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Java is used everywhere from watches to Laptops and PCs. It is used to create various applications and software. Oracle claims that over 3 billion devices are powered by JAVA, that’s a large number, isn’t it? If you are a beginner reading this article and planning to learn JAVA but don’t know where and how to start, Worry not! You will get to know all the information about JAVA from this blog like real-world applications of JAVA, Importance of JAVA, Advantages of learning JAVA and some best online JAVA tutorial for beginners.
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Before proceeding let’s have a look into the history of JAVA.
JAVA was developed by James Gosling at Sun Microsystems in the year 1995. Initially, JAVA was started by James Gosling as a project called “Oak” in the year 1991. It was developed with the motto of “Write Once, Run Anywhere”. Since its inception, many changes have been made to JAVA in both the language and classes.
If you are a noob and just started to learn JAVA then you might be wondering where exactly JAVA is used? This part of the article explains the real-world applications of JAVA. It is not used to develop games or desktop applications like adobe, Microsoft office and even Operating systems like Linux and Windows are not developed using JAVA.
Then, where exactly JAVA is used?
JAVA is considered as “king of all the programming languages” and it’s been considered as the best choice of programming language among developers for a long time. Following are some real-world applications of JAVA:
1. Web Applications - JAVA is used to develop web applications for healthcare, e-commerce, education, banking and insurance industries. Companies like Amazon, Alibaba, Wayfair, etc. rely on JAVA to scale their products.
2. Android apps - JAVA plays a major role in mobile app development. Also, Android development is not possible without JAVA. It is compatible with mobile app development platforms like AndroidStudio and Kotlin.
3. Desktop GUI applications - Desktop applications are easily developed using JAVA with the help of APIs like Swing, JavaFX, AWT. Following are some of the examples of desktop GUI applications Media Player, Thinkfree, Antiviruses, Acrobat reader, etc.
4. Enterprise applications - Unlike the web application and android application which is meant for individual users, an Enterprise application is a large software that operates in a large corporate environment to fulfil the organizational requirements.
JAVA runs securely inside the JVM (JAVA Virtual Machine) thus prevents the security breaches and meets the essential need of these companies. JAVA comes with a strong memory management system that automatically clears the memory and improves the performance of these applications. Examples of enterprise applications are Enterprise Resource Planning (ERP), Customer Resource Management (CRM), clubs, schools, banks, etc.
5. Scientific applications - JAVA is used to develop logical applications that involve mathematical calculations and scientific calculations. MATLAB is one of the popular scientific applications that is used in space research, aerospace, medical science, etc. JAVA is used in both the front-end (with struts, JSP, servlets) and back-end (with core JAVA) development process of MATLAB.
6. Game applications - JAVA is used to develop 2D games. The famous game Minecraft was written using JAVA. Also, the games that you play in android are developed using JAVA.
JAVA also supports jMonkeyEngine, the most powerful 3D engine that can create 3-Dimensional games.
Apart from the above-mentioned applications, JAVA is used to develop web servers and application servers, software tools, cloud-based applications, embedded systems, big data technologies and many more. Thus JAVA gains the title “blue-collared” language by covering almost every field of software development.
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In today’s world JAVA is more popular than other programming languages like C++, Python, PHP, C# and JavaScript. Following are the reasons that show the importance of JAVA:
1. Platform Independent - You can run JAVA in multiple platforms like Mac, Windows, Linux without the need for any special software. Java is platform-independent because it is compiled into bytecode. But to run JAVA, JVM needs to exist in the machine.
2. Simple - Beginners find JAVA easy to learn and use because the syntax rules of JAVA are similar to C and C++ which are the ancestors of present-day programming languages like Python and JAVA.
3. Robust and secure - JAVA attracts developers because of its security features. It uses the runtime environment of its own, unlike other programming languages that use the operating system’s runtime environment. Also, JAVA prevents illegal access right with the help of a bytecode verifier that checks for any illegal code.
JAVA is inherited with automatic garbage collection features and provides strong memory management and makes it a robust language.
4. Supports Internet of Things - The project Jigsaw aims to make JAVA run in a wider variety of small and portable devices.
5. Community support - JAVA gets support from a large community that helps Oracle to make the programming language more dynamic and concurrent. The community helps to boost JAVA’s scalability, networking, security and performance. They also make JAVA score over other JVM-based languages like Groovy and Scala.
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Several other features of JAVA include:
Though there are many reasons to learn JAVA, Following are some interesting advantages of learning this programming language:
Good career scope - The ultimate goal of learning is to earn. JAVA makes you earn more. Tech giants like IBM, Google, Amazon and many more are in demand for JAVA programmers. As per the Payscale.com report, the average salary of a JAVA developer ranges from $70,000 to $80,000.
Java makes beginners learn to code easily with its English like syntax. After getting familiar with the initial hurdles like installing JDK, setting up PATH, it is easy to code in JAVA.
Global presence of JAVA, where it is used in laptops, mobile and desktops have created varied job roles for skilled programmers such as application developer, web developer, software developer, web programmer, etc.
This part of the article gives you the step by step guide to learn JAVA.
Let’s start!
Step 1: Start with basics
Learning the basics is very important for any programming language. Initially, you might feel difficulty in understanding the concepts but as you progress, you will get used to it in no time. Get familiar with topics like Variables, Loops, Data types, JAVA identifiers, Switch case, etc.
Step 2: Be patient
Learning to code JAVA will be difficult because of the huge content about the language. I’ve seen most of the people drop their idea of learning a programming language before they start just by seeing the volume of material. So be patient and keep going.
Step 3: Practice
“Practice makes you perfect” - This suits for everything in life. After learning the basic concepts of JAVA start practising. You can start with basic programs like hello world and simple addition, subtraction, etc.
Never copy-paste the code from google. Read and type it into your IDE which makes you understand the program. After mastering the basics, you can go for little complex programs. Below is a list of beginner java programs that you can consider for practice:
Step 4: Explore more about JAVA
Read articles about various JAVA topics and engage in community forums like StackOverflow, Reddit, Quora, etc. Forums help you to teach others and learn as well. You can learn from the mistakes of others.
Step 5: Start creating APIs, web and desktop applications
When you are done with the basic programs and get comfortable with the basic terminologies of JAVA, go to the next step. Developing APIs and web applications give you the confidence to face interviews and participate in JAVA related discussions. Below are some JAVA project suggestions:
If you are not a self-learner and lazy to learn by yourself (Don’t get offended). You can enrol for online courses and can learn from experts. Following are the best online JAVA tutorials for beginners:
1. Core JAVA for Engineers
In this java beginners course, you will become very good at core java programming by learning it from scratch. Basic concepts like loops, classes, variables and constructors will be explained in this tutorial. You will also learn JAVA concepts such as searching and sorting operations, Multithreading, AWT, swing, classes and objects that help you to crack interviews.
Explore more about this online JAVA tutorial
2. Advanced JAVA for Engineers
This online Java course makes you develop industry-ready java applications. As part of this course, you will learn to develop web applications and topics like session management, servlets, struts framework and many more. You will learn all the java concepts by building real-time projects which makes it even more interesting to learn.
Explore more about Advanced JAVA online tutorial
All these tutorials are conducted by industry experts in live online sessions thus you can clear all your doubts in real-time. You will also get a smart certificate after the successful completion of the course.
I guess you got enough knowledge about JAVA and the best ways to learn JAVA by reading this article. To master anything in life, consistency and dedication are important.
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