java introduction and history concepts .pdf

Introduction of the Java and history

1. Java:
Introduction
and History
Created by
M. Shahideen

2. Introduction to Java
Overview of Java
Significance in
Programming World Key Features
Java is a widely-used
programming language known
for its portability, security, and
robust performance. It is an
object-oriented language that
forms the basis of many
applications and platforms
across different industries.
Java's significance lies in its
ability to write code once and
run it on any platform that
supports Java. This versatility has
made Java a popular choice for
developing enterprise-level
applications, web and mobile
applications, and embedded
systems.
Java's key features include
platform independence,
automatic memory
management, and strong
community support. These
features contribute to Java's
durability and adaptability in the
constantly evolving
programming landscape.

3. History of Java
Origins of Java Evolution of Java Widespread Adoption
Java was developed by James
Gosling and his team at Sun
Microsystems in the early 1990s.
It was initially designed for
interactive television, but its
potential for internet
applications led to significant
modifications.
Java's evolution took place
through regular updates and
releases, introducing new
language features, enhanced
security, and improved
performance. The language has
maintained its relevance through
continuous innovation and
community-driven development.
Due to its robustness and
compatibility, Java gained
widespread adoption, becoming
a fundamental component of
enterprise systems, mobile
devices, and web applications.
Its open-source implementation,
OpenJDK, further expanded its
reach.

4. OOPs Concepts in
Java
Encapsulation
Encapsulation in Java refers to
the bundling of data (attributes)
and methods that manipulate
the data into a single unit. It
enhances data security and
allows controlled access to the
data, preventing unintended
modifications.
Inheritance enables a new class
to acquire the properties and
behaviors of an existing class,
promoting code reusability and
hierarchical organization.
Polymorphism allows objects to
be treated as instances of their
parent class, facilitating dynamic
method invocation and
flexibility.
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Inheritance and
Polymorphism

5. Encapsulation
Encapsulation in Java
Encapsulation is a fundamental concept in Java that
ensures data security and safeguards the integrity of
objects. By enclosing data within a class and providing
controlled access through methods, encapsulation
promotes a modular and secure programming approach.
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6. Inheritance
Inheritance in Java
Inheritance allows the creation of a new class based on an
existing class, enabling the new class to inherit the
properties and behaviors of the parent class. This
promotes code reusability, hierarchical organization, and
the implementation of related features in a more efficient
manner.
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7. Polymorphism
Polymorphism in Java
Polymorphism allows objects to be treated as instances of
their parent class, providing flexibility in designing and
implementing systems. It enables the use of generic code
to operate on objects of different types, contributing to
extensible and adaptable software solutions.
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