
Curso POO Teoria #01a - O que é Programação Orientada a Objetos
Nessa aula de POO, vamos aprender o que é Programação Orientada a Objetos e quais são as suas principais vantagens em relação a outros tipos de Linguagem de Programação. Gostou da aula? Então torne-se um apoiador do CursoemVídeo acessando o site apoie.me/cursoemvideo Nós do CursoemVideo sempre recomendamos assistir a aula completa, mas se quiser aprender diretamente uma parte específica, clique nos marcadores de tempo a seguir: 0:19 - Qual é o assunto da aula? Aula do Curso de Banco de Dados com MySQL criado pelo professor Gustavo Guanabara para o portal CursoemVideo.com. Curso em Vídeo Site: http://www.cursoemvideo.com YouTube: http://www.youtube.com/cursoemvideo Facebook: http://www.facebook.com/cursosemvideo Twitter: http://twitter.com/cursosemvideo Google+: http://plus.google.com/112666558837414979080 Patrocínio HOSTNET: http://www.hostnet.com.br EDUCANDUS: http://www.sistemaeducandus.com.br GAFANHOTOS: http://apoie.me/cursoemvideo Ask Rufus de Audionautix está licenciada sob uma licença Creative Commons Attribution (https://creativecommons.org/licenses/by/4.0/) Artista: http://audionautix.com/
Curso POO Teoria #01a - O que é Programação Orientada a Objetos
Introduction to the Course
The instructor introduces the course on Object-Oriented Programming and mentions that the video is being recorded at the Google office. He explains that the course will cover programming in PHP and Java.
Course Introduction
- The instructor welcomes the viewers to the Object-Oriented Programming course.
- The course will focus on programming in PHP and Java.
- The video is recorded at the Google office, but the actual lessons will be conducted in a studio.
Prerequisites for the Course
The instructor discusses the prerequisites for this course, emphasizing the importance of having a basic understanding of algorithms. He recommends taking his free algorithm course before starting this one.
Prerequisites
- It is strongly recommended to have knowledge of algorithms before watching this conceptual lesson.
- Viewers who are not familiar with algorithms can access the free algorithm course provided by the instructor.
- Basic knowledge of variables, procedures, and routines is also necessary for understanding object-oriented programming concepts.
Recommended Approach for Learning
The instructor suggests that viewers start with an algorithm course if they are new to programming. He explains that while it's possible to watch this object-oriented programming course without prior knowledge, having a foundation in algorithms will be beneficial. He also mentions that practical lessons in PHP and Java require additional prerequisites.
Recommended Approach
- Start with an algorithm course if you are new to programming.
- Object-oriented programming can be understood without prior knowledge, but familiarity with algorithms is helpful.
- Practical lessons in PHP and Java require additional prerequisites such as completing courses specific to those languages.
Structure of the Course
The instructor explains the structure of the course, which includes theoretical and practical lessons in both PHP and Java. He mentions that each week, three videos will be released: one theoretical lesson and two practical lessons.
Course Structure
- The course consists of theoretical and practical lessons in both PHP and Java.
- Each week, three videos will be released: one theoretical lesson (like the current video) and two practical lessons.
- The practical lessons focus on setting up environments for programming in PHP and Java.
Introduction to Object-Oriented Programming
The instructor introduces object-oriented programming (OOP) by explaining its purpose and why it is gaining popularity in the job market.
Introduction to OOP
- Object-Oriented Programming (OOP) is a programming paradigm that is becoming increasingly popular.
- OOP aims to organize code into reusable objects with properties (attributes) and behaviors (methods).
- The instructor mentions that he will cover the origins of OOP briefly but encourages viewers not to skip this section as it provides important concepts for understanding the rest of the course.
Purpose of Object-Oriented Programming
The instructor discusses the purpose of object-oriented programming (OOP), highlighting its relevance in today's job market.
Purpose of OOP
- OOP serves as a way to organize code into reusable objects with attributes and methods.
- It allows for better code organization, modularity, reusability, and maintainability.
- OOP has gained significant attention in the job market due to its benefits in software development.
These are the main sections covered in this transcript.
