What is Java and how to Learn?

You must have heard the name of Java . But this question must have come to your mind that  what is Java and how to learn Java Programming Language with it. Will answer this in today’s article and would like to give some more information related to it.

In today’s time, the Demand of Programming Language is very high. If I tell you an interesting thing, your hoses will fly away. In recent times, Java code is used in more than 3000000 electronic devices. From this you can guess how popular this Programming Language is.

What is Java
What is Java

You are still using all the smart phones and electronic devices like AC, Oven, Smart TV, Digital Fridege are used in all these. Programming different parts in equipment of some Automated Industries. If you want to learn Android Programming, then learning Java is very important. So let’s know what is Java .

What is java?

Java is a General Purpose Programming Language. They are used for Software and Application Development. java is a High Level Programming Language. It was started by Sun-micro system in 1995 . James Gosling is one of its major developers. This is Platform Independent Language. You can run the code written in it in any platform or os.

All the codes written in it are in English and not in Numeric Codes. Anyone can easily understand the codes written. That is why it has been included in the High Level Language. It follows the concept of Oops. Fundamental of C ++ Language has been used in it.

Some rules are followed to write the program which is called Syntax. Writing a program without syntax produces error. Just like when you write Hindi or English, if you do not follow the rules of Grammers in it, then it goes wrong, it is very important to follow Syntax in it.

What is the use of java

This Computer Programming Language has only one purpose. Whatever code is written in it, it should be run in all computers. Whether or not the two machines are the same or not, I mean to say, code written in C ++ is never the same Execute in another machine, for example, whether it is an OS (Windows or Mac). Code written in Windows never runs in Mac OS, but it is wrong in the case of java.

It is used to create web based programming and mobile application software. All the operating systems of Android like Kitkat, Lolipop, Oreo have all been developed from this programming language. In today’s time, all the web pages run on Java Script. The question in your mind will be how does Code Execute.

How to run or execute Java Program Code

This language uses an Abstract Computing Machine to run the code, which is named Java Virtual Machine . It is very important for you to understand this.

Java Virtual Machine

Its short form is JVM . It is a Virtual Computer that runs all Java programs. When a program is written, the same is called the Source Code. Byte Code is generated by compiling this source code with the help of Java Compiler. JVM is used to execute this Byte Code. The JAVA Interpreter inside the JVM runs the same program.

One thing to know is that JVM is already installed in all the computers that run the java program. That is why this code runs in the entire computer. For this reason java is a Platform Independent Language. All other Programming Languages ​​have their compilers which produce code. They generate for the same sysytem and run in the same system. But the java compiler that generates the byte code is for JVM.
Because of the JVM being in the entire system, this program runs in every computer. This enables Virtual Machine code to be running in the operating system.

Platform Independent

By its name, you must have understood that it does not depend on the platform. Platform here means OS. Such as Windows, Linux, Mac, Android. When we write programs or create a software, they all run on the OS platform. But there are some programs which run on only one computer and OS, such a program is called Platform Dependent Program. If there is a program that runs on all other platforms (running means to run). So it is called Platform Independent Code.

This means, java is an AC Programming Language whose code runs on all cross-platforms. There is a saying “Write Once Run Any Where”. So let’s talk now, where is it used and what is the use.

What was the purpose of making JAVA

You will know that all the programming languages ​​are and were before. They follow all the procedural structure. After this, the Obeject Oriented concept came to my mind that in today’s time Obeject Oriented changed the entire Programming Industry. This programming language also follows this concept.

You might be thinking that although there are so many computer languages ​​already, what is special about this? In recent times, you must know how much Demand of Internet applications are in it. Whether it Online Video / image editing, regardless of Online Word to PDF, ZIP, RAR like to Convert FILE make it Bdolt all the same.

Nowadays filling the online form, Online Calculator has become possible only with the help of java. Java in Internet works together with other web based languages. Meaning it is clearly designed to develop Internet Application and Tools. If we compare it with other languages, it executes easily in the Internet. It is also very easy to write a program in it.

