Tuesday, December 31, 2019

Top 10 IT Certifications for Java Developers in 2020

Hello guys, I wish you a very Happy New Year 2020. One of the best things about the New Year is that it encourages and motivates you to achieve. It helps you to look forward and make goals and bring a lot of enthusiasm to you. Many programmers make a goal to learn a new programming language, a new framework, a new library, a new tool, or to get some certifications under the belt to make themselves more valuable. I have shared some of them in updated The 2020 Java Developer RoadMap, just in case if you need some inspiration. Coming back to this article, Recently, I received an email from one of my readers who is asking about which Java certification should he do this year? I asked him back, which Java certifications he has done and how much experience he has in the Java field?

Top 5 Courses to Learn Hibernate and JPA in 2020 - Best of Lot

Hibernate is one of the essential frameworks for Java and Java EE or JEE programmers, especially if you are working on the server-side of a Java Web development project. It's an ORM tool or a framework that allows you to deal with only objects while Hibernate takes care of your data on your behalf. For example, instead of writing classes with SQL to load, save, and update data using the DAO design pattern, you can simply use the Hibernate framework in your project. It will allow you to deal with just objects while it will load, save, and update data in the background. It's also one of the top Java frameworks in my list of top 10 Java frameworks Programmers can learn.

Monday, December 30, 2019

Top 5 Courses to Learn GraphQL in 2020 - Best of Lot

Hello guys, you might have heard about GraphQL, another exciting technology. GraphQL is gaining a lot of popularity because of its superiority over traditional REST APIs. Many big companies like Facebook, Coursera, Github, and Yelp have already started using it, which has also helped a lot in terms of gaining popularity. There is a good chance that you might have already have heard about GraphQL in blogs pots, on Medium, or, in general, Web, but like many others, not sure whether it's worth learning or not, and if yes, from where to start. Well, I have been learning GraphQL since last week, and I would like to share some of the resources I have been using for my learning.

Top 5 Online Courses to learn Cloud Computing in 2020 - Best of Lot

Cloud Computing is becoming an essential skill for any Software developer or IT professional today as more and more companies are moving towards Cloud for their infrastructure and service needs. It pays to learn Cloud Computing today as the most likely application will be solely building and deploy in the cloud in the future. No matter what your role is, if you are working in technology, cloud computing is going to affect you, one way or another. Anyway, if you want to learn cloud computing then you have come to the right place, in this article, I am going to share some of the best courses to learn Cloud computing basics in general and with AWS and GCP in particular.

Sunday, December 29, 2019

5 Spring Framework Books Experienced Java Developers Should Read in 2020

The Spring framework has changed a lot in the last couple of years. We have seen significant releases for Spring, Spring Boot, and Spring Security. These new releases introduced several exciting features to meet the latest software development trends, like Reactive programming, support for Kotlin for developing Spring application, Spring WebFlux - a new framework to build non-blocking and reactive web applications,  and many more. Since the software world is changing and most of the development is happening on Cloud with Microservice architecture leading the way, it's high time that experienced Java developers should upgrade themselves.

Saturday, December 28, 2019

How to Create Online Courses for FREE in 2020

I have been telling my readers and fellow programmers to create an online course in 2020, and many of them have already started about planning their courses. Though, one question which keeps coming to me is how you can create an online course free? This is an obvious question, and after answering many of my readers over facebook chats and emails, I decided to write a blog post about it so that everyone else who wants to create an online course for free without any investment except time and passion can benefit. Before answering this question, let me first congratulate you on making an excellent decision to create an online course, my typical win-win situation where everybody involved in this process wins.

10 Free Websites to Learn Git for Beginners in 2020

I have worked with a lot of source control systems like SVN, CVS, TFS, VSS, Mercury, and I had always wondered why so many source control systems? Why not just one. It's one of the necessary software tools for development, and everyone needs a version control and code repository, there should be a standard solution. It seems Git and Github have solved that problem now. Now, Git is everywhere from open source to closed source, from small startups to big Investment banks, but there were still legacy projects which were lying on SVN and CVS, but they are now also started moving towards it. Until last year, I was working on at least one project on SVN, but now that has also moved to Git. This shows the dominance of Git, and that's why it becomes essential for both new and experienced programmers to learn Git and Github.

Top 5 Courses to learn iOS 12 and Swift 4 in 2020 - Best of Lot

Hello guys, Happy New Year. It's that time of the year when we all start making our goals for better health, improving ourselves and learn new things. Last Year, I focused mainly on the Web Development side and spent time teaching React, Angular, and Node JS, but this year, one of my goals is to explore the mobile world, particularly iOS and Android. At least that's a thought for now, and I am not sure how long I can go given the limited time I get to upgrade myself, but I'll try my best. Btw, if you also have the same goal and want to become an iOS developer in 2020, then you should start your journey by learning iOS 12, the latest version of Apple's Operating system which runs on iPhone and iPad and Swift 4, Apple's programming language for creating iOS apps.

Friday, December 27, 2019

Top 5 Courses to Learn Programming in 2020 - Best of Lot

Programming and/or Coding is one of the essential skills for today's technological world, and awareness of coding is growing every passing day. In my time, about 20 years back, I only learned to code when I entered engineering college to pursue Computer Science and Engineering degree, but things have changed a lot since then. Nowadays, even kids have started learning to code, even my daughter can code and much better than what I can also do in college. More accessible computing gadgets like iPad, iPhone, Smartphone, and Laptops have genuinely changed the environment and made Coding or Programming more accessible.

