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Javascript vs Java has been a long debate for comparison that’s been going on for ages. Which one to go for and what are the major differences in both the languages. Both Java and JavaScript are written, assembled, and executed differently, and they have significant differences in terms of what they can do.

Java and JavaScript have long been misinterpreted by both novice programmers and non-technologists, but the only thing they have in common is the term “Java.” Each one is a powerful programming language in its own features, and each has benefits over the other. One isn’t automatically superior to the other; developers use both Java and JavaScript for a number of purposes. So, what makes each one of them unique?

Java is being used in a variety of applications, like Android apps, credit card programming, and the development of desktop and web business applications. JavaScript, on the other hand, is mostly used to create web pages more immersive. While most developers would tell you that JavaScript is more common and has more features than Flash, it can be used as an alternative. JavaScript could be used to build an animation in HTML.

Let’s have a look at each one of these languages individually to understand them in detail before carrying out a Javascript vs Java comparison.

What is Java?

Sun Microsystems introduced Java as a programming language and computing platform in 1995. There are numerous applications and websites that will not function unless Java is installed, and more are being developed on a daily basis. Java is a fast, stable, and dependable programming language. Java is all around us, from computers to data centers, gaming consoles to scientific supercomputers, smartphones to the web!

Java is a multiplatform, object-oriented, network-focused programming language. It is one of the most widely used programming languages.


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Important features of Java:

  • It is used in the development of Android applications.
  • Aids in the development of Enterprise Software
  • A wide variety of mobile Java applications are available.
  • Applications for Scientific Computing
  • Application for Big Data Analytics
  • Hardware Computer Java Programming
  • Used for server-side technologies such as Apache, JBoss, GlassFish, and others.

Advantages of Java

  • There is detailed documentation available.
  • There is a whole range of highly qualified developers available.
  • A huge range of third-party libraries is open.
  • It allows the development of standard programs and reusable code.
  • It is a multi-threaded environment that allows you to conduct several activities in a program at the same time.
  • It gives you outstanding results
  • It offers libraries that are easy to use

Disadvantages of Java

  • Because of the JIT compiler, the program is relatively slow.
  • Java has a lot of memory and computing efficiency. As a result, the cost of hardware rises.
  • It does not accept low-level programming constructs such as pointers.
  • You have no control on garbage collection because Java can not provide functions like delete() and free().

What is Javascript?

JavaScript is a dynamic programming language for computers. It is compact and is most widely used as a component of web pages, where its implementations enable the client-side script to communicate with the user and build dynamic pages. It is an object-oriented programming language that can be understood.

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JavaScript was initially known as LiveScript, but Netscape changed its name to JavaScript, likely due to the buzz created by Java. JavaScript was first introduced in Netscape 2.0 in 1995 under the name LiveScript. The programming language’s general-purpose core has been integrated into Netscape, Internet Explorer, as well as other web browsers.


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Important features of Javascript

  • JavaScript is a compact, interpreted programming language.
  • It is built for developing network-centric apps.
  • It is well integrated with Java and HTML.
  • It is open and cross-platform.

Advantages of Javascript

  • It is an open-source project backed by Microsoft.
  • A tool created specifically for small scripts.
  • Classes, interfaces, and modules are all supported.
  • JavaScript that has been compiled can be run in any browser.
  • Cross-compilation is possible.
  • JavaScript can be expanded to allow for the development of broad applications.
  • JavaScript can be used for the storage and retrieval of data from a user’s device.
  • Visitors offer direct reviews.
  • It enables you to build interfaces that respond to mouse hovers.

Disadvantages of Javascript

  • On the client’s hand, JavaScript does not support file reading or writing. It was held for security purposes.
  • Since there isn’t much support for JavaScript, it can’t be included in networking applications.
  • JavaScript does not support multithreading or multiprocessors.

Difference between Java & Javascript

1It is a programming language.It is a scripting language.
2It is a Standalone language.It is not a standalone language, as it requires to be embedded into an HTML for the program to run.
3Since Java is a strongly typed language, the user must specify the data type of the variable before defining and using it.
For instance, “int a,” the variable “a” can only hold integer values.
Since JavaScript is a loosely typed language, the user does not need to think about the data-type of the variable before or after the declaration.
“var a” is an illustration of a variable that can hold the value of any data type.
4Before running a Java program, it should be compiled.For the execution, JavaScript must be inserted into the HTML program.
5Java programs do not require the use of a web browser to execute.The web browser is required to execute JavaScript programs.
6It is among the most difficult languages to understand.It is one of the easiest languages to understand.
7class A {
public static void main(String args[]){
System.out.println(“Hello World”);
<title>My First JavaScript code!!!</title>
alert(“Hello World!”);
8Users in Java can conduct complex tasks by using Multi-threading.The user cannot perform complex tasks in JavaScript.
9It necessitates a considerable amount of memory.It does not necessitate too much memory.


To summarize, Java is usually used for all server-side development, while JavaScript is intended for creating client-side scripts for tasks such as validation and interactivity. There are a few other major differences:

  • Java code must be compiled, while JavaScript code is entirely textual.
  • Each language necessitates a unique set of plug-ins.
  • JavaScript code can only be run in a browser, while Java produces programs that can run in either a virtual machine or a browser.
  • Java is an object-oriented programming (OOP) language, and JavaScript is an OOP scripting language.
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A programming beginner can discover that both Java and JavaScript are valuable languages to incorporate in their coding toolbox. Indeed, many programmers and developers agree that mastering these two languages simultaneously, early on, is a wise step for a new programmer. Without even a question, knowing Java and JavaScript would make a developer more attractive to employers and contribute to more attractive work opportunities in the future.

It is perfectly established that the most commonly used languages in the programming industry are Java and JavaScript. Both languages include OOP concepts such as abstraction and polymorphism to create interactive and stable web applications. Since Java and JavaScript help all fields of web development, you can practice either front-end or back-end programming for your web applications.

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Each language necessitates a unique set of plug-ins. JavaScript code can only be run in a browser, while Java produces programs that can run in either a virtual machine or a browser. Java is an object-oriented programming (OOP) language, and JavaScript is an OOP scripting language.

Most developers will tell you that learning basic JavaScript and being familiar with it will take at least 6-9 months. Even so, you’ll need to spend years learning new skills and deepening your understanding of JavaScript, as well as several of the hundreds of other programming languages.

In general, Javascript and Java are used for distinct purposes. The primary benefit of JavaScript is that it operates in a browser. It’s great that new tools are being developed to make JavaScript more effective, but that doesn’t mean that this language can replace all others.

Though JavaScript is a definite upgrade from one of the most fundamental web development skills (languages like HTML and CSS, which can be mastered in under a month), you can still hope to learn the fundamentals of JS in a matter of months, not years—whether you learn through online courses or self-study.

Source: InApps.net

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