Java VS JavaScript: What’s the Difference?
New students and non-technical people confused between Java and JavaScript because of the common word of “Java.” Each programming language used in its opinion and each has strengths over the other. One isn’t significantly better than the other; Programmers use both Java and JavaScript for various functions.
Java and JavaScript are written, assembled, executed, and even greatly different in the ability of both languages. Java is used in a wide range of server-side development while JavaScript is the best suit for developing client-side scripts for tasks such as interactivity and validation.
There are some more important differences that you will see further in this article.
What is Java?
Java is an OOPs (Object-Oriented Programming) language. A team of Sun Microsystem engineers called the “Green Team” create Java in 1991. It was first released in 1995, and since then several new versions have been launched.
Programs developed in Java will be executed in a JVM (Java virtual machine) by which we can run the same program on multiple platforms. Many of the applications that make day-to-day living easier because of Java.
Example of Java Code
The syntax of Java is mostly determined by C++. So, if you’ve written in C++ in the past, you’ll probably see some similarities between the syntax of each language. As the Java code resembles, below is an example of a simple Hello World app written in Java.
class HelloWorldApp {
public static void main(String[] args) {
System.out.println(“Hello World!”);
}
}
What is JavaScript?
JavaScript is a scripting programming language. It is used to make interactive Web pages. It can include dynamic text into HTML. JavaScript is also known as the browser language.
With HTML and CSS, JavaScript (standardized as ECMAScript) is considered one of the largest three major components of the web. JavaScript is a scripting language that usually runs in a browser and makes web pages dynamic and interactive. Today JavaScript is also quickly growing as a server-side technology since the release of Node.js.
Example of JavaScript Code
Similar to the above, the code below shows that JavaScript is in a simple “Hello World How to reproduce. You will notice that JavaScript resides within the <html> and </html> elements, and starts with and ends at the.
<html>
<body>
<p>Beginning text</p>
alert(‘Hello, World!’)
<p>End text</p>
</body>
</html>
Java vs JavaScript: Key Differences
Let’s look at some of the major differences between Java VS JavaScript.
Compiled language vs. interpreted language
Java is a compiled language that runs on a virtual machine that is not readable by humans, while JavaScript code usually runs on the JavaScript engine in the same syntax that it is written.
Creating a program compiled in Java requires several steps. The compiled languages are converted directly to machine code, and as a result, they are faster than the interpreted languages. In Java programming, you need to make a change to the program while a program in JavaScript runs line-by-line and executes your commands quickly.
JavaScript is an interpreted language which was once known to be slower than Java. But over time, with the progress of compilation, the performance of JavaScript has improved remarkably.
Java vs JavaScript — Concurrency
Concurrency is handled in a very different way between Java and JavaScript.
The strength of the Java class Concurrency (java.lang.Thread) is that it allows developers to work with multiple threads that also help maintain parallel Concurrency.
While JavaScript runs on a single thread, it responds to events that occur during programming. JavaScript handles the queue system using a feature that is used to “Event Loop” Called, its features – heap, async/await, callbacks, event loop, and promises.
Java vs JavaScript – Class-based or prototype
Java is a class-based language. It follows a class-based relationship where all the properties mentioned in a class are inherited from the instance of that class. Whereas, JavaScript is a prototype language that inherits all objects directly from other objects of coding.
Java vs JavaScript – static or dynamic type checking
JavaScript is a scripting language that uses a dynamic form of coding and code protection verified at runtime. Java uses static type where variables are checked at compile-time. In both languages, programmers need to specify the variable type like integer type, string type, double type, etc.
Java static type checking is helpful for programmers to find the type of error early in the application development. And, because this compiler knows what type of data is being used, they can code at a faster rate. Automate your JavaScript development process by hiring the industry’s best outsourcing developers.
The advantage of JavaScript dynamic type checking is that you are free to perform type tasks that improve the productivity of programmers.
Java vs JavaScript – Support Options
Oracle provide assistance to users who face problems with Java software. Users can use Oracle’s Premium Java SE support service to solve problems related to the Java platform, Java components, Java standard edition, etc.
When talking about Java vs JavaScript, we can’t ignore the fact that these two languages have some similarities.
- Support for back-end development
Both languages can be used on the server-side and can support back-end development technologies such as Node.js, JBoss and Apache.
- Support for front-end development
Both Java and JavaScript support front-end development and are easy to embed in HTML coding. Both languages provide access to techniques in coding such as coding, polymorphism, and inheritance.
Conclusion
I hope you will have a clear picture of Java vs JavaScript. Without a doubt, learning these two languages will make Java and JavaScript programmers more productive and will also help build enterprise-grade web applications and develop Java software solutions.
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