Top 10 Courses to Learn Angular and React.js in 2020 for FREE - Best of lot

There is no doubt that both Angular and React (also known as Angular JS and React JS) are two of the most popular frameworks for modern web development, particularly front-end development. It was Angular who started the new way to develop a web application using JavaScript, but now React, and Vue.js is taking that to another level. I have seen more and more people are learning React in recent time. Btw, today's world is all about full-stack developers like you should know how to develop a web application end-to-end, starting from front-end to back-end, and that's why as a full-stack Java developer, you should React or Angular Framework.

Thursday, December 26, 2019

Top 10 Technology Jobs Programmers and Software Engineers Can Aim in 2020 to Earn Better Salary

If you are a Computer Science Graduate or someone who is thinking of making a career in the Software development world or an experienced programmer who is thinking about his next career move but not so sure which field you should go then you have come to the right place. In this article, I will tell you the top 10 highest paying technical jobs you can aim for. All you need is some Programming and Coding experience and a passion for learning. Particularly the Machine learning and Data science field looking very promising for fresh Computer Science graduates, beginners, and experienced programmers.

Top 10 Pluralsight Courses For Java and Web Developers to Learn in 2020 - Best of Lot

Since last week, I have been sharing about my 2020 learning goals and what Java programmers should learn in 2020, but I haven't shared with you how will I learn those new technologies, e.g., Git, Angular JS, React JS, Spark, and Machine learning, etc. Well, there are many ways to learn a new technique or programming language, 10 of which I have shared in my earlier post about how to learn new technologies. Still, two of the best ways to learn any new technology are by using online courses and reading books. I have been learning from books since my childhood, but ever since I have tried learning from online classes, I found them more interactive and useful.

Wednesday, December 25, 2019

10 Things Java Programmers Should Learn in 2020

It's 24th December now, and only a few days have left in the year 2019. It's an excellent time to look back and retrospect what you achieved in 2019 and what you could have done better. This will help you to create your goals for 2020. As a programmer, our biggest challenge is to keep ourselves up-to-date. Technology changes very fast, and you will see a new version of programming language and framework coming to every couple of years. This year has plentiful changes with keeping up-to-date with a new Java version every 6 months, Spring 5, Spring Security 5, and Spring Boot 2; it's probably the busiest year in terms of changes for Java developers.

Top 5 Books to Learn Python in 2020 - Best of Lot

Whether you are an AI expert or a Computer Science student, you will come across Python Programming language sooner or later in your career. Starting its journey in 1991, Python has now captured the Programming world. Started as just a scripting solution for trivial stuff, Python is now everywhere. With its excellent libraries and frameworks, Python is driving Data Science, Web Development, Machine Learning, Server Side development, Automation, and General Programming stuff, and that's why it makes sense to Learn Python. Unlike some programming languages like Java or C++, which is good for server-side and complex programs but not suitable for simple things, because of its excellent libraries and vibrant community, you can do almost everything using Python from object-oriented programming to writing simple scripts.

Top 5 Courses to Learn Dynamic Programming for Coding Interviews - Best of lot

Hello guys, If you are looking for a job and giving interviews then you might have noticed that getting a Software development Job is becoming more and more difficult every day. For example, there was a time when you can get a Java developer position by just knowing Core Java concepts like String, Collections, and Multithreading, etc, but, not anymore. There were definitely some questions on Data structure and Algorithms and even on Dynamic Programming that time as well, but the focus was always on programming language expertise like Java or Python. But, things have completely changed now, and the focus is more and more on the candidate's ability to solve coding problems.

Tuesday, December 24, 2019

Top 10 Data Science Courses and Certification to Learn in 2020 (Python and R) - Best of Lot

Hello guys, Data Science, Machine Learning, Deep Learning, and Artificial intelligence are really hot at this moment and offering a lucrative career to programmers with high pay and exciting work. It's an excellent opportunity for programmers who are willing to learn these new skills and upgrade themselves. It's also important from the job perspective because Robots and chatbots are getting smarter day by day, thanks to these technologies, and most likely will take over some of the jobs which many programmers do today. Hence, it's essential for software engineers and developers to upgrade themselves with these skills. Programmers with these skills are also commanding significantly higher salaries as data science is revolutionizing the world around us.

Pluralsight vs Codecademy - which is Best Online Learning Platform to learn coding?

As a programmer, the most important thing is to keep yourself up-to-date. If you don't, your skills will become obsolete, and you may not be Marketable. Being an author of a Java blog and editor of a Medium publication, I receive a lot of queries from Programmers and Developers. Many of my readers ask me about advice like which books to learn to code, which is the best site to learn to code? Where should I go for preparing coding interviews and much more? One of the questions which keep coming to me was about Pluralsight and Codecademy? Like which site is better to learn new tech skills and level up your current skill? This is an essential question because learning is an essential part of professional programmers' careers. If you don't learn new things or upgrade yourself, you will leave behind in your job and career.

