The Important difference between Java and JavaScript is simple, Java is an OOP programming language while Java Script is an OOP scripting language. Java runs on machine and Browser and JS runs only on browser.
Java
Java is an object-oriented programming language that uses a virtual machine platform to generate and run applications on nearly any platform. “Write Once, Run Anytime,” Java offered. furthermore, Sun Microsystems produced the Java programming language, which has been conceived by James Gosling. Furthermore, In 1991, a group of Sun Microsystems developers known as the “Green Team” worked nonstop to create Java.
JavaScript
JavaScript is a lightweight computer language (sometimes defined as a “scripting language”) is creates interactive web pages. In another word, It has the ability to insert dynamic text into HTML. In addition, Browser language is another name for JavaScript. Meanwhile, JavaScript (JS) is not connected to or similar to Java. Both languages have a syntax similar to C and are widely used in client-side and server-side Web applications, but there are only a few commonalities.
The Difference between Java and Javascript
| Java | JavaScript |
| Java is a computer language that focuses on objects. | JavaScript is a scripting language that is built on objects. |
| Multithreading is possible in Java. | Multi-threading is not supported by Javascript. |
| Java objects are class-based, and we can’t write a program in Java without first establishing a class. | Prototypes are the foundation of JavaScript Objects. |
| Java is a computer language that may be used on its own. | It’s embedded in a web page and works with the HTML text. |
| Because Java is a tightly typed language, variables must be declared before they may be used in a program. A variable’s type is checked at compile time in Java. | JavaScript is a scripting language with a more permissive syntax and set of rules. |
| Any virtual machine (JVM) or browser may run Java applications. | JavaScript code used to just run in the browser, but thanks to Node.js, it can now run on the server as well. |
| Concurrency in Java is handled by threads. | Concurrency in Javascript is handled via an event-based technique. |
| Java objects are class-based, and we can’t write a program in Java without first establishing a class. | Prototypes are the foundation of JavaScript Objects. |
| The memory use of a Java program is higher. | Because JavaScript uses less memory, it is commonly utilized in web sites. |
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Experiment with JS here. https://www.javascript.com/
The 40 Best JavaScript Libraries and Frameworks for 2021. Get it here https://kinsta.com/blog/javascript-libraries/