Object-oriented programming homework help
What is object-oriented programming?
Object-oriented programming (OOP) is a computer programming model that organizes software design around data, or objects, rather than functions and logic. An object can be defined as a data field that has unique attributes and behavior. OOP focuses on the objects that developers want to manipulate rather than the logic required to manipulate them. This approach to programming is well-suited for programs that are large, complex and actively updated or maintained. This includes programs for manufacturing and design, as well as mobile applications; for example, OOP can be used for manufacturing system simulation software.
The organization of an object-oriented program also makes the method beneficial to collaborative development, where projects are divided into groups. Additional benefits of OOP include code reusability, scalability and efficiency.
The first step when object-oriented programming (OOP) is identifying the items in your program. These items, called objects or data models, are put into collections or classes which describe their attributes and how they relate to each other.
For objects, examples can range from physical entities, such as a human being described by name & address to small computer programs, such as widgets.
Once an object is labeled, it is assigned to a class of objects that defines the type of data it contains and any logic sequences that can manipulate it. Each distinct logic sequence is known as a method. Objects can communicate with well-defined interfaces called messages.
What is the structure of object-oriented programming?
The structure, or building blocks, of object-oriented programming include the following:
Classes are user-defined data types that act as the blueprint for individual objects, attributes and methods.
Objects are instances of a class created with specifically defined data. Objects can correspond to real-world objects or an abstract entity. When class is defined initially, the description is the only object that is defined.
Methods are functions that are defined inside a class that describe the behaviors of an object. Each method contained in class definitions starts with a reference to an instance object. Additionally, the subroutines contained in an object are called instance methods. Programmers use methods for reusability or keeping functionality encapsulated inside one object at a time.
Attributes are defined in the class template and represent the state of an object. Objects will have data stored in the attributes field. Class attributes belong to the class itself.
What are the main principles of OOP?
Object-oriented programming is based on the following principles:
Encapsulation. This principle states that all important information is contained inside an object and only select information is exposed. The implementation and state of each object are privately held inside a defined class. Other objects don’t have the same access to this class, meaning they’re only able to use a predefined list of public functions. This ensures greater security for your program and prevents others from editing data inadvertently.
Abstraction. Objects only reveal internal mechanisms that are relevant for the use of other objects, hiding any unnecessary implementation code. The derived class can have its functionality extended. This concept can help developers more easily make additional changes or additions over time.
Inheritance. Classes can reuse code from other classes. Relationships and subclasses between objects can be assigned, enabling developers to reuse common logic while still maintaining a unique hierarchy. This property of OOP forces a more thorough data analysis, reduces development time and ensures a higher level of accuracy.
Polymorphism. Objects in this program are designed to share behaviors and they can take on more than one form. The program will figure out which meaning or usage is necessary for each execution of that object from a parent class, which will reduce the need to duplicate code. A child class is then created, which extends the functionality of the parent class. Polymorphism allows different types of objects to pass through the same interface.
What are examples of object-oriented programming languages?
Most programming languages today are object-oriented. But not all of them pair well with OOP’s features–it’s easier for many tools to mold themselves around Simula than others, for example. For example, programming languages considered pure OOP languages treat everything as objects. Other programming languages are designed primarily for OOP, but with some procedural processes included.
For example, popular pure OOP languages include:
Programming languages designed primarily for OOP include:
Other programming languages that pair with OOP include:
Visual Basic .NET
What are the benefits of OOP?
Benefits of OOP include:
Modularity. Encapsulation enables objects to be self-contained, making troubleshooting and collaborative development easier.
Reusability. Code can be reused through inheritance, meaning a team does not have to write the same code multiple times.
Productivity. A programmer can create something entirely new much quicker through the use of available libraries and recursive code.
Easily upgradable and scalable. Programmers can implement system functionalities independently.
Interface descriptions. As a result of message passing techniques, descriptions of external systems are simple..
Security. A coding construction called encapsulation that separates the data and the functions that act on it is responsible for making software maintenance easier. And another thing, using abstraction meant to separate implementation details from its responsibilities also protects against security risks..
Flexibility. Polymorphism enables a single function to adapt to the class it is placed in. Different objects can also pass through the same interface.
Criticism of OOP
The object-oriented programming model has been criticized by developers for multiple reasons. The largest concern is that OOP overemphasizes the data component of software development and does not focus enough on computation or algorithms. Additionally, OOP code may be more complicated to write and take longer to compile.
Alternative methods to OOP include:
Functional programming. This includes languages such as Erlang and Scala, which are used for telecommunications and fault tolerant systems.
Structured or modular programming. This includes languages such as PHP and C#.
Imperative programming (e.g., in C or Java) focuses on implementing functions rather than models, and does not include Object-Oriented Programming languages like C++ or Java
Declarative programming is a programming method that involves statements about what the task or desired outcome is but not how to achieve it. Languages include Prolog and Lisp.
Logical programming. This method, which is based mostly in formal logic and uses languages such as Prolog, contains a set of sentences that express facts or rules about a problem domain. It focuses on tasks that can benefit from rule-based logical queries.
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