Monday, December 23, 2019

Top 5 Courses to build Chatbots using AI in 2020 - Best of lot

Hello guys, do you want to learn how to build chatbots? the darling child of Artificial Intelligence? If yes, then you have come to the right place. I have helped many of my readers who wanted to build chatbots but didn't know where to start? I think joining an online course is a good idea, and if you are looking for some online courses, then you will find some good ones here, but before that, let's talk about chatbots. If you are not living under the rocks, you might have seen several applications of chatbots like in your online banking portal or any other websites. Many companies like Apple, Google, Microsoft, and Amazon are investing millions in building their own AI-powered chatbots like Siri, Google Assistant, Cortena, and Amazon's Alexa. They all are chatbots, primarily the voice-based chatbots.

Top 5 Courses to Learn Python 3 in 2020 - Best of Lot

If you are a Programmer or a Computer Science graduate and thinking of learning Python in 2020, then you have come to the right place. In this article, I am going to share some of the best online courses to learn Python in 2020. Python is one of the most popular programming languages, and it's used in many domains, like Web development, Automation, Data Science, Machine learning, etc. In recent years, Python has also become a default language for Data Science and Machine learning Projects, and that's another reason why many experienced programmers are learning Python in 2020. It's also one of the top languages on my list of programming languages to learn in 2020. But, for all its power and flexibility, Python is still a straightforward language to learn and often touted as a beginner's programming language.

Udemy vs Pluralsight Review - Which is better to Learn to Code and Programming?

Hello guys, how are you doing? I am again back with answering one of the familiar doubts among online learners, Pluralsight, or Udemy? Which are the better websites for learning code and leveling up your programming skills? As a Java blogger and editor of a Medium publication, I often receive questions like this from my readers. Earlier I have answered questions like Pluralsight vs. CodeCademy and Udemy vs. CodeCademy but never explained about Pluralsight vs. Udemy, which many of my readers have been asking from a long time. Since Pluralsight and Udemy are two of the most popular online learning platforms and me also spend considerable time every day on each of them, I felt to write my review of Udemy and Pluralsight and explains pros and cons of both Udemy and Pluralsight so that you can make an informed decision when it comes to learning tech skills online.

Sunday, December 22, 2019

Top 5 Courses to Learn Flutter in 2020 - Best of Lot

If you are like me, who thinks Flutter is the future of mobile development and looking for some excellent online courses to learn Flutter, then you have come to the right place. In this article, I am going to share some of the best online courses to learn Flutter in 2020 from Udemy, Pluralsight, and Coursera, but before going into that, let's see what Flutter is and why everyone is so excited about it. Well, in general, whenever something comes from Google, it makes a lot of developers excited like Angular, Dart, and now Flutter. I have got my hand dirty in both Android and iOS using Java and Objective-C in the past, but after working for some time, I decided to move on.

Top 5 NoSQL Databases Programmers Should Learn in 2020

Though it's not mandatory for Java or Web developers to learn the NoSQL database, the world is moving in that direction, and both Java and Web developer should be familiar with NoSQL databases. If you are wondering what NoSQL database is means, then here is a quick overview. A NoSQL database refers to non SQL, non-relational, or not only SQL) that provides a mechanism for storage and retrieval of data, which is modeled in means other than the tabular relations used in relational databases. With Spring 5 introducing Web-Flux, a new non-blocking web framework, the use of a NoSQL database will only grow, but the big question is which NoSQL database to start with?

Top 5 Courses to Learn How to Create Online Course Which Your Student Will Love

There is something about online courses that makes learning so easy. They are affordable, convenient, and accessible everywhere. More and more experts are now teaching online so that now there are so many high-quality courses available on the internet to learn almost anything. It wasn't like that a couple of years ago when books and tutorials were the primary resources for learning new skills, but there is a huge potential still for both learners and creators when it comes to online courses. I have been championing this and partnering with many of my students/readers to create online courses and actively encouraging them to build a sustainable online business as a side hustle along with programming.

Saturday, December 21, 2019

The 2020 React Developer RoadMap - Guide to become a Modern Frontend Web Developer

The React JS or simply React is one of the best JavaScript libraries for developing front-end or GUI of web applications. Backed by Facebook, React JS, also known as just React is has grown by leaps and bounds in recent years and became the de-facto library for component-based GUI development. Though there are other front-end frameworks like Angular and Vue.js available, what sets React apart from others is maybe the fact that it just focuses on component-based GUI development and doesn't invade on other areas.

Top 5 Courses to Learn Spring Boot in 2020 for Java Developers - Best of Lot

Hello guys, if you are interested in learning Spring Boot and looking for some excellent resources, e.g. books, tutorials, and online courses to start with, then you have come to the right place. Earlier I have shared some great books to learn Spring Framework, including Spring Boot (see), and today, I'll share some of the best online Spring Boot courses you can join to learn Spring Boot by yourself. In the past, I was a big fan of learning from a book, but online courses have changed that completely. Now I prefer to start with an online course, like Spring Boot Essentials, and then move on to a book like Spring Boot in Action for more comprehensive learning. Anyway, before going through those Spring Boot courses, let's first revise what Spring Boot is, and it's benefits and why you should learn it.

Friday, December 20, 2019

10 Reasons to Learn Python Programming Language in 2020

If you are a regular reader of this blog, then you may be wondering why am I writing a blog post to tell people to learn Python in a Java blog? Didn't I ask you to prefer Java over Python a couple of years ago? Well, things have changed a lot since then. In 2016, Python replaced Java as the most popular language in colleges and universities, and since then, it has never looked back. Python is growing and growing big time. If you read programming and technology news or blog post, then you might have noticed the rise of Python as many popular developer communities, including StackOverflow and CodeAcademy has mentioned the growth of Python as a dominant programming language.

