- #How much performance is different portal and portal 2 how to#
- #How much performance is different portal and portal 2 code#
- #How much performance is different portal and portal 2 zip#
In the example below, encapsulation is demonstrated as an OOP concept in Java. Now that we explained the foundational OOP concepts in Java, let’s look at a few common examples. This means a single method name might work in different ways depending on what arguments are passed to it. In method overloading, a single method may perform different functions depending on the context in which it’s called. That allows a programmer to use one method in different ways depending on whether it’s invoked by an object of the parent class or an object of the child class.
In method overriding, the child class can use the OOP polymorphism concept to override a method of its parent class. Two more examples of polymorphism in Java are method overriding and method overloading. The “horse” class is “polymorphic,” since it inherits attributes of both the “animal” and “professional racing” class. That class might also implement the “professional racing” class. We might create a class called “horse” by extending the “animal” class.
Polymorphism in Java works by using a reference to a parent class to affect an object in the child class. We use the keyword extends to define a new class that inherits properties from an old class. The original class is often called the parent. We call the inheriting class a subclass or a child class. Inheritance is another labor-saving Java OOP concept that works by letting a new class adopt the properties of another.
#How much performance is different portal and portal 2 code#
It also lets us alter our original code without breaking it for others who have adopted it in the meantime. Encapsulation lets us do that while keeping our original data private. It may be useful to reuse that code with other databases or processes. For example, we may create a piece of code that calls specific data from a database. It’s a powerful, time-saving OOP concept in Java. How Encapsulation WorksĮncapsulation lets us reuse functionality without jeopardizing security. The objects, in this case, might be employee addresses, customer addresses or supplier addresses.
#How much performance is different portal and portal 2 zip#
The class might specify that each address object shall have a name, street, city and zip code. Programmers can also create different classes of objects as ways to define the objects.įor instance, a class of variable might be an address. For example, a programmer can create several different types of objects, which can be variables, functions or data structures. How Abstraction WorksĪbstraction lets programmers create useful and reusable tools. OOP concepts in Java work by letting programmers create components that are reusable in different ways while maintaining security. That’s when the values of the supplied variables imply different meanings. That’s when the code itself implies different meanings. One form of polymorphism is method overloading. Allows programmers to use the same word in Java to mean different things in different contexts. Using Inheritance lets us build on previous work without reinventing the wheel. A special feature of Object-Oriented Programming in Java, Inheritance lets programmers create new classes that share some of the attributes of existing classes.
We can then reuse objects like code components or variables without allowing open access to the data system-wide. Encapsulation is a protective barrier that keeps the data and code safe within the class itself. The practice of keeping fields within a class private, then providing access to those fields via public methods. This is important because it lets you avoid repeating the same work multiple times. In Java, abstraction means simple things like objects, classes and variables represent more complex underlying code and data.
#How much performance is different portal and portal 2 how to#
We all know how to turn the TV on, but we don’t need to know how it works in order to enjoy it. Using simple things to represent complexity. Grasping OOP concepts is key to understanding how Java works. Basically, Java OOP concepts let us create working methods and variables, then re-use all or part of them without compromising security. The main ideas behind Java’s Object-Oriented Programming, OOP concepts include abstraction, encapsulation, inheritance and polymorphism.
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