The best explanation of Abstraction is using the common example of sending SMS. When a user send SMS, he simply enter the address, type message in the text box and send it. He doesn’t know what is happening behind the scene when this message is getting send to the other user. So her...
In Java,abstractioncaptures only those details about a class that are relevant to the current context.For example, ajava.util.Mapstores key-value pairs and exposes two methodsget()andput()to store and retrieve key-value pairs. This is, in fact, the only information we need if we want to...
2.2 Interface in Java 3. Abstraction example 4. Abstraction vs Encapsulation 5. Conclusion 1. Introduction Abstraction is a concept of exposing only essential details and hiding implementation details. It is one of the essential OOPs concept apart from encapsulation, inheritance and polymorphism. Abstra...
Example of Encapsulation in Javaclass Person { private String name; private int age; // Getter method for name public String getName() { return name; } // Setter method for name public void setName(String name) { this.name = name; } // Getter method for age public int getAge() {...
jay + 2 Abstraction is the process of hiding the implementation details and showing only functionality to the user. And in java abstraction can be achieved using Abstract class and Interface. 14th Jun 2017, 3:21 AM Da' BO$$ + 1 data types. both built-in as well as user defined. ...
Let's convert the Animal class we used in the Polymorphism chapter to an abstract class:Remember from the Inheritance chapter that we use the extends keyword to inherit from a class.ExampleGet your own Java Server // Abstract class abstract class Animal { // Abstract method (does not have ...
Example: //Abstract classabstractclassAnimal {//Abstract method (does not have a body)publicabstractvoidanimalSound();//Regular methodpublicvoidsleep() {System.out.println("Zzz");} }//Subclass (inherit from Animal)classPigextendsAnimal{publicvoidanimalSound() {//The body of animalSound() is ...
In this example,Animalis an abstract class with an abstract methodmakeSound(). TheDogclass extendsAnimaland provides an implementation formakeSound(). Thesleep()method is a concrete method in the abstract class that can be used by subclasses. ...
Java 中的抽象 数据抽象是一种仅向用户显示基本细节的属性。不重要或非必要的单元不会显示给用户。例如:汽车被视为一辆汽车,而不是其各个部件。数据抽象也可以定义为仅识别对象所需特征而忽略不相关细节的过程。对象的属性和行为将其与类似类型的其他对象区分开来,并且还有助于对对象进行分类/分组。
In short, from OOP perspective, we can say that: Abstraction is more about ‘What‘ a class can do. [Idea] Encapsulation is more about ‘How‘ to achieve that functionality. [Implementation] Take the example of the well-known classHashMap. TheHashMapclass is responsible for storing key-val...