Top 10 Courses to Crack Coding Interviews in 2020 - Must Join Best of Lot

To be honest with you, getting your first job is never easy. It is, in fact, the most laborious task, and you need to put your best effort into finding a role in your dream company. Most of the computer science graduates dream of working for Google, Facebook, Amazon, Microsoft, and Apple, but they often not able to clear their rigors coding interviews. The single most important reason for failing those coding job interviews is a lack of knowledge and practice; hence, it becomes increasingly important that you prepare hard in advance. Unfortunately, I learned this little too late after spoiling my chances at Microsoft and Amazon, but you can learn from my experience and prepare better for your programming job interviews.

Thursday, December 19, 2019

12 Things Every Programmer and Software Developers should Learn in 2020

If you have been doing software development for some time or just looking to learn to code, then you might be thinking about what makes a good programmer? What should a programmer learn in 2020 to become a better developer? What computer science graduate can do to prepare for a career in software development and programming? What are the things expected of a junior developer are some of the common questions I receive from many students on Facebook and Emails who follows me. These are mostly college students who now have access to a wealth of information thanks to the internet and eager to learn things in advance to prepare for their programming job interviews.

Top 5 courses to learn Pandas and Python Data Analysis in 2020 - Best of Lot

Pandas is one of the most potent and popular Python libraries for Data Analysis. It's also one of the favorite tools for Data Scientist because it helps them in cleaning, transformation, manipulation, and analysis of Data. To be honest, data in the real world is messy, and before you can start with your analysis, you need to clean and transform the data in the format you want. A tool or library like Pandas really helps there. That's why it's essential to learn about Pandas while doing Data Analysis with Python. It's even more critical if you are in the field of Data Science and Data Analysis. If you know Paands, well and good, but if you don't nevermind, as I am going to share some of the best online courses to learn Pandas and Data Analysis with Python in 2020.

Wednesday, December 18, 2019

How to Crack Java SE 11 Certification in 2020 - The Complete Guide

If you have heard that Java SE 11 Certification is the toughest of Java certification at the developer level, then you have heard it right. It's indeed one of the difficult certifications to crack, and It's much harder than OCAJP 8; its the predecessor, and some of the programmers who have attempted it calling it even harder than OCPJP 8, a professional-level certification. In order to crack Java SE 11 certification, you need to prepare hard, but, at the same time, you also need to know which areas you should focus on. What topics should you spend more time on and which books and courses can help you to learn those essential topics?

10 Tools Used by Java Programmers in Day to day life

Every trade has its tools, and Java programming is no exception. In fact, good knowledge of tools and mastery of using them saves a lot of time in design, development, testing, debugging, and troubleshooting any production issue. To become a good developer, you must know the right tools for the right jobs. A developer without tools and tricks is like a toothless lion; hence you must devote some time to learning tools required for your day to day job. Many developers think that learning an IDE like Eclipse, NetBeans, or IntelliJ IDEA is enough, but that's just the start of the process. No doubt that IDEs are the most important tool ever created for programmers, but they are not the solution for everything.

Top 5 Courses to Learn Spring Framework in Depth in 2020 - Best of Lot

Spring Framework is an essential skill for Java developers, not only to get a job as a Java developer but also for your career advancement. Since Spring is now used in almost every Java project, it becomes virtually mandatory to learn Spring framework. Now, the question comes, what is the best way to learn Spring framework? Are there any online courses out there that are focused on Spring? What are some good books and resources for learning Spring? These questions are widespread among Java developers, and I often see them on forums, online chat channels, and even many of my readers also ask this to me on Facebook chats and email. Well, the best way to learn any technology is by coaching, online courses, and books.

Tuesday, December 17, 2019

Top 5 Courses to Learn Software Architecture for Experienced Programmers - Best of Lot

Every Programmer wants to grow in their career, but it's not easy, and if you don't pay attention to your job, you will likely stay in the same position for many years. The growth in the initial few years is generally fast. Still, once you reach the barrier of 5 years, you need to decide which direction you want to move like - people management, product management, or software architecture. For tech guys, who don't want to go on people and product management, the software architecture or solution architecture is the final position, which is not surprising.

Top 3 Programming Languages Java Developers Can Learn in 2020 - Kotlin, Scala, and Groovy

If you are a Java programmer and thinking to learn some news programming languages to expand your knowledge and skill, but not sure which programming language is better for you then you have come to the right place. In this article, I'll share 3 programming languages Java developers should learn in 2020 and why they should learn them. There is no surprise that all of these programming languages are JVM based programming languages but they all have different qualities which makes them unique and useful for a certain task. Also, being a Polyglot developer is good quality and often valued high on interviews. It also expands your thinking because different programming languages have different features which make certain things really easy.

Monday, December 16, 2019

10 Unit Testing and Automation Tools and Libraries Java Programmers Should Learn

In last a couple of weeks, I have written some articles about what Java developer should learn in 2019 e.g. programming languages, libraries, and frameworks, but if you have just one thing to improve or learn then that must be your automation testing skills. Testing is one of the disciplines which separates professional developers with amateur ones. It's not about following TDD, BDD, or whatever testing methodologies but at the very minimum level, you must write code to test your code automatically. Many Java developers write unit tests and integration tests which automatically run during build time, mostly by using continuous integration tools like Jenkins or TeamCity.

