Classes and Objects

Introduction To Java Programming

What is OOP? ,[object Object],[object Object],[object Object],[object Object]

The Three OOP Principles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

History of Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

History of Java (continued..) ,[object Object],[object Object],[object Object]

Comparing C++ and Java ,[object Object],[object Object],[object Object],[object Object],[object Object]

Comparing C++ and Java (continued..) ,[object Object],[object Object],[object Object],[object Object]

What is Java? ,[object Object],[object Object]

Java isn't C! ,[object Object],[object Object],[object Object],[object Object],[object Object]

Java Virtual Machine ,[object Object],[object Object],[object Object]

Java Virtual Machine (contonued..) ,[object Object],[object Object],[object Object]

Compiling and Executing A Java Program ,[object Object],[object Object],[object Object],[object Object]

Java Features ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Types Of Java Programs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Automatic garbage collection ,[object Object],[object Object]

Automatic garbage collection (continued..) ,[object Object],[object Object],[object Object],[object Object]

Java as a General Application Language ,[object Object],[object Object],[object Object],[object Object]

Anatomy of a Java Program ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java Comments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Packages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Packages (continued..) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Import Statement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Import Statement (continued..) ,[object Object],[object Object],[object Object]

Reserved Words ,[object Object],[object Object]

Reserved Words.. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Statements ,[object Object],[object Object],[object Object]

Classes ,[object Object],[object Object],[object Object],[object Object]

What is a class? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

So, what is a class? ,[object Object],[object Object],[object Object],[object Object],[object Object]

The class hierarchy ,[object Object],[object Object],[object Object],[object Object],[object Object]

UML Representation of A Class Class name Field values Class name Method signatures : name, argument types, result type Field signatures : type and name

An example of a class ,[object Object],[object Object],[object Object],Variable Method

Creating and using an object ,[object Object],[object Object]

Scope of Objects ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Methods ,[object Object],[object Object],[object Object],[object Object],[object Object]

main Method ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Static Members ,[object Object],[object Object],[object Object],[object Object]

Static Members ,[object Object],[object Object]

Some Java OO Terminology ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Some Java OO Terminology (Continued..) ,[object Object],[object Object],[object Object],[object Object]

Visibility Modifiers ,[object Object],[object Object],[object Object],[object Object]

Visibility Modifiers (continued..) ,[object Object],No No No Yes Non-subclass in different package No No Yes Yes Subclass in different package No Yes Yes Yes Class in same package Yes Yes Yes Yes Same class private package protected public MEMBER VISIBILITY ACCESSIBLE TO

Data Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java Operators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java Operators (continued..) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java Literals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java Literals (continued..) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Wrapper Classes for Primitive Types ,[object Object],[object Object],[object Object]

Naming conventions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Type Conversion and Casting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Type Conversion and Casting (Continued..) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Automatic Type Promotion in Expressions ,[object Object],[object Object],[object Object],[object Object]

Array Creation and Initialization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

An array is an object ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Array (continued..) ,[object Object]

Java Control Statements ,[object Object],[object Object],[object Object],[object Object]

Java Control Statements (continued..)

Classes and Objects

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Classes and Objects