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Object Inheritance And Polymorphic Class In Java
Object Inheritance and Polymorphic
In all the computer languages that you want to study, you will always encounter object-oriented programming. It's an essential topic and to become a skilled programmer, you must master the concepts behind this topic.
Our object inheritance and polymorphism homework help experts would recommend that you take this topic seriously as it has the capacity to impact on how you advance in your career as a programmer.
What does object-oriented programming mean?
This is a kind of constraint in computer science programming which organizes the program in the form of data structure and refrains us from using functions and logic. It's a very important concept, especially when we have a large program that requires active maintenance. Its importance lies in the sense, that we are able to reuse the different functionalities in the main class over and over again instead of having to rewrite the code all over.
Object-oriented programming is built around data, which in this case, we refer to as objects. Therefore, the first goal of the programmer employing this paradigm is to ensure that all the objects have been identified before he/she can proceed to create the code. There are three main concepts here in object-oriented programming that this article will focus on to help you understand object-oriented programming. These are objects, inheritance, and polymorphism. In this article, we shall use sufficient examples which will make it easy for you to understand these concepts.
Java and object-oriented programming
Java, like many other high-level programming languages, can be referred to as an object-oriented language. This is because it makes use of all the features necessary for an object-oriented programming model. As we will be talking about object inheritance and polymorphism, we will be referring to java at all times.
Objects in java
Wait! We are talking about objects. There is one basic concept that we might have forgotten to include here. Objects always correspond to classes, that is, objects are used with classes in java. Classes are the major building blocks of object-oriented programming. Classes are that which differentiates object-oriented programming from other programming paradigms such as functional programming. An object in this line is referred to as an instance of the class. Or rather, we could define it as a specimen. The class is a blueprint for all variables in the code. Objects normally correspond to real-life attributes and behaviors. Let's say we have the class 'animals'. The objects here are color, sound, or food the animals take.
The name inheritance in English refers to acquiring something from our parents. It could be a traitor an object. This is the part of object-oriented programming which you can relate to real life. And in fact, the same meaning of inheritance is used in object-oriented programming. Normally, such a program must have two classes. One is the parent class and the other one that mimics the parent, which is the child that inherits the traits of the parent. Similar to the case in real life, you can inherit from more than one parent class.
For our example, we can add two other classes. That is the dog class and hyena class. The dog class and the hyena class both are the child class of the animal class and can, therefore, inherit from the parent class attributes such as animal sound and color. If these attributes were present in the parent class.
The name polymorphism is a term that refers to the ability of an object to take many forms or characteristics. A real-life example is your father. He can take forms such as a parent, husband, and employee. This meaning also applies to polymorphism in java. If we translate it to java, it means that a single method in the parent class could have multiple implementations in the child class. It’s rather a confusing topic that many students find it hard to grasp.
To understand it better we should refer back to our analogy of the animal class. Let's say it has the method of animal sound (). This method is applicable to more than one child class. It could be used in the dog class or the cat class.
Polymorphism could be differentiated into two methods -Dynamic polymorphism (overloading) and static polymorphism (overriding).
Overloading refers to a single method that is passed to the child class and behaves differently depending on the arguments that are passed on to it. Overriding, on the other hand, refers to the child class implementing a method of the parent class.
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Client Server Finger program in Java
Modified echo server to work as finger application. Finger allows you to query for a user and to get information about that user. The finger protocol is to use port 79 and simple text transfer.