Tuesday, November 19, 2019

Top 10 Gift Ideas for Programmers, Software Engineers, and Tech Geeks

My friend circle has a lot of programmers and non-programmers. When it comes to buying gifts for birthdays, anniversary, or holidays, I receive a lot of queries from my non-programmer family and friends about what to buy for a programmer? Well, buying a gift is easy but choosing or finding the right gift for someone is really really tough. I have had this experience when it comes to buying gifts for kids. I know they like toys but my wife told me to buy something more valuable, which not only keeps them engaged but also provides value, help them in learning and they appreciate every time they use. That's a lot to cater to one gift, but that's the perfect gift, isn't it?

Top 10 Computer Programming, Artificial Intelligence, and Sci-Fi Movies Programmers Should Watch

Guys, It's a fun time here, as Holidays are approaching, it's Movie time for many of us. Being a computer programmer, I love movies which are based on programmers life, work, and concept. Thankfully Hollywood is no short of films based on computers, programming, and geeky technical stuff. Another day, I was pretty bored, and when I look back to my DVD collection, I found Inception, Matrix Reloaded, and The Social Network, this all movies are in some way related to computers and technology, which strike me the idea to publish my list of Top 10 Computer programming movies.

Top 10 UNIX and Linux System Programming Books- Best of Lot, Must Read

I have been sharing programming books in this blog for a long time, starting with core Java; I moved to other related technology, like Spring, Design patterns, Data Structure and Algorithms, etc. Today, I am going to share some of the best UNIX and Linux programming books. The list contains some of the must-read UNIX books from great writers like Sir Richard. Stevens, Sir Brain Kernighan, who has contributed so much to the development of the UNIX operating system. Most of the books on this list are timeless,  classic, and don't age with time, much like UNIX, which is around for the last 40 years, and I am sure it will be around for the next 40 years, or maybe forever.

Monday, November 18, 2019

Top 5 Courses to learn C# (C-Sharp) in 2020 - Best of Lot

If there is one programming language that deserves more credit, then it currently receives from developers, than it would be C# or C-Sharp. When we talk about popular programming languages, we mostly talk about how Java is ruling the programming world from the last three decades, how JavaScript changed the web world, or how Python has taken over all programming languages in last couple of years, but we seldom mention C#. If you follow the StackOverflow survey, then you know that C# is always one of the top 5 Programming languages rated by programmers, and this year also close to 31.0% has said that they use C#, which is significant.

Sunday, November 17, 2019

How to send HTTP request using curl and wget command from Linux and UNIX? Example Tutorial

You can use either curl or wget command to send HTTP requests from UNIX or Linux operating system. Both commands allow you to send GET and POST requests, which means you can also call REST web services.  I have a Java web application, which runs on Linux and exposes WebServices. I was writing a UNIX script to download In some data from that web service when I hit by the question, how do I make an HTTP call from UNIX? What is the UNIX command should I use? If you are also facing the same problem, then you have come to the right ht place. Basically, you can use two UNIX commands to make the HTTP request, wget, and curl.

Top 5 Books to Learn Scala and Functional Programming - Best of Lot

Scala is one of the relatively new programming languages which encompasses best practices of many programming languages. The biggest strength of Scala is that it provides a beautiful blend of object-oriented programming and Functional programming. So, you can not only construct elegant class hierarchies for maximum code reuse and extensibility, but you can also implement their behavior using higher-order functions. It has a concise syntax with less ceremony, which also makes it ideal for scripting but doesn't underestimate its power. Like Java, Scala has also used for mission-critical applications by technical giants like Twitter, LinkedIn, and Intel.

Saturday, November 16, 2019

Top 5 Courses to Learn The C Programming in 2020 - Best of Lot

Hello guys, today, I am going to talk about one of the oldest, powerful and a programming language which has survived 50 years. Yes, that's right, 50 years. It's a great achievement for any technology to remain relevant for such a long period. If you don't know, the C Programming language is one of the first general-purpose programming language, invented by Dennis Ritchie and Ken Thomson around 1969. Ken was writing UNIX, another accessible technology that has survived for 50 years around the same time and needed a programming language that can do all kinds of tasks; the result was C programming language.

Top 5 Courses to Learn IntelliJIDEA and Android Studio IDE for Java Programmers

There is no doubt that IntelliJ IDEA is THE best IDE for Java development, even though Eclipse may still be probably used by more people because it's FREE, IntelliJ IDEA is the most feature-rich and complete IDE. The Android Studio, which is the official IDE for Android development in Java, is also based upon IntelliJ IDEA, which further cement its place as the IDE Java developer should learn. The only thing which stops many other Java developers and me from moving from IntelliJ IDEA in the past was the lack of resources. Since Eclipse was free from the start, there are tons of resources, e.g., books, courses, and tutorials are available. There are also a lot of resources to learn productivity tips, e.g., keyboard shortcuts and debugging techniques, but there were not many for Intelli IDEA.

