Site icon DED9

What is Java?Definition and Java Platforms

programming

What is Java?

Java is a general-purpose, class-based, object-oriented programming language designed for having lesser implementation dependencies. In addition It is a computing platform for application development. Java is fast, secure, and reliable, therefore. It is widely use for developing Java applications in laptops, data centers, game consoles, scientific supercomputers, cell phones, etc.

What is Java Platform?

Java Platform is a collection of programs that help programmers to develop and run Java programming applications efficiently. In addition It includes an execution engine, a compiler, and a set of libraries in it. It is a set of computer software and specifications. James Gosling developed the Java platform at Sun Microsystems, and the Oracle Corporation later acquired it.

Java Definition and Meaning

Java is a multi-platform, object-oriented, and network-centric language. It is among the most used programming language. Java is also use as a computing platform.

Also It is considered as one of the fast, secure, and reliable programming languages preferred by most organizations to build their projects.

What is Java used for?

So Here are some important Java applications:

History of Java Programming Language

Here are important landmarks from the history of the Java language:

Java Versions

Here are a brief history of all the Java versions with its release date.

Java Versions Release Date
JDK Alpha and Beta 1995
JDK 1.0 23rd Jan 1996
JDK 1.1 19th Feb 1997
J2SE 1.2 8th Dec 1998
J2SE 1.3 8th May 2000
J2SE 1.4 6th Feb 2002
J2SE 5.0 30th Sep 2004
Java SE 6 11th Dec 2006
Java SE 7 28th July 2011
Java SE 8 18th Mar 2014
Java SE 9 21st Sep 2017
Java SE 10 20th Mar 2018
JAVA SE 11 25th Sep 2018
JAVA SE 12 19th Mar 2019
JAVA SE 13 17th Sep 2019
JAVA SE 14 17th Mar 2020
JAVA SE 15 15th Sep 2020 (latest Java Version)

Java Features

So Here are some important Java features:

Components Of Java Programming Language

A Java Programmer writes a program in a human-readable language called Source Code. Therefore, the CPU or Chips never understand the source code written in any programming language.

These computers or chips understand only one thing, which is called machine language or code. So These machine codes run at the CPU level. Therefore, it would be different machine codes for other models of CPU.

However, you need to worry about the machine code, as programming is all about the source code. So the machine understands this source code and translates them into machine understandable code, which is an executable code.

All these functionalities happen inside the following 3 Java platform components:

 What is Java Development kit (JDK)

JDK is a software development environment used for making applets and Java applications. Also The full form of JDK is Java Development Kit. Java developers can use it on Windows, macOS, Solaris, and Linux. JDK helps them to code and run Java programs. It is possible to install more than one JDK version on the same computer.

Why using JDK?

Here are the main reasons for using JDK:

Java Virtual Machine (JVM):

So Java Virtual Machine (JVM) is an engine that provides a runtime environment to drive the Java Code or applications. It converts Java bytecode into machine language. JVM is a part of the Java Run Environment (JRE). In other programming languages, the compiler produces machine code for a particular system. However, the Java compiler produces code for a Virtual Machine known as Java Virtual Machine.

Why JVM?

Here are the important reasons of using JVM:

Java Runtime Environment (JRE)

JRE is a piece of software that is designed to run other software. It contains the class libraries, loader class, and JVM. In simple terms, if you want to run a Java program, you need JRE. If you are not a programmer, you don’t need to install JDK, but just JRE to run Java programs.

Why use JRE?

Here are the main reasons of using JRE:

Different Types of Java Platforms

There are four different types of Java programing language platforms:

1. Java Platform, Standard Edition (Java SE): Java SE’s API offers the Java programming language’s core functionality. For example It defines all the basis of type and object to high-level classes. It is used for networking, security, database access, graphical user interface (GUI) development, and XML parsing.

2. Java Platform, Enterprise Edition (Java EE): The Java EE platform offers an API and runtime environment for developing and running highly scalable, large-scale, multi-tiered, reliable, and secure network applications.

3. Java Programming Language Platform, Micro Edition (Java ME): The Java ME platform offers an API and a small-footprint virtual machine running Java programming language applications on small devices, like mobile phones.

4. Java FX: JavaFX is a platform for developing rich internet applications using a lightweight user-interface API. So It user hardware-accelerated graphics and media engines that help Java take advantage of higher-performance clients and a modern look-and-feel and high-level APIs for connecting to networked data sources.

So To understand Java programming language, we need to understand some basic concept of how a computer program can run a command and execute the action.

The future of Java

Java was originally developed and supported by Sun Microsystems and is now supported by Oracle. However, Java is open source and has a worldwide community invested in guiding its continued development and growth. The use cases for Java may change over the years, but its focus and mantra have persisted: write once, run anywhere.

 

Exit mobile version