Java Power, JSP (Java Server Pages) and java can all be used to create a powerful web application. You can easily implement java applets in the web. With its help, you can also write offline programs that run without internet. I would like to give you this advice, if you want to do anything in the world of SW now and then, you must learn it and how to learn this language, further you will also get information about it in this article. By now you have come to know a lot, but you should also know about its history.

Berief History of Java

Its history is very fun, so it is very important to know this. It was married to the Green Team. Members of the Java team were called the Green Team. The only objective of this team was to create an AC language that could be used to program electronics devices like Set-top Boxes, Television. At that time it was an Advance Concept. But it proved more helpful for Internet going forward. After some time, this technology was found with NetScape.

James Gosling

James Gosling is one of the main developer of JAVA. In recent times, Java is used for Internet Programming, Mobile Devices, Games, E-Business solutions.
Java Language Project was started in 1991 by James Gosling, Mike Sheridan, and Patrick Naughton. He had formed a team of Engineers to work on this project, that team name was Green Team. Coding of this language is written in C.
James Gosling named this language GreenTalk and File Extension was .gt. It was later renamed Oak.

Why was it named Oak?

Oak is also called the Symbol of Strength. Oak is the National Tree of Weasten Countries (USA, France, Germany, Romania). In 1995, the name Oak was changed to Java, because Oak was already the trade mark of the Oak Technologies Company at that time. Now the next question has come, why is Java its name and why is it not any other name.

Why was it named JAVA

When the Green Team was choosing a language name. All those team members gave some name suggestions such as Dynamic, Revolutionary, Silk, Jiot, DNA. He wanted to have a name that would represent his technology. Any name that is Revolutionary, Dynamic, Lively, Cool, Unique. According to James Gosling, there were two name suggestions at the end, one was Silk and the other was JAVA. The Green Team found the name JAVA quite unique; finally it was named.

Java was the name of an island in Indonasia. Where Coffee Produce first took place. It was developed in Sun MicroSystem. It is currently a part of Oracle Corporation. JDK 1.0 was released in January 1996.

History of Java Version

With the passage of time, different version of JAVA was released, their information is given below.

  • JDK Alpha and Beta (1995)
  • JDK 1.0 (23 Jan, 1996)
  • JDK 1.1 (19 Feb, 1997)
  • J2SE 1.2 (8 Dec, 1998)
  • J2SE 1.3 (8 May, 2000)
  • J2SE 1.4 (6 Feb, 2002)
  • J2SE 5.0 (30 Sep, 2004)
  • Java SE 6 (11 Dec, 2006)
  • Java SE 7 (July 28th, 2011)
  • Java SE 8 (18 March, 2014)

Where is the use of Java

In recent times, more than 3 Billion devices run with the help of java. It is a very highly used Programming Language in IT Indistriy.

JSP – It is a web technology, it is used in web application. Java Code is inserted into HTML Document with the help of JSP. JSP Tag is used to insert Java code into HTML tag. Dynamic web pages are created with this help.
PHP – You will know this is a server side Scripting Language. Java is also used in php.

Applets – This is also a kind of Full Java program. Which is added inside the web page. Through which new features are seen in web browser. The applets remain inside HTML. Some online games are also examples of Applets. Plugins are required to run applets in Web Browser.

J2EE – Java 2 Enterprise Edition is a Platform Independent Environment. With the help of which web based enterprise applications are created. A web application created by J2EE is used to share XML based Structured data with companies.

JavaBeans – This is similar to Visual Basic. Already, new and advanced applications are made with the help of Mozud COMPONENT. In this, many objects are placed in an object called Bean.

Mobile – Despite all the above mentioned technology, this language has a very good contribution in mobile devices. This completely changed Game Industries. All the mobile industries are there, they use Java technology.

Types of Java Applications

Web Application

Means to develop server side web application. In the recent times, Servlet, Jsp, Struts, jsf are all used to create Web Application .

Standalone Application

This means desktop application and mobile application. These are the sw we use everyday. Examples: – Media Player, Antivirus, MS-Office, Browsers. Standalone applications are easily made with the help of AWT and SWING.

