Basic concepts in Java

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Basic concepts in Java
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• INDEX
• What is Java?
• What is Java platform?
• OOPs Concepts
• Polymorphism
• Inheritance
• Encapsulation
• Abstraction
• Class
• Object
• Method

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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-independen
t language. It is not specific to any processor
or operating system.
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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.
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OOPs Concepts Polymorphism Inheritance
Encapsulation Abstraction Class Object
Method
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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.
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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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