6 Things Java Programmers Should Learn in 2019

Being a Java developer and the creator of a Java blog, I as often as possible get demands from Java programmers from everywhere throughout the world asking how they can improve themselves.

So without squandering any additional time, how about we see my six thoughts for Java programmers in 2019. You can take motivation from these plans to make your very own objectives.

Coincidentally, people, In this post, you won't just discover what to realize but likewise where to learn the same number of my perusers frequently returns to me how they can improve specific skills, where to begin, and so on.

1. Learn Java Performance Tuning


In the last two or three years, I have taken more than 50 interviews for hire Java programmers, and one skill that I observe lacking is knowledge and comprehension about JVM internals, GC conduct, and Java performance tuning.

As your Java experience develops and you become a senior Java developer with more than 5–6 years of experience, it's relied upon from you to know both the 10,000-foot view and the little insights regarding Java's fundamentals.


If you can't create an application or can't make sense how to make it quick, at that point, you should pursue a decent book on JVM internals, and performance tuning, e.g., Scott Oaks' hit Java Performance the Definitive Guide.


If you choose online courses over books, at that point, I recommend you to go for Understanding the Java Virtual Machine arrangement of courses on Pluralsight, which clarifies memory management, class stacking, Security, and Reflection.

2. Code Everyday for 2 hours

When you develop your experience as a developer, you invest your energy in coordination, answering messages, being an impetus, troubleshooting, coaching, and for the most part being a project manager in MNC.

And you are getting far from coding, which is the absolute most significant skill for a developer.

If you feel that you are not doing what's needed coding, at that point, make a goal to code each day. In any event, compose something, be it on your project, an open-source structure, a library, or a utility.

You can likewise tackle issues given in Cracking the Coding Interview, 189 Programming Questions. This won't just ensure you're prepared for a meeting, but additionally improve your knowledge of information structures, algorithms, and programming rationale.

3. Build Your Java application Once per Month

This tip is connected with the primary advice about pursuing a decent book on JVM internals or potentially join a seminar on Java performance tuning. Btw, Just reading the book or joining a course won't be sufficient. You need to apply that knowledge in your live project.

I recommend you profile your Java application, at any rate once every month and invest a decent measure of energy understanding and dissecting the outcomes.

You can likewise take a store dump of your Java procedure, or, if you had an ongoing accident, at that point accept that load dump and discover which object is taking a large portion of your memory.

What is the reason? What will occur if other 100K new customers get to your application? If you can respond to every one of these inquiries easily, at that point, you are fit as a fiddle.

4. Take an interest in Coding Challenges

This objective is, once more, to some degree identified with our second resolution — write code each day for 2 hours. At times, you don't have enough possibilities in your live project to code.

If you are starving for testing code, at that point, there is nothing superior to taking an interest in programming and coding challenge.

There are numerous sites on the web that host programming difficulty and offer you the chance to test your skills, but TopCoder is essentially the best.

If you are searching for some extreme programming difficulties, at that point, you can likewise look at my rundown of good sites to work on coding.

5. Learn Network Programming in Java

One more thing I have gained from talking individuals is that Java developers need to improve their socket programming and systems administration fundamentals.

I have posted numerous inquiries from my own list of Java systems services programming questions, but most developers neglect to answer a large portion of them.

Some of them even battle to plot the key differences between TCP and UDP, which I thought was too essential to also consider asking any Java developer of 2–5 years of experience.

If you feel that you have not gotten enough chances to learn socket programming in Java or that you don't have to because you are Java web developer working with JSP, Servlet, and JSF, at that point I recommend you read at any rate one great book on Java systems administration, NIO, and socket programming.

One book I exceptionally suggest is TCP/IP Sockets in Java, Second Edition, Practical Guide for Programmers. It's anything but difficult to peruse, intriguing, and a decent method to get familiar with the fundamentals of socket programming.

6. Java 12

Last a couple of years have seen several significant discharges, and one of them was JDK 12. I still can't seem to begin with JDK 11, disregard 12, but this is the principal thing I am going to investigate in 2019.

If you need to adopt new features of Java 9 like Jigsaw, Reactive Streams, API improvements, and so on., at that point the Java 9 MasterClass is a decent course, to begin with.

Thus for Java 10 features like var for local variables you can check a decent seminar on Java 10 like The Complete Java MasterClass which is additionally most cutting-edge and as of late refreshed for Java 11 also.

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