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    Java v/s JavaScript: The reality behind both!

    Java v/s JavaScript has been a topic that has always been debated among developers for years. Which is better Java or JavaScript? Is Java or JavaScript better? Java v/s JavaScript differencehas been some of the questions which have been on the mind of developers for ages. So let's get into the much-debated questions to answer some of the queries.

    What is Java v/s JavaScript?

    Java is a multi-platform, object-oriented, and network-centric, programming language. It is among the most used programming language. It is also used as a computing platform, and it was first released by Sun Microsystem in 1995. It was later acquired by Oracle Corporation whereas JavaScript is a scripting language that helps you create interactive web pages which follow the rules of client-side programming, so it runs in the user's web browser without the need for any resources from the webserver. You can also use JavaScript with other technologies like REST APIs, XML, and more. Nowadays JavaScript also using technologies like Node js.Java and JavaScript are both written, assembled, and executed differently, and each has dramatic differences when it comes to what it is capable of doing or Java v/s JavaScript performance. Java v/s JavaScript difference is Java is used in multiple places including Android apps, credit card or debit card programming, and in the creation of desktop applications and web enterprise applications whereas, JavaScript is mainly and mostly used to make web pages more interactive. JavaScript can be used as an alternative to Flash, though most programmers or developers will tell you that JavaScript is more popular and has more functionality, and can adapt faster rather than Flash. JavaScript can be used to do neat things like creating animation in HTML. Java is mostly and typically used for server-side programming, whereas JavaScript is reserved for developing client-side scripts for functions like validation, durability, and interactivity. Some other key differences between Java v/s JavaScript may be described as follows:

    Java is an OOP (object-oriented programming) language, and JavaScript is specifically an OOP scripting language.

    Both Java and JavaScript as two different languages require different plug-ins.

    Java code must be compiled, and JavaScript code is all-text.

    JavaScript code is run on a browser only, while Java creates applications that run in a virtual machine or browser.

    To answer the Java v/s JavaScript difference and performance question some tests indicate Java is faster than JavaScript, however, the JavaScript regex engine is faster than the Java regex engine.

    Major Similarities between Java and JavaScript

    Though the Java v/s JavaScript topic is unending and Java and JavaScript are two entirely different if you are looking at web app development you must compare the similarities between Java to JavaScript.

    Back-end development – Both Java and JavaScript can be used on the server-side. Java has long been used to power back-end technologies such as Apache, JBoss, and WebSphere. Node.js has become a launchpad for JavaScript-powered servers.

    Front-end development – Both JavaScript and Java can also be used in every aspect of front-end development. JavaScript can be embedded directly into HTML, which is implemented as a framework or library; Java can be used as a Java applet.

    Object-Oriented Programming (OOP) – Both of them require the developer to code objects and their relationships in the context of each other. By using the extension, it gives both languages access to technologies such as inheritance, encapsulation, and polymorphism.

    To explain the Java v/s JavaScript better, we’ll explain Java and JavaScript features respectively.

    Java is a standalone language that is executed by the Java Virtual Machine that needs to be compiled into byte-code and has the file extension ".Java". Java works on class-based objects and you can't program in Java without creating a class first. To write or create Java programs it needs an entire JDK that is a Java Development Kit. Java also supports the static type of checking programs and Java class concurrency which allows to work with many threads and help maintain parallel concurrency in coding.

    Java is developed by keeping “security of codes” as the primary motive that can be achieved through JVM. The source code of Java is hidden as it is compiled into the unreadable bye coding type.

    However, JavaScript must be placed inside an HTML document to function and executed by a web browser such as Mozilla and Firefox and has the extension “.js". JavaScript works on the prototype-based. It requires a text editor to write JavaScript programs. The source code can be read by any person as it is written in the plain text thus the security factor is compromised here. However, concurrency is based on the queue system "event loop" that supports features async/await functions in coding and promises. JavaScript is less secured and you have to make efforts to secure its coding from the cross-site-scripting, etc.


    Java v/s JavaScript depends from developer to developer yet it's a choice they have to make to ensure they use the best programming language which helps them achieved the result of their project as soon as possible safely and securely. When Java v/s JavaScript comes to the safety and security of the code, Java is any day safer than JavaScript.

    About the Author

    Kamal Rastogi is a serial IT entrepreneur with 25 yrs plus experience. Currently his focus area is Data Science business, ERP Consulting, IT Staffing and Experttal.com (Fastest growing US based platform to hire verified / Risk Compliant Expert IT resources from talent rich countries like India, Romania, Philippines etc...directly). His firms service clients like KPMG, Deloitte, EnY, Samsung, Wipro, NCR Corporation etc in India and USA.

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