Basic concepts in Java



What is Java?
Java is a programming language and a computing platform used for application development.It is one of the most commonly used programming languages.

What is Java platform?
Java platform is a collection of programs that help to develope & run programs in the Java programming language. Java platform includes an execution engine, a compiler, and a number of libraries. JAVA is a platform-independent language. It is not specific to any processor or operating system.

Object-oriented programming (OOPs) concept in Java

Object-oriented programming: as the name implies, Object-Oriented Programming or OOPs refers to languages that use objects in programming. Object-oriented programming aims to real-world entities, such as inheritance, to hide, to implement polymorphism, etc. in the programming. The main goal of OOP is that data and functions that operate on them, so that no other part of the code to access this data except this feature.






OOPs Concepts:
• Polymorphism
• Inheritance
• Encapsulation
• Abstraction
• Class
• Object
• Method

Polymorphism: polymorphism refers to the ability of OOPs programming languages to distinguish efficiently between entities of the same name. This is done by Java using the signature and declaration of these entities.

Inheritance: inheritance is an important pillar of OOP (object oriented programming). It is the mechanism in java that allows a class to inherit the functions(fields and methods) of another class.

Encapsulation: encapsulation is defined as wrapping of data under a single unit. It is the mechanism that binds code and data that it manipulates.Another way to think about encapsulation is that it is a shield that prevents the data from being accessed by the code outside of this shield.
Abstraction: data abstraction is the property by which only the essential details are displayed to the user.The trivial or non-essential units are not displayed to the user

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