Tips to Become a Java Expert

If you are a Java developer and passionate about technology, you can follow these ten steps which can make you an outstanding Java developer.

  1. Have a solid foundation and understanding of OO principles
    For a Java developer, having a strong kind of object-oriented programming is a must. Without having a solid foundation on OOPS, one can’t understand the good looks of an object-oriented programming language like Java. If you don’t have a good knowledge of what OOPS is, even though you are using the OOP language, you may be still coding in a technical way. Just studying OO principle descriptions won’t help much. We should know how to apply those principles in designing a solution in an OO method. So, one should have a solid knowledge of object modeling, inheritance, polymorphism, design patterns, etc.
  2. Master the core APIs
    It doesn’t substance how strong you are in terms of theoretical information if you don’t know the language constructs and core APIs. In the case of Java, one should have exact strong hands-on experience with core APIs like java.lang.*, I/O, exceptions, collections, generics, threads, JDBC, etc. When it comes to structure web applications, no matter which framework you are using, it’s also crucial that you understand concepts about servlets and JSPs — this is a must.
  3. Keep coding
    Things look modest when talking about them theoretically. We can give a solution to a problem very simply in theory. But we can realize the depth of the problem when we start applying our approach. You will come to know the language limitations, or design best carry out while coding.
  4. Subscribe to forums
    There are lots of people working on the same knowledge that we are working on. While doing a simple proof of concept on a framework may not give you actual challenges, when you start using it on real projects, you will face weird issues and won’t find any answer in their official documentation. When preliminary to work on new technology, the best and first thing to do is subscribe to relevant technology forums. Whatever the issue you are facing, someone else in the world might have previously faced it and found the solution. And it would be really actually great if you could answer the questions asked through other forum users.
  5. Follow blogs and respond
    As I previously told, you are not alone. There are thousands of excited technology freaks around the world blogging their insights on technology. You can also gain valued perspectives on the same technology from other blogs and developers. Some may find specific framework features to be very useful, while others might find those countryside stupid and pointless, giving his own reasons of why he felt like that. So you can see both the good and the bad from other designers using those tools. One more way to gain value from looking at other blogs is to respond/comment on posts with your opinions and questions.
  6. Read open-source frameworks’ source code
    A good developer will learn exactly how to use a framework. But if you lack to be an outstanding developer, you should learning the basics code of various successful, popular frameworks where you can see the internal working mechanism of the framework as well as best practices. It will help a lot in using when by frameworks in a more effective way.
  7. Know the emerging technology trends
    In terms of open-source software development trends, they are developing tremendously. By the time you get a good idea on how to use an exact framework, it risks becoming obsolete as some new framework comes into the picture with super-set of features. Then, the problem you are trying to solve with your in progress framework may be already solved more easily by the new framework with a single line of configuration. So, hang onto an eye on what’s coming in the picture, and what’s going out.
  8. Keep commonly used code snippets/utilities handy
    Over time, you may need to write/copy-paste the same part of code/configuration again and again. Keeping those kind of structure snippets like, JDBC configuration, etc. and utilities like StringUtils, ReflectionUtils, DBUtils will be extra helpful. I know it, itself, won’t create you an outstanding developer. But just imagine some co-developer requests you to help in fetching the list of values of a property from a collection of objects, and then you just used your ReflectionUtil and gave the answer in a few minutes that will make you outstanding.
  9. Know different development methodologies
    Be familiar with many kinds of methodologies like Agile, SCRUM, XP, Waterfall, etc. Nowadays, choosing the development methodology be contingent on the client. Some clients favor Agile and some clients are happy with the Waterfall model. So having an idea on many methodologies would be a real plus.
  10. Document/blog your thoughts on technology
    In a day-to-day job, you may study new and better ways of doing things, as well as best practices, architectural ideas, etc. Keep documenting those thoughts, blog about them, and/or share them crossways the community. Imagine you explained a weird problem that happened while doing a simple POC and you blogged about it. Maybe developers away in the world are facing the same issue on a production-deployed application. Think of how valued that solution is to that developer. So, blog your point of view, they might be helpful for others or to yourself one day!

#java #javatraining #javacareer #javadeveloper #spring-framework

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Tyrique  Littel

Tyrique Littel


How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Samanta  Moore

Samanta Moore


Going Beyond Java 8: Local Variable Type Inference (var) - DZone Java

According to some surveys, such as JetBrains’s great survey, Java 8 is currently the most used version of Java, despite being a 2014 release.

What you are reading is one in a series of articles titled ‘Going beyond Java 8,’ inspired by the contents of my book, Java for Aliens. These articles will guide you step-by-step through the most important features introduced to the language, starting from version 9. The aim is to make you aware of how important it is to move forward from Java 8, explaining the enormous advantages that the latest versions of the language offer.