Enterprise Application

Java is the only programming to create many enterprise applications. Because it provides High Level Security. Banking software, industry application, accounting application, EJB (Enterprise Java Bean) is used to create all these types of enterprise applications.

Mobile Application

You must know about it that all the games and applications you run in mobile are made from this language. All the apps in Google Playstore are developed with java programming.

Characteristics

Everything in Object Oriented –java is Object Oriented. With the help of Object Model, you can easily create app / sw with long code.
Platform independent – This is a typical language in which software written in it can run in all operating systems. Which is also called Cross Platform. But if we talk about C and C ++, then both these platforms are Dependent Language.

  • Simple – You can understand this easily and can write it easily, this is its quality. That is why it is called Simple. If you have understood the basic concept of Oops, then no one can stop you from becoming a master in java.
  • Secure – This is very popular because of its security feature. Virus Free can develop Tamper Free System software. Public Key Encryption is used in Authentication Technique.
  • Architectural-neutral – The code generated by the compiler is the byte code. The code that you can run anywhere, in any operating system and processor. Therefore, it is being called Architectural Neutral. For this it is necessary to have JVM which is in all the systems.
  • It is also portable because of Portable – Platform Independent. Because both java and Compiler are written in ANSI C.
  • Robust – All the programs written in it are strong. Strong means not strong like iron. When PROGRAM is RUN, there is no error in it. Because Compile Time and Run time Error checking mechanism is used.
  • Multi-threaded – Because of these features, you can write programs that can perform multiple tasks. Meaning there will be an application and in that you can do all the tasks.
    High Performance – Just in Time Compilers java’s performance is quite good.
  • Distributed – Due to this nature, the status of the Internet’s distributed environment has maintained its status.
  • Dynamic – This is Dynamic Programming. It can adapt to any environment.

Different Editions of Java Technology

Java SE or Java Standard Edition provides you those tools and APIs to create Java SE –Server Applications, Desktop Applications and applets programs. All the programs written with the help of java SE run in all operating systems. Such as Linux, Windows, Mac.

JEE – (java Enterprise Edition) is helpful for web application services, component model, Enterprise Class Service Oriented Architecture (SOA).

JME – Java Micro Edition or JME This is a collection of APIs. They are used to develop Mobile Phones application, PDAs, TV Set-Top Box software, Gaming Program. The interface of the micro edition platform is quite user friendly. It is well worth it. Security Model provides different types of Built in Network in which you can run java based application in it.

What is needed to run Java in Computer

  1. First of all, you should download Java software development kit from this link http://java.sun.com/
  2. Follow the instructions given in the website.

Java Editors for writing Java programs

You will need Editors to write a Java program and you can use the editers given below.

  1. Notepad ++ This is an editor in which you can easily write code. Error is easy to find and Missing Bracket is also easy to find.
  2. Netbeans – This Java IDE is an open source and free. Which you can download from this link http://www.netbeans.org/index.html
  3. Eclipse – This is also the java IDE developed by the eclipse open source community. You download from this link http://www.eclipse.org

How to learn java

According to the Demand of Programming, if you know the Fundamentals of Programming then you should learn java. Because you can make income in millions by developing software and creating an app in play store. That is my advice, you can easily learn by watching video series from some Tutorial Sites or YouTube. Below are the names of some channels and a list of websites from where you can teach Java.

Name of Tutorial Site for learning JAVA
https://www.tutorialspoint.com/java/
https://www.codecademy.com/learn/learn-java
https://www.udemy.com/java-tutorial/
https : //www.w3schools.in/java-tutorial/
https://www.youtube.com/results?search_query=java+tutorial+

My final opinion on this article

This information is more useful for specific students. What is java you learned in today’s article . You also get answers to these questions, what is the use of this Programming Language. History means you must have also known the history of java. The most important question that you people ask from us is how to learn Java and those who come in the special examination of Characteristics Features of java. How many types of application you can develop from java language. You have got all the knowledge.

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