Difference Between Java and JavaScript


Main Difference

Both Java and JavaScript are OOP languages that are widely used by web developers. There are many differences between these two programming languages. The main difference between Java and JavaScript is that Java is an Object Oriented Programming (OOP) language while JavaScript is an OOP scripting language.

What is Java?

Java is general-purpose object oriented, class based and concurrent programming language and designed to minimize implementation dependencies as possible. This allows the application or web developers “write once, run anywhere” (WORA) that means that compiled Java code can work on all platforms that are supportable with Java without having a need for recompilation. Java made application are mainly compiled to byte-code to make them able to run on any Java Virtual Machine (JVM) regardless of computer architecture. In 2015, Java is declared as the most popular programming language being used by the web and application developers. It is particularly used for client-server web applications and have over 9 million developers at present. Much of its syntax are derived from C and C++.


What is JavaScript?

JavaScript is a dynamic language that is the most important part of web browsers. The implementation of JavaScript allows client-side scripts to interact with the users control the browser alter the document content that is displayed and communicate asynchronously. It is also known as ECMAScript and is classified as a prototype-based scripting language with dynamic typing first-class functions. This multiple features makes it a multi-paradigm language, supporting object-oriented, imperative and functional programming styles. JavaScript is also capable in running on the platforms that are not web-based like PDF documents, site-specific browsers, and desktop widgets.

Key Differences

  1. Java is an Object Oriented Programming (OOP) language while JavaScript is an OPP scripting language.
  2. Java syntax are derived from C and C++ while JavaScript syntax are derived only from C.
  3. Java is only used for web-applications while JavaScript is used for PDF documents, site-specific browsers, and desktop widgets in addition to web-based platforms.
  4. Java is a statically typed language while JavaScript is a dynamic typed language.
  5. It is much easier to learn JavaScript as compare to Java.
  6. JavaScript is only a code that run on browsers only while Java produces applications that run in a Java Virtual Machine (JVM) or browser.
  7. JavaScript code are all in text forma while Java code needs to be compiled.
  8. Both Java and JavaScript requires different plug-ins.
  9. Java is a class-based language while JavaScript is prototype-based.
  10. Java is influenced by Ada 82, C++, C#, Eiffel, Generic Java, Mesa, Modula-3, Oberon, Objective-C, UCSD Pascal, and Smalltalk. JavaScript is influenced by Lua, Scheme, Self, Java, C, Python, AWK, and HyperTalk.
Harlon Moss

Harlon currently works as a quality moderator and content writer for Difference Wiki. He graduated from the University of California in 2010 with a degree in Computer Science. Follow him on Twitter @HarlonMoss