects, concurrency, ... fun to use, but require special techniques to compile and optimize

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Objects and Classes

Objects and Classes. Object-oriented programming (OOP) revolves around Defining classes Creating instances of classes (objects) and interacting with the objects through message passing This paradigm differs from traditional procedural programming where you have

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Objects and Classes

Objects and Classes. Plan for Today - we will learn about: the difference between objects and primitive values how to create (or construct ) objects some specific types of objects: Strings Scanner objects Random objects. Using and Creating Objects. We already know about:

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Classes and Objects

Classes and Objects. Key Idea. Classes and Objects. Class: describes the form of an object, a template or blueprint or mold specifies data representation, behavior, and inheritance (via variables, methods and parents). Object:

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Classes and Objects

Classes and Objects. CMSC 202. Programming & Abstraction. All programming languages provide some form of abstraction . Also called information hiding Separates code use from code implementation Procedural Programming Data Abstraction: using data structures

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Objects and Classes

Objects and Classes. OO Programming Concepts.

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Objects and Classes

Objects and Classes. First Programming Concepts. Fundamental C oncepts. object class method parameter data type. Objects and C lasses. O bjects represent ‘things’ from the real world, or from some problem domain (example: “the red car down there in the car park”) Classes

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Objects and Classes

Objects and Classes. Review: Objects. In Java and other Object-Oriented Programming (OOP) languages, the focus is on objects Objects are program modules that can do actions or be acted upon by other objects All objects have Properties These are the data about an object

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Classes and Objects

Classes and Objects. Objectives of this session. Structures in C and its limitations Specifying a Class Creating Objects Accessing Class Members Defining Member Functions Making an outside Function Inline Nesting of Member Functions Private Member Functions. Introduction.

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Classes and objects

Classes and objects. Readings: 8.1. Recall: Objects and classes. object: An entity that contains data and behavior. We group objects into classes . class: Basic building block of Java programs or Category or type of object

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