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Top 10 Advance Java Interview questions?

Top 10 Advance Java Interview questions?   What are the differences between abstract classes and interfaces in Java? What is the difference between ArrayList and LinkedList in Java? What is the purpose of the finalize() method in Java? What is polymorphism in Java and how is it achieved? What are the different types of inner classes in Java? What is the difference between static and non-static methods in Java? What are the different types of exceptions in Java and how do they differ? What is the difference between checked and unchecked exceptions in Java? How does Java handle multithreading and synchronization? What are the different types of JDBC drivers in Java and how do they differ?
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Why learn JavaScript?

 

Why learn JavaScript?


The most obvious reason for learning JavaScript is if you have hopes of becoming a web developer. Even if you haven’t got your heart set on a tech career, being proficient in this language will enable you to build websites from scratch—a pretty useful skill to have in today’s job market!



If you do want to become a web developer, here are some of the main reasons why you should learn JavaScript:

JavaScript experts are versatile

JavaScript is an extremely versatile language. Once you’ve mastered it, the possibilities are endless: you can code on the client-side (frontend) using Angular and on the server-side (backend) using Node.js. You can also develop web, mobile, and desktop apps using React.js, React Native, and Electron, and you can even get involved in machine learning.

If you want to become a frontend developer, JavaScript is a prerequisite. However, that’s not the only career path open to you as a JS expert. Mastering this key programming language could see you go on to work in full-stack development, games development, information security software engineering, machine learning, and artificial intelligence—to name just a few!

Ultimately, if you want any kind of development or engineering career, proficiency in JavaScript is a must.

JavaScript experts are in-demand (and well-paid)

JavaScript is the most popular programming language in the world, so it’s no wonder that it’s one of the most sought-after skills in the web development industry today.

According to the Devskiller IT Skills and Hiring Report 2020, 72% of companies are looking to hire JavaScript experts. Enter the search term “JavaScript” on job site Indeed and you’ll find over 40,000 jobs requiring this skill (in the US). Run the same search on LinkedIn and the results are in excess of 125,000.

At the same time, the global demand for the language seems to outweigh the expertise available on the market. According to this HackerRank report, 48% of employers worldwide need developers with JavaScript skills, while only 42% of student developers claim to be proficient in it. And, in their most recent report for 2020, HackerRank once again reports that JavaScript is the most popular language that hiring mangers look for in a web developer candidate.

Not only are JavaScript experts in demand—they are also well-paid. In the United States, JavaScript developers earn an average yearly salary of $108,871 per year. We’ve covered this topic in more detail in our JavaScript salary guide, but as you can see, learning this language can really boost your earning potential as a developer.

JavaScript is beginner-friendly

Compared to many other programming languages, JavaScript offers one of the more beginner-friendly entry points into the world of coding. The great thing about it is that it comes installed on every modern web browser—there’s no need to set up any kind of development environment, which means you can start coding with JavaScript right away!

Another advantage of learning JavaScript as your first programming language is that you get instant feedback; with a minimal amount of code, you’ll immediately see visible results. There’s also a huge JS community on sites like Stack Overflow, so you’ll find plenty of support as you learn.

Not only is it beginner-friendly; it will also set you up with some extremely valuable transferable skills. JavaScript supports object-oriented, functional, and imperative styles of programming—skills that can be transferred to any new language you might learn later on, such as Python, Java, or C++. JavaScript provides a crucial introduction to key principles and practices that you’ll take with you throughout your career as a developer.

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