Polymorphism means having many forms. The word “poly” means many and “morphs” means forms. In java, it is a concept that allows the user to perform a single action in different ways. Take a real-life example: Consider a man and at …
Data abstraction is the process of hiding the details but only displaying the relevant information to the users, which means hiding the implementation details and displaying only its functionalities. This is one of the main advantages of using abstraction. Abstraction …
Java supports three types of inheritance on the basis of class: single, multilevel, and hierarchical. Whereas multiple and hybrid inheritance is supported through interface only. Types of Inheritance in Java: Single Inheritance Multilevel Inheritance. Hierarchical Inheritance. Multiple Inheritance. Hybrid Inheritance. 1. Single …
Encapsulation is one of the four fundamental OOP concepts. Encapsulation in Java is defined as the wrapping up of data(variable) under a single unit. The use of Encapsulation is to make sure that implementation detail or we can say sensitive data is …
Object-oriented programming: It is the concept of using objects in programming. It is a paradigm that uses objects and classes that aim to implement real-world entities. The entities such as inheritance, abstraction, polymorphism, etc that are used in programming. The main goal …
It is one of the main features of Object-Oriented Programming (OOP). Inheritance is one of the processes or mechanisms in OOP in which one class(sub-class) acquires the properties(data members) and functionalities(methods) of another class(parent-class). Importance of Inheritance: For Code Reusability. For Method …
call by value in Java: If a method is to be called by passing a parameter as a value then it is said to be Call by Value. Here the changes made to the passed parameter do not affect the …
Keywords: Keywords in Java are also known as reserved words, are already defined in Java with a predefined meaning. These words cannot be used with variables or object name. Example of using integer Keyword: List of Keywords used in Java are shown …
Type Casting is assigning a value of one data-type to a variable of another data-type. When a value is assigned to another variable, their types might not be compatible with each other to store that value. For this situation, they need …
What are Data Types in Java? Data types specify the varying sizes and values in the variables that can be stored. That is every variable is assigned by data-types according to the need. And based on their respective data-types, the operating system …