If you’re a software developer, you’ve undoubtedly heard of “coding challenges”.

Coding challenges are a fun way to learn how to code & prepare for coding interviews, but they can also be a useful way to improve your skills and knowledge.

In this post, we’ll give you the tools you need to start coding challenges on your own. We’ll also discuss how to start a coding challenge, what types of challenges you can start, and how to analyze the results of your challenge to help you improve your skills. 

First, let’s cover some of the basics. 

What is Java?

If you are reading this, we’re going to go ahead and assume you already know what Java is. However, on the off-chance that you aren’t familiar, let’s offer a brief explanation! You may be familiar with the term, but might not be too clear on what it actually is.

Java is a programming language that first emerged in 1995. It is now used for countless websites, which your browser will not be able to open unless Java is installed. Full stack api Java developers are capable of creating Java applications from start to finish. To get a job in this area, you may need to complete Java coding challenges. 

What are Coding Challenges?

Simply put, coding challenges are tests sent out by software companies to test the coding skills of prospective employees. Think of them as the job interview of the coding world. They are used to give software companies an idea of your coding capabilities. A formal interview may follow, but coding challenges are usually the first hurdle to cross.

As Java is one of the oldest and most widely used coding languages out there, it is pretty likely that you will run into a Java coding challenge at some point. Preparing for this could mean the difference between your new position as a web developer or another rejection. 

With that in mind, we have compiled some of our top tips for Java coding practice for beginners. These are applicable for newbies and veterans alike, so wherever you are in your programming career, you’ll find something of interest below!

Make Sure You Know The Challenge Instructions

Remember how your teachers would always tell you to read exam questions thoroughly before attempting them? Well, it turns out that advice has other applications too. You would be surprised how many candidates fail a coding challenge simply because they didn’t follow the instructions properly.

Whether you are simply doing a practice run or doing a challenge for real, your first job should always be to read the instructions carefully. It might not be the most interesting way to spend your time, but it could make the difference between success and rejection. 

One of the best ways to do this is to construct a to-do list from the instructions. Go through it, step by step, and plan out what you need to do with the data provided. This should help you to picture exactly what problems you need to solve and what your final output should look like.

Test Your Solution Before Final Submission

The best laid plans still go awry, and the same is true for coding challenge solutions. Before turning your solution to your (potentially) future employer, make sure you have done sufficient testing. It can also be a good idea to demonstrate that your solution is means tested, as employers will look favourably on this.

If the coding challenge has a tight deadline, you might feel tempted to throw tests out of the window. Who has the time? Well, frankly, if you want to impress, then you need to find the time. Though testing your input may increase how long it takes you to finish, it is always better for you to find errors in your solution than the employer. Don’t cut corners, test, test, test!

Make Sure Your Work is Clear

Once you have completed the coding challenge and ran all the necessary input tests, you should look over your work to ensure that it reads well. Naturally, the tester will have a knowledge of code too, but there are still several steps you can take to improve readability.

An easy way to make your work clearer is to separate it into easy-to-read sections. Nobody enjoys a dense wall of text staring at them, not even experienced software developers. Wherever possible, practice breaking up your coding into smaller sections. The tester will thank you, and it will make your solution more effective overall.

You should also take some extra time to ensure classes, methods, and variables are all named appropriately. Avoid single-letter names or symbol names. Try to keep them as relevant to the action executed as possible. This can work to avoid confusion later on. 

Don’t Try too Hard to Sound Flashy

If the coding challenge you are completing is part of a recruitment process, it is natural that you want to impress. However, typical mistakes that new software developers often make is to include overly-complicated or catchy one-liners in their work. This could undermine your solution.

Condensing your information so it’s easier to read is one thing, but there is a time and place for snappy catchphrases. While it may be tempting to make use of a flashy statement in your solution explanation now and again, it could go over the tester’s head, which brings its own set of problems.

Practice, Practice, Practice!

The single best way to prepare for future Java coding challenges is to practice the hundreds that are dotted around the web. Familiarising yourself with graph data type, set data type, string data type, and more will prevent you from making typical mistakes, which could cost you a job! It’s cliche, but practice makes perfect, so what are you waiting for?