In this article, we will talk about the most important new feature introduced with Java 10. Officially called local variable type inference, this feature is better known as the **introduction of the word **var. Despite the complicated name, it is actually quite a simple feature to use. However, some observations need to be made before we can see the impact that the introduction of the word var has on other pre-existing characteristics.

#java #java 11 #java 10 #java 12 #var #java 14 #java 13 #java 15 #verbosity

Samanta  Moore

Samanta Moore


Top Tips for Learning Java Programming

If you’re here for the top tips, we assume you’re ahead of the “how to learn Java” part and already boarded on your flight of learning Java. In this lesson, apart from just throwing some do’s and don’ts, we’ll be asking some basic questions that will help you align your path with what’s best for you.

Are you following a plan?

Determining your goal and creating a learning strategy is more significant than you can probably think of. Your ambition, execution, and consistency can make or break your career. So if you want to become a full-time Java Developer shadowing a layout/map goes without saying.

Are you a master of the basics?

Mastering the basics doesn’t necessarily mean learning syntax by heart and not be able to do anything with it. It actually means you’re comfortable working with keywords, know the language protocols, smartly use variables and loops. Know how to choose a data structure depending upon a certain problem. Able to implement object orient approach, since Java is an object-oriented language. Understand encapsulation and how to tamper with it. With this much content freely available widely on the web, newbies are most likely to fell prey to learn more in a shorter period of time. However, you need to understand you can’t build a sustainable building over a weak foundation. Hence, it’s forever helpful to give due time to all the concepts in order to truly “master” them.

#java #learning java programming #java programming #top tips #top tips for learning java programming #programmers

Samanta  Moore

Samanta Moore


Spring Boot and Java 16 Records

In this article, we will discuss Java 16’s newest feature, Records. Then we will apply this knowledge and use it in conjunction with a Spring Boot application.

On March 16th, 2021, Java 16 was GA. With this new release, tons of new exciting features have been added. Check out the release notes to know more about these changes in detail. This article’s focus will be on Java Records, which got delivered with JEP 395. Records were first introduced in JDK 14 as a preview feature proposed by JEP 359, and with JDK 15, they remained in preview with JEP 384. However, with JDK 16, Records are no longer in preview.

I have picked Records because they are definitely the most favored feature added in Java 16, according to this Twitter poll by Java Champion Mala Gupta.

I also conducted a similar survey, but it was focused on features from Java 8 onwards. The results were not unexpected, as Java 8 is still widely used. Very unfortunate, though, as tons of new features and improvements are added to newer Java versions. But in terms of features, Java 8 was definitely a game-changer from a developer perspective.

So let’s discuss what the fuss is about Java Records.

#java #springboot #java programming #records #java tutorials #java programmer #java records #java 16

Seamus  Quitzon

Seamus Quitzon


Learning by Doing: How to Learn Java Basics by Building Your Own Project

Java is not the hardest language to start with. So, it becomes way popular among novice developers joining the ranks of Java coders every single day. If you are reading this blog post, you might be interested in learning Java.

Java is widely used across industry, and especially in the area of Enterprise software, which results in many high paying job opportunities and makes this programming language a common language for newbies. A general promotion of it within colleges and other institutions providing a formal Computer Science education also contributes to its popularity.

However, these are not the only advantages of Java — among other things, it allows you to adopt good practices and makes it way easier to learn other languages in the future. And with no doubt, you can easily learn it if you’re following the right approach. In this post, I am going to share some of them with you.

The Importance of Practice in Programming

Beyond all doubt, practice is important and valuable. But, before we get to the advantages of hands-on experience, I want to draw your attention to one essential thing I often tell my students.

New programmers who are just learning and start implementing things, without being supervised, often end up adapting bad practices. To avoid that, especially when you are making your first steps in programming, I recommend looking for a person who will supervise you and teach you. A strong mentorship with someone engaged in a serious project, as well as communication within the community in the form of sharing code and asking for feedback, is worth the effort. Similarly, when you are applying for your first job, you want to be looking for a company with a strong team and a good leader who would be keen on investing into your learning.

Now, let’s return to practical experience. Learning by doing is different from learning by passively consuming the information. To make sure we can use all the newly acquired technology, we should put our skills to test and write tons of code. The benefits of hands-on experience are almost endless.

Efficiency and Productivity

By practicing, you get a clear understanding of what programming is. Consequently, you start doing better with each new hands-on task, complete it faster, and thus become more productive.

Even if you are not working on real-world projects yet, it’s important to get used to having deadlines. They are inextricably linked to the programming process. My recommendation is to set up your own deadlines while practicing stage and follow them as closely as possible.

#java #learn java #java code #learn java in easy way #learn java course #learn java development