Friday, November 15, 2019

10 Example of find command in UNIX and Linux

The find command is one of the most versatile commands in UNIX and Linux, and I used it a lot in my day to day work. I believe having a good knowledge of find command in UNIX and understanding of its different options and usage will increase your productivity a lot in UNIX based operating system, e.g. Redhat Linux or Solaris. If you are a QA, support personnel, and your works involve lots of searching text on Linux machine or if you are a Java or C++ programmer and your code resides in UNIX, find command can significantly help you to look for any word inside your source file in the absence of an IDE. It is the alternative way of searching for things in UNIX; grep is another Linux command which provides similar functionality like find but in my opinion, later is much more potent than grep in UNIX.

Top 5 Hibernate Books for Java Developers - Best, Must read

Hibernate is one of the most popular, open-source ORM (Object Relational Mapping) framework, which has now become a standard for developing persistence layer on Java enterprise application, along with JPA (Java Persistence API). I often receive requests to suggest which book is best to learn to hibernate or recommendation about some good books and training courses on Spring and Hibernate. This motivates me to write this article about some of the best books on Hibernate currently available on the market. Earlier I have shared some of the must-read books on Spring framework for a Java developer, which is quite helpful for picking a book in Spring. Similar to the Spring framework, experience in Hibernate is the most sought after thing in Java JEE development roles.

Thursday, November 14, 2019

10 Example of lsof commands in Linux and UNIX

It's been a long time since I have written anything on UNIX or Linux commands. Still, today, I'll talk about the lsof command, a utility command every system admin and developers love. The lsof command stands for list open file descriptors, and as the name suggests, it is used to find open files by the process. Since almost everything in UNIX are file, you can use lsof command to find an open regular file, a directory, a symbolic link, a special block file, an NFS mounted file, a socket stream, a shared library, a special character file, a regular pipe, a named pipe, an internet socket, a UNIX domain socket, and many others. I have mostly used it to find all the files opened by a particular process, which I will show you in the next section.

Wednesday, November 13, 2019

10 reasons to Learn Scala Programming Language

One of the questions my reader often ask me is, shall I learn Scala? Does Scala has a better future than Java, or why Java developer should learn Scala and so on. Well, there can be many reasons for learning Scala, e.g., you are forced to learn because it been used in the new company you joined or your solution architect decided to use it, but that's a different story. Here, we'll talk about reasons which encourage Java developers to learn Scala.  Scala has emerged as one of the most powerful Java alternatives in recent times. It's been the JVM language of choice, leaving Groovy and Clojure way behind, and preferred as the language people want to write most code in.

Top 5 TensorFlow and Machine Learning Online Training Courses for Programmers

If you are curious about Artificial intelligence, Data Science, and Machine learning, then I am sure you have heard about TensorFlow, Google's machine learning API, which they have used to develop the RankBrain algorithm for Google Search. TensorFlow is one of the most popular machine learning API, which allows you to automate several real-world tasks; for example, you can use it for image detection. In fact, a Japanese farmer turned programmer used it to detect the best quality Cucumber, which only his father and mother can do it with his years of experience. That's the power of machine learning, which is now available to everyone because of TensorFlow.

Tuesday, November 12, 2019

10 JDK 10 Features Java Developers Should Know

Hello Guys, while we all are talking about Java 9 and some people are yet to adopt Java 8 in their projects, here comes the new release of Java, the JDK 10. It's available to download now on Oracle's website. This is the first release in the latest release schedule, where you have a new Java release every six months, I know it's quite early, but that's a reality now. Apart from 6 monthly release, Every 3 years there is an LTS release, which is sort of major Java release. The next LTS release is Java 11 which should be out in September. So you can aim for that. Then you can update three years after that to the next LTS release.

Top 5 Android Online Training Courses for Java Developers - Best of Lot

Java has been very lucky that Android uses it as a programming language. This opened a big door of opportunities for Java developers in Android app development. Many people ask me why Java Developer should learn Android? My simple answer is that good knowledge of Android OS improves your chances of getting a job and making a difference in people's lives because Android Apps are a direct way to connect billions of people. Android is, without a doubt, THE biggest mobile platform in the world, with over 80% market share and over billions of devices running Android. By creating apps for such a big platform, you have an excellent opportunity to make a difference.

Monday, November 11, 2019

Top 10 Most Popular Programming Languages of the Last 50 Years and their Inventors

There are many programming languages out there in the software world, and they are still coming like Scala, Go, Closure, etc., but the only handful of them have managed to survive to date. These are the ones who have contributed immensely to software development. Since programming language is a single most important thing in the software development world, it's often discussed, criticized and improved over the years. Programmers and developers, who those programming languages are icons of the programming world and sometimes I feel sad when a guy using a programming language doesn't know, who is behind that.

How to Enroll on Spring Professional Certification and Schedule Exam using Voucher Online - Step by Step Guide

So, you have been preparing for Spring certification for quite a sometime, and now you feel you are ready to take the exam, and it's time to buy the Spring certification voucher and schedule your exam. In this article, I'll show you how to buy the Spring certification voucher online. But, before purchasing a voucher, I would like to remind you that the Spring certification voucher is only valid for 90 days, after that it will expire. So, it's best to buy the voucher only if you are ready for the exam i.e. you have gone through several Spring Mock tests and practice tests given in Spring study guides and you are consistently scoring over 80% on them.

