Since the inception of internet many programming and scripting languages have been evolved and designed the functionality of the browsers. Among of them java and JavaScript are the two popular languages which shares the similar technical concepts. Both languages provides flexible complexity to any web application. However, with JavaScript Liveconnect functionality we can communicate java and JavaScript code with each other. In simple words “With Livconnect functionality we can call java public methods and can instantiate java objects from JavaScript. Likewise JavaScript code(objects,properties,function) can be accessed from java.”
Many novice developers sometimes confused with java and JavaScript functionality as they don’t have clear idea about workings of these languages. So as resulted they do mistakes while writing codes for applications. In this article we are going understand the difference between java and JavaScript with their basic structure.
Introduction of languages:
As we are understanding the difference between java and JavaScript so we need to know about them before going in deep working structure of these languages. That’s why I have mentioned short introduction for both languages.
Java: Java is a high level programming language developed by Sun Microsystems in 1995 and is widely used on electronic devices. From desktop computers to big data-centers java shows its reliable and efficient approach. Java was developed by developers with the intention of “write once run anywhere“, which means that we can run java code on any platform without recompiling same java program on particular platform.
Javascript: On the other side, JavaScript is a cross platform, light-weight and object-oriented scripting language. It was invented by Netscape and initially used in Netscape browsers. We use JavaScript primarily for client side web development. JavaScript can be divided into two parts such as :
a) Client side JavaScript:
Client side JavaScript controls the browsers object and its Document object model(DOM) for eg: Form events, web page navigation etc.
b) Server side JavaScript
While on the other side Server side JavaScript deals with the script on the server for eg: Server side JavaScript allow an application to communicate with databases or manipulating files on the server.
Core differences of languages:
Technically Java and JavaScript differs in many ways such as:
| JavaScript | Java |
|---|---|
| JavaScript lacks strong type checking and static typing. | On the other hand Java strictly allows type checking at run-time. |
| JavaScript is a interpreted scripting language. It support object oriented features. | Java is a compiled programming language and also supports object oriented features. |
| JavaScript has prototype based model. As prototype model provides dynamic inheritance (which means inherited function can vary for individual objects). | Java possess class based model and it support single inheritance. |
| In JavaScript we don’t have to declare functions,variables and classes as we does in case of java. JavaScript also supports functions without any special declarative requirements. | On the other hand java supports type safety, which means that we can’t cast a java integer to object reference. |
| JavaScript is mostly used in client side web development such as: form validation, working with Browser properties and many more. | While Java mostly used on web server and web applications(via applet) too. |
Note: JavaScript follows most Java expression syntax, naming conventions and basic control-flow constructs which was the reason why it was renamed from LiveScript to JavaScript.
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