Java

 What is Java?

Java is a programming language that was created by a team lead by James Gosling in 1995 for Sun Microsystems. 

Java is a platform independent programming language that follows the logics of "Write once, Run anywhere".

History of Java

Java 1.0 Oak - January 1996

Java 1.1 - February 1997

Java 1.2 Playground - December 1998

Java 1.3 Kestrel - May 2000

Java 1.4 Merlin - February 2002

Java 5 Tiger - September 2004

Java 6 Mustang - December 2006

Java 7 Dolphin - July 2011

Java 8 - March 2014

Java 9 - September 2017

Java 10 - March 2018

Java 11 - Upcoming Java Version

Let's look at the history of java version now the first version of Java again was released in early 1996 and it was called oak at that time but then again was completely renamed to Java because o width favorability.

Now throughout the years till 2018 you have tenth version of Java that were released and the next version Java 11 is also going to be released in 2021. Now, there was lot of progress that happened throughout the different versions of Java but we are not going to go in depth with respect to that so what we are going to do now is we're going to address the biggest question that all of you may have that is where is Java being used ?

Where is Java used?

Now to help you understand this I'm going to discuss one of the most popular domain as well as one of the key factors which led to high demand of Java developers and that domain is the Android term. Now, we are all familiar with Android (it is an operating system that was releaded by Google) but how many of you know that the Android applications as well as the Android operating system in itself make extensive use of Java as part of it now even the Android operating systems are built using core Java and still now use the various KPIs that Java has to offer again when you see with respect to the various Android applications they are completely written using Java as their programming language.

Now, to give you even a broader perspective I have just selected eight of the most influenced domain by Java now don't misunderstand that these 

are the only domains which used other Java is used pretty much everywhere starting from your phone to your setup box to satellites as well as. 

Now, we discussed about each of these domains and how they make use of Java.

To start off let's talk over the most popular and trending technology presently that is the Big Data technology. Now here as of most of you would have heard Hadoop is the most preferred framework 

Now, Hadoop framework extensively developed using Java and still makes use of various Java API as part of its features you even have a key concept of MapReduce that you're going to be using and the big data domain. 

Then comes the stock market domain now here the algorithms which help you understand which stock to buy are designed using Java the applications in itself that is used in the stock market is built using Java as its core feature.

Now the next domain is the scientific and the research community now ll of you are quite familiar that in the scientific and research community a lot of calculations are going be performed and the numbers which these calculations are going to be performed is going to be very huge now when you're using an application to perform these operations this needs to be highly powerful it needs to be highly scalable and needs to be precise and in that field Java is the one of the most preferred to build applications. So most of your scientific community applications are built using Java as part of their code. Then comes the IT domain

Now IT is the domains that hires most of the Java developers. On a daily basis you have closed 50 million applications developed using Java as part of its code now this is not a number that's going to reduce any day and therefore this in itself should give you an idea of how much job opportunities there is once you have grasped Java completely.

When you come down to the banking doubling your transaction processing and your transactions management involves Java as prefect security feature you're going to be using various components of Java to achieve your security feature.

Finally when you come down to the retail domain when you go down to a supermarket the billing application that you see there that also is developed using Java as part of that code.

Again your financial domain that your server-side applications that is a heart of a financial service that extensively is written using Java itself. Now with this I hope you've got a simple understanding of how Java is going to be used across different domains but again coming back to my main point that is Java is used everywhere so you can consider jar to be a wide ocean that is spread all across size but don't think of it as a bad way think of it as an opportunity for you when Java is spread across so many domains when it's present all around us.

Features of Java

Now moving forward let's look at some of the key features that made Java one of the most popular programming language.

Now, these are the eight key features that Java has to offer. Now these are also referred to as the buzzwords of Java and this is basically because when Java was introduced in 1995 there was a white paper written on it. Now, in the white paper these were the main concepts that was focused on and that's why they are referred to us buzzwords Java. Now, we'll be talking about each of these features one by one we'll starts off with the simple features.

• Java was designed to be easy for professional programmer to learn and use effectively.
• No need to worry about memory management because there is Automatic Garbage Collection in Java.
• Applications written using Java are portable in the sense that they can be executed on any kind of computer containing any CPU or any operating system.
• Java is true object oriented language.
• Everything is considered to be an "object" and all operations are performed using these objects.
• Java programs run inside virtual machine sandbox to prevents any activities from understed sources.
• No use of explicit pointer.
• Java has a feature called Remote Method Invocation (RMI) using which a program can invoke method of another program across a network and get the output.
• Java programs carry with them substantial amounts of run-time type information that is used to verify and resolve accesses to objects at run time.
• Java completely takes care of memory allocation and releasing, which makes the Java program more robust.
• Java achieves high performance through the use of bytecode which can easily translated into native machine code.