Sunday, November 10, 2019

Top 5 courses to learn Apache Maven for Java Developers - Best of Lot

The Apache Maven or commonly known as just "Maven," is an essential tool for Java Programmers. It allows you to build your project, manage dependencies, generate documentation and lot more. I can vouch for Maven's usefulness because I have come from the pre-Maven world of Software development, where you need to manage all the JAR files required by your project. It may seem easy to you that just download the JAR file but it's not so easy in practice.  For example, you added a new library in your project say Spring framework which also needs log4j but you thought log4j is already there so you didn't do anything, only to realize that your application is not starting anymore and throwing long and convoluted errors. This can happen because of version mismatch like Spring needed a higher version of log4j than available in your project.

How Spring MVC Framework works? How HTTP Request is processed?

One of the frequently asked Spring MVC Interview questions is about explaining the flow of web request i.e. how an HTTP request is processed from start to end. In other words, explaining the flow of request in Spring MVC. Since many of my readers ask this question time and again, I thought to summarize the flow of request processing in a short article. It all starts with the client, which sends a request to a specific URL. When that request hit the web container e.g. Tomcat it look into web.xml and find the Servlet or Filter which is mapped to that particular URL. It the delegate that Servlet or Filter to process the request. Since Spring MVC is built on top of Servlet, this is also the initial flow of request in any Spring MVC based Java web application.

Saturday, November 9, 2019

find + du + sort + head command example in Linux - Ho to search large files and directories in host to free some disk space

Hello guys, 100% full disk space is a common problem and as a programmer or Linux user, you often need to free disk space by deleting biggest files and directories. In order to do that, you need to know some Linux find command examples to list and delete some biggest files and directories and that's what you will learn in this tutorial. As a Java developer, you also need to also support your application, most of which mostly run on Linux machines. Though production is monitored by the dedicated support teams and they receive regular alerts on the status of file system space, they often come running to you or the developer responsible about what to do when disk space is almost full or reaching 100%.

Top 5 Best Java 8 Tutorials, Courses, and Books

It's been quite some time since the Java 8 was released but Java community is still buzzing with functional programming and lambda expression. Many developers, programmers, and bloggers have already shared lots of really good tutorial to learn lambda expressions, probably the biggest thing in Java world after Generic was introduced in Java 5. While the term "lambda expression" may sound abstract and academic, Java 8 Lambdas can have a big impact on how you program every day. Java 8 has not only introduced Lambda expressions but also Stream API, Functional interfaces, new Date and Time API and default methods, which has completely changed the way you write your Java code. As a professional Java developer, you will have to learn Java 8 one day, and it's better to do sooner than later.

Friday, November 8, 2019

10 Tips Improve Your Speed in Bash, and Linux Command Line

Have you ever amazed to see someone working very fast in UNIX, firing commands, and doing things quickly? Yes, I have noticed that a couple of times, and I have always inspired to learn from those superstar developers. In this article or tutorial or whatever you call it, I have dedicated to sharing some UNIX command practices I follow to work fast, quick, or efficiently in Linux. I work for the Financial services industry, and my work involves the development and support of online stock and futures trading applications in Electronic trading, Derivatives, etc. All our services run on Linux servers, so I need to work efficiently and quickly in the Linux machine, and that's how I have learned these productivity tips in Linux.

Thursday, November 7, 2019

Top 5 Java 8 and 9 Courses for Programmers - Best of Lot

Hello guys, if you are looking for some free resources, e.g., books, tutorials, and courses to learn and master new features introduced in Java 8 and Java 9, then you have come to the right place. In the past, I have shared some of the best Java 8 tutorials and books, and in this article, I am going to share some of the best, free Java 8 and Java 9 courses from Udemy and Pluarlsight with you. These courses are pretty similar to many paid courses you usually buy, and many of these are made free by just promotional or educational purposes by their instructor. You can join these courses to learn JDK 8 and JDK 9 features in a couple of days.

Do you Need to Pass OCAJP before taking OCPJP - Core Java Certification from Oracle

Even though we now have Java 11 certification, I know many Java developers who are going for Java certification like Java SE 8 Programmer 1 and 2, also known as OCAJP 8 and OCPJP 8 with exam code 1Z0-808 and 1Z0-809. Even though Oracle split Java certification into 2 after acquiring Sun Microsystem in 2010, there is still confusion among Java developers whether they need to pass just one OCAJP exam or both OCAJP and OCPJP exam to become a certified Java developer. Well, The short answer is Yes, if you want to become a Java certified engineer then you need to pass both OCAJP and OCPJP, but the long answer depends upon your situation, e.g. whether you hold any previous Java certification or not, which we'll discuss in the second section.

Kotlin vs Java - Which language Android Programmers and Beginner Should Learn First?

Ever since Google announced Kotlin as the official language for Android development in Google IO 2017, programmers who want to become an Android Developer are in a dilemma. Now the big questions in front of them are whether they should learn Kotlin or Java? The answer to these questions depends upon your profile. If you are a complete beginner who wants to learn Android development, then my answer is Java, but if you are a Java developer who wants to jump into the lucrative market of Android App development, then my answer is Kotlin. I'll discuss why a beginner Android programmer should start with Java and why Java developer should learn Kotlin in this article.