Introduction to Object-Oriented Programming
In this section, the speaker introduces the concept of object-oriented programming and its impact on the field of programming. They discuss the evolution of programming languages from low-level to high-level and linear to structured and modular approaches.
Evolution of Programming Paradigms
- In the early days of computing (1940s-1950s), programming was done at a low level using binary instructions.
- High-level languages emerged, allowing for more comprehensible commands, but still limited in functionality.
- Linear programming became popular, where instructions were given from top to bottom without much flexibility or internal routines.
- Structured programming evolved from linear programming, allowing for small chunks of code that could be executed out of order.
- Modular programming further enhanced structured programming by organizing code into protected capsules that could be combined to create larger systems.
Introduction to Object-Oriented Programming
- Object-oriented programming (OOP) is a paradigm that builds upon modular programming and emphasizes data and functionality encapsulation.
- OOP allows for creating objects based on real-world concepts and relationships between them.
- Alan Kay is credited as one of the pioneers who formulated the principles of OOP. He had a background in mathematics, biology, and education.
- Kay's vision was inspired by how cells function in organisms, with each cell working autonomously but collaborating towards a common goal.
- OOP provides a way to model real-world objects using concepts such as classes, objects, inheritance, and polymorphism.
The Beauty of Object-Oriented Programming
In this section, the speaker explains the beauty of object-oriented programming and its ability to explain concepts using real-world objects. They highlight how OOP combines logical reasoning with biological reasoning.
Object-Oriented Programming Concepts
- OOP combines elements of computation and biology, providing a unique perspective on problem-solving.
- Any object can be used to explain OOP concepts, such as a remote control, pencil, or cellphone.
- The concept of OOP was formulated in the 1970s when there was no formal education in computer science.
- OOP allows for creating reusable code through encapsulation, inheritance, and polymorphism.
- The principles of OOP provide a way to organize code and create more maintainable and scalable systems.
Conclusion
In this section, the speaker concludes by summarizing the evolution of programming paradigms and highlighting the benefits of object-oriented programming.
Key Takeaways
- Object-oriented programming evolved from low-level binary instructions to high-level modular code organization.
- OOP allows for modeling real-world objects and their relationships using classes, objects, inheritance, and polymorphism.
- Alan Kay played a significant role in formulating the principles of OOP based on his background in mathematics, biology, and education.
- The beauty of OOP lies in its ability to combine logical reasoning with biological reasoning to solve complex problems.
Timestamps are approximate and may vary depending on the video playback.
Hosting your website with Hostnet
This section discusses the benefits of hosting your website with Hostnet and how it can lead to job opportunities.
Benefits of hosting with Hostnet
- Hostnet is the best place to host your files.
- If you have completed the PHP and HTML courses, you already know about hosting and can take advantage of job opportunities.
- Hostnet offers employment proposals for individuals who can build quality websites.
- Access the Hostnet website and click on "Produtos" (Products) in the top menu to explore their offerings.
Becoming a representative for Hostnet
This section explains how to become a representative for Hostnet and highlights the demand for skilled website builders.
Representing Hostnet
- Visit the hostnet.com.br website.
- Click on "Produtos" (Products) in the top menu.
- Choose "Representante Hostnet" (Hostnet Representative).
- Udinese is looking for people who can build quality websites as clients often need assistance in this area.
- Don't miss out on potential job opportunities, visit the site now!
Educanção de Ensino - Preparatory course for military careers
This section introduces Educanção de Ensino, a preparatory course for military careers, highlighting its success rate and career prospects.
Preparatory course for military careers
- Educanção de Ensino is the largest preparatory course for military careers in Brazil.
- Nearly half of those who complete this course successfully join the Navy or Air Force in technical positions.
- The course has achieved remarkable results, including producing top-ranking students and record-breaking scores in Aeronautics exams.
- If you aspire to pursue a military career without engaging in menial tasks, such as sweeping floors, consider the various opportunities in IT, maintenance, programming, and network security.
- Visit sistemaeducando.com.br to explore their courses.
Supporting the course through sponsorship
This section encourages viewers to support the course by becoming sponsors and highlights the benefits of doing so.
Sponsorship for the video course
- Many viewers are already sponsoring the video course.
