JavaScript
JavaScript was unveiled to the world by Netscape in 1995. Its initial name was Mocha, then LiveScript, before Netscape settled on JavaScript.
It’s used as a scripting language by most of the websites found online. The programming language works in conjunction with CSS and HTML.
Java
Java was introduced in 1991. Unlike JavaScript, Java requires the Java Virtual Machine (JVM) for implementation. It’s a general-purpose language typically run on servers. Java is also the go-to programming language for most Android mobile apps.
The Big Difference Between JavaScript and Java
JavaScript and Java have a few things in common. They can both be used for front- and back-end development. Also, developers must use object-oriented programming when coding using JavaScript and Java.
However, there are some significant differences. For starters, JavaScript is primarily leveraged for web technology. But you can use Java to construct just about anything, like enterprise software, hardware and Android apps.
A closer look at some other variations:
| Key Variance | JavaScript | Java |
|---|---|---|
| Type of Programming Language | Interpreted scripting language that can be understood by a browser in its original format | Compiled programming language that must be converted into bytecode and run on the JVM |
| Inheritance | Prototype-based, which means objects must be assigned as prototypes with constructor functions to establish a hierarchy | Class-based, which is a top-down approach |
| Concurrency | Uses a single thread of execution in the event loop, which is referred to as Node Clustering | Uses several threads to perform a variety of tasks at once |
| Type Checking | Dynamic type checking, which doesn’t require the developer to specify the variable type Key benefit of this approach is that programmers can work more efficiently and utilize less memory | Static type checking, which requires the developer to specify and check the type of variable when it’s compiled Key benefit of this approach is that errors are easily identifiable in the beginning stages of development |
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