Java vs JavaScript – Difference Between Them

Key Difference between Java and JavaScript

Java is a multi-platform, object-oriented, and network-centric programming language, whereas JavaScript is a scripting language that helps you create interactive web pages.
Java is a strongly typed language, while JavaScript is a weakly typed language.
Java has a file extension “.Java”, whereas Javascript has the file extension “.js”
With Java, you write code once and run it on almost any computing platform, on the other hand, Javascript is a cross-platform language.
Java is compiled on the server before execution on the client, while JavaScript is interpreted by the client.
Java is a static language, while JavaScript is a dynamic language.



 public static void main(String args[]){
     System.out.println("Hello World");
 }
}

<html>
<head>
    <title>My First JavaScript code!!!</title>
    <script>
        alert("Hello World!");
    </script>
</head>
<body>
</body>
</html>

SalaryThe average salary for a Java Developer is $103,464 per year in the US.The average salary for a JavaScript Developer is $113,615 per year in the US.

Features of Java

Here are the important features of Java.

Write code once and run it on almost any computing platform
It is designed for building object-oriented applications.
It is a multithreaded language with automatic memory management
Facilitates distributed computing as its network-centric

Features of JavaScript

Google trends Java vs. Java script

Here are important features of Java-script:

It’s a cross-platform language
It’s widely used for client-side and server-side
Strong Testing Workflow
It’s easy to learn and to start coding with
Added dependencies

Application of Java

Stack Overflow Questions JAVA vs Java Script

Here, are important applications of Java language:

To develop:

Android Apps
Enterprise Software
Scientific Computing Applications
Big Data Analytics
Java Programming of Hardware devices
Used for Server-Side Technologies like Apache, JBoss, GlassFish, etc.

Application of JavaScript

Here, are some important applications of JavaScript:

Dynamic Single-Page Applications (SPAs)
Front-End technologies like jQuery, AngularJS, Ember.js, ReactJS are based on Java Script
Server-Side technologies like Node.js, Express.js, MongoDB are based on Java Script.
Mobile App Development using PhoneGap, React Native, etc.

Advantage of Java

Here, are benefits/ pros of using Java

Detailed documentation is available.
A large pool of skilled developers available
Huge array of 3rd party libraries
It allows you to form standard programs and reusable code.
It is a multi-threaded environment that allows you to perform many tasks at the same time in a program.
Excellent performance
Easy to navigate libraries

Advantages of JavaScript

Here, are pros/benefits of using JavaScript

It is an open-source project with Microsoft’s patronage
Specially designed tool for small scripts
Supports classes, interfaces, & modules.
Compiled JavaScript runs in any browser
Allows cross-compilation
You can extend JavaScript for writing large apps
You can use JavaScript to store and retrieve information on the user’s computer
Immediate feedback to the visitors
It allows you to create interfaces that react when the user hovers using mouse.

Disadvantages of Java

Here, are cons/drawback of using Java language

JIT compiler makes the program comparatively slow.
Java has high memory and processing requirements. Therefore, hardware cost increases.
It does not provide support for low-level programming constructs like pointers.
You don’t have any control over garbage collection as Java does not offer functions like delete(), free().

Disadvantages of JavaScript

Here, are drawbacks/cons of using JavaScript

Client-side JavaScript does not allow the reading or writing of files. It has been kept for security reasons.
JavaScript can’t be used for networking applications because there is not much support available.
JavaScript doesn’t have any multithreading or multiprocessor features.

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