- To contribute and help the course grow, visit cursoemvideo.com/apoie (cursoemvideo.com/support).
- Even a small contribution can make a significant impact.
- Currently, there are 124 supporters who have ensured the production of future lessons.
- Your name could be mentioned in upcoming videos with millions of views.
Alan Kay's contributions to technology and education
This section discusses Alan Kay's role in technology and education, including his concepts of interaction and his creation of the Dynabook prototype.
Alan Kay's contributions
- Alan Kay developed various concepts of interaction using computers for educational purposes.
- He worked at Xerox PARC (Palo Alto Research Center), where projects like the mouse, graphical interface, and Ethernet were born.
- The Dynabook prototype was one of his creations. It featured a screen on top and a keyboard below, allowing children to learn through interactive activities such as animations and videos.
- Although this concept was ahead of its time in the 1970s, it laid the foundation for modern tablets and laptops.
- Alan Kay is considered one of the pioneers in notebook development.
Object-oriented programming language - Smalltalk
This section focuses on Smalltalk, which is considered to be the first object-oriented programming language created by Alan Kay.
Smalltalk - First object-oriented programming language
- Smalltalk was developed by Alan Kay's team at Xerox PARC.
- It was the first object-oriented programming language, designed to support dynamic and object-based concepts.
- Smalltalk's creation was driven by the need for a language that could handle changing requirements and treat everything as objects.
- The development of Smalltalk led to the creation of graphical user interfaces and other technologies we use today.
Conclusion
This section concludes the video by emphasizing Alan Kay's significant contributions to technology and how his ideas have shaped modern advancements.
Alan Kay's impact
- Alan Kay's visionary ideas have greatly influenced technology and education.
- His concepts of interaction, such as the Dynabook prototype, laid the foundation for modern devices like tablets and laptops.
- Smalltalk, the first object-oriented programming language he created, revolutionized software development and paved the way for graphical user interfaces.
- Alan Kay's contributions continue to shape our technological landscape.
Alan Kay's Contributions to Object-Oriented Programming
In this section, we learn about Alan Kay's significant contributions to the field of object-oriented programming and his career journey.
Alan Kay's Career Journey
- Alan Kay worked at companies like Xerox, Apple, Disney, and HP.
- He made numerous inventions that revolutionized the industry.
- His work at Xerox PARC and Apple is particularly noteworthy.
Understanding Traditional Programming Approaches
- Traditional programming approaches involved working with structured or modular programming.
- Data was treated as a single mass and processed by procedures.
- Procedures only used the data they needed, leading to a complex and messy code structure.
Introduction to Object-Oriented Programming
- Alan Kay introduced the concept of objects in programming.
- Objects consist of data and methods that operate on that data.
- Methods directly access relevant data within an object, eliminating the need for additional filtering or processing steps.
Advantages of Object-Oriented Programming
- Object-oriented programming simplifies code structure and improves communication between objects.
- Multiple objects can interact with each other through data exchange.
- Popular languages supporting object-oriented programming include C++, Java, PHP, Python, C#, Objective-C.
Advantages of Object-Oriented Programming
This section highlights the main advantages of object-oriented programming.
Six Key Advantages - "Comer Nada"
The six key advantages are represented by the mnemonic "Comer Nada," which stands for:
- Code Reusability: Objects can be reused in different parts of a program.
- Modularity: Code can be divided into smaller, manageable modules.
- Reliability: Object-oriented programs are more reliable and less prone to errors.
- Namespacing: Objects provide a way to organize and encapsulate code.
- Dependency Management: Changes in one object do not affect others, reducing dependencies.
- Abstraction: Objects simplify complex systems by focusing on essential features.
Summary
Alan Kay made significant contributions to object-oriented programming, working at companies like Xerox, Apple, Disney, and HP. Traditional programming approaches involved working with structured or modular programming, which led to complex code structures. Alan Kay introduced the concept of objects in programming, simplifying code structure and improving communication between objects. Object-oriented programming offers advantages such as code reusability, modularity, reliability, namespacing, dependency management, and abstraction. Popular languages supporting object-oriented programming include C++, Java, PHP, Python, C#, Objective-C.
The timestamps provided have been associated with the corresponding sections of the transcript for easy reference during study or review sessions.
Object-Oriented Programming Principles
In this section, the speaker discusses the principles of object-oriented programming and how they offer advantages in software development.
Advantages of Object-Oriented Programming
- The principle of reliability states that objects work together, and if one object is modified, it does not affect the functioning of other objects.
- The principle of opportunity allows for parallel development of different parts of a system. For example, developing a remote control and its battery separately.
- The principle of extensibility enables software to grow and add new functionalities without starting from scratch.
- The principle of maintainability makes it easier to update software with small modifications that benefit all parts using the object.
- The principle of reusability allows for utilizing objects or code from one system in another system, saving time and effort.
- The principle of naturality focuses on making software easy to understand by prioritizing functionality over implementation details.
Choosing a Language for Object-Oriented Programming
- Choose your preferred language (PHP or Java) for learning object-oriented programming.
- Prepare the necessary environment, such as installing a server (e.g., XAMPP for PHP) and an editor (e.g., NetBeans).
The transcript provided does not cover explicit concepts related to object-oriented programming.
Introduction and Course Overview
The instructor introduces the course and provides an overview of the content covered. He encourages viewers to subscribe to the channel for better support and access to future courses.
Course Introduction
- The instructor welcomes viewers to the course on object-oriented programming in PHP and Java.
- Viewers are encouraged to subscribe to the channel for better support and access to future courses.
- The instructor emphasizes the importance of collaboration and thanks all those who have supported the course.
Acknowledging Collaborators
The instructor expresses gratitude towards individuals who have contributed to the course by displaying their names in subsequent lessons.
Acknowledging Collaborators
- The instructor thanks all individuals who have collaborated with him in creating the course.
- He mentions specific names of collaborators from different regions, expressing his sincere appreciation for their support.
- The instructor assures that he will continue acknowledging collaborators in future lessons as well.
Success of the Course
The instructor acknowledges that the course has been successful, with millions of views, attributing this success to viewer participation and support.
Success of the Course
- The instructor expresses his gratitude towards viewers for their help in making the course successful.
- He mentions that millions of people have viewed the course, which wouldn't have been possible without viewer participation.
- The instructor emphasizes that viewer names will continue appearing throughout the entire course as a testament to their value and contribution.
Continuing Acknowledgements
The instructor continues acknowledging additional individuals who have supported and contributed to the course.
Additional Acknowledgements
- The instructor mentions more names of individuals from various regions who have contributed to the course.
- He expresses his gratitude towards these individuals for their support and assistance in making the course possible.
Final Acknowledgements
The instructor concludes by acknowledging the remaining individuals who have supported and contributed to the course.
Final Acknowledgements
- The instructor mentions the names of more individuals from different regions who have contributed to the course.
- He expresses his appreciation for their help in making the course a success.
- The instructor concludes by thanking all collaborators once again for their valuable contributions.
New Section
The instructor mentions that not every student's name will be mentioned in every class, but their names will be recorded and displayed in the courses. The instructor expresses gratitude to the students for their collaboration and encourages them to become contributors by accessing the website.
Introduction
- The instructor acknowledges that not all students' names will be mentioned in every class.
- Students' names will be recorded and displayed in the courses.
- Expresses gratitude to the students for their collaboration.
Becoming a Contributor
- Students who want to become contributors can access the website after "ponto b barcouço em vídeo."
- They can choose a level of contribution and receive quality classes every month.
New Section
The instructor emphasizes the importance of each student's contribution to making the class possible. Acknowledges that the project relies on both sponsors, editors, and students collaborating together.
Importance of Collaboration
- The first class was challenging to produce, so the instructor expresses gratitude towards each student.
- Emphasizes that the project is nothing without them, sponsors, and editors.
- Highlights how each student's collaboration allows others who haven't contributed yet to have access to this class.
New Section
Students are reminded about becoming contributors and accessing quality classes by making monthly contributions through the website.
Reminder for Contributions
- Encourages students who haven't contributed yet to consider becoming collaborators.
- Reminds them to visit "ponto b barcouço em vídeo" website for choosing a level of contribution.
- Assures that they will receive high-quality classes every month as a result of their contributions.