Wednesday, November 6, 2019

Top 5 Books for Programming/Coding Interviews - Best of lot

If you are preparing for Programming Job interviews and looking for some of the best books for programming questions, then you have come to the right place. In this article, I am going to share a couple of good books to prepare coding, software design, and data structure algorithm questions, which are essential for any coding interviews. Though a programming interview also explores other areas of software development, e.g., the programming language, you would be mainly used in your project, like, C++ or Java. The database and SQL based questions, the operating systems, and UNIX related questions, some of the software design and object-oriented design pattern questions, and much more, but coding based questions form the core of programming interviews.

6 ways to declare and initialize Two-dimensional (2D) String and Integer Array in Java - Example Tutorial

Declaring a two-dimensional array is very interesting in Java as Java programming language provides many ways to declare a 2D array and each one of them has some special things to learn about. For example, It's possible to create a two-dimensional array in Java without specifying the second dimension, sounds crazy right? but it's possible because two-dimensional array in Java is nothing but an array of array. You can even create a two-dimensional array where each subarray has a different length or different type, also known as a heterogeneous array in Java. This means it's possible to create a two-dimensional array with variable column length in Java.

Monday, November 4, 2019

How do you find length of a Singly Linked list using Loop and Recursion

Hello guys, here is one of the classical programming questions how do you find the length of a linked list using recursion and without recursion. This is not about the LinkedList class of Java API but the linked list data structure, which is made of nodes that contain both data and address of the next node. In order to calculate the length, you need to count all nodes in the linked list. Since it's a singly linked list you can only move in one direction from the head to tail.  This coding problem was asked to me on my first interview with a multinational Investment bankAfter that, this question has been asked to me on several occasions in other Programming Job Interviews as well.

Top 5 Websites to Learn Python Coding for FREE - Best of Lot

Believe it or not, but Python has inspired many people to learn to code and its continually inspiring them. I know a handful of people who are learning Python for different reasons, starting from web development to machine learning. I have seen new people learning Python to write web apps using Django, create a Machine learning Model using Python, and just to write some handy scripts to automate the boring stuff. Python is currently the world's #1 programming language and its popularity is growing every passing day, thanks to Data Science and Machine learning and awesome Python libraries like Pandas, NumPy, and TensorFlow.

Sunday, November 3, 2019

Difference between @RestController and @Controller Annotation in Spring MVC and REST

The @RestController annotation in Spring MVC is nothing but a combination of @Controller and @ResponseBody annotation. It was added into Spring 4.0 to make the development of RESTful Web Services in Spring framework easier. If you are familiar with the REST web services you know that the fundamental difference between a web application and a REST API is that the response from a web application is generally view (HTML + CSS + JavaScript)  because they are intended for human viewers while REST API just return data in form of JSON or XML because most of the REST clients are programs. This difference is also obvious in the @Controller and @RestController annotation.

Saturday, November 2, 2019

Java vs Python - Which Programming Language Should Programmer Learn First?

Java and Python are two of the most popular and influential programming language of the present time. Beginner programmer often get confused, one of the most frequently asked questions is should I learn Java or Python? Is Python is an excellent programming language to start with? Which programming language would you recommend for beginners to learn first etc.? Since I am a Java developer, my opinion is biased, I will always suggest you start with Java and then learn Python, but if you ask this question to a Python developer, you might get just opposite answer. I have well documented my reasons as to Why Java is the best Programming language and Why a programmer should learn Java. One of the most important reasons you would see in that blog post is an active Java community, which will help you throughout your Java career.

5 Websites to Learn SQL Online for FREE

The SQL is one of the most important skills for any programmer be it a Java, C++, Python, JavaScript, or Ruby developer. Almost 95% of the Java applications use a relational database in their back-end and almost all web applications use the database. In recent years, one of the most common way to learn any programming skill is online, at your comfort of the office or home and SQL is no different. Learning SQL online has another advantage of a quick head start because you don't need to install a database and create tables to write some SELECT queries. The installation and setup is definitely a tough part for beginners and I have gone through that pain every time I have to learn a new database.

Friday, November 1, 2019

10 Books Every Java Programmer Should Read - Best of Lot, Must Read

If you are a Java programmer and wondering what to read to improve your knowledge of Java and become a better Java developer, then you have come to the right place. In this article, I am going to share some of the best Java books ever written. In fact, this is my list of all-time great Java books. They have withstood the test of time and emerges as more and more successful years after years. It doesn't matter if you read them this year or reading them next year, you are always going to learn a lot, and that's why I call them all-time great books.

Top 5 Courses to learn JUnit, Unit Testing and Test Driven Development for Java Programmers - Best of Lot

Hello guys, today, we'll talk about JUnit and Unit testing, one of the critical skills for any Software developer. You may already know that JUnit and Mockito are two of the most popular testing libraries for Java applications, and you will find them in almost every Java application classpath. I often meet and work with Java developers who know Java well but haven't written a single unit test. When I ask them why don't you write unit tests, they come up with many excuses like they don't have time for writing unit tests, there is always deadline pressure, and some of the honest guys will tell you that they tried writing but give-up after 10-15 minutes due to difficulty in testing their code.

Thursday, October 31, 2019

When to use intern() method of String in Java?

The String.intern() method can be used to deal with the String duplication problem in Java. By carefully using the intern() means you can save a lot of heap memory consumed by duplicate String objects. A String object is said to be duplicate if it contains the same content as another string but occupied different memory location e.g. str1 != str2 but str1.equals(str2) is true. Since String object consumes a large amount of heap memory in average Java application, it makes sense to use the intern() method to reduce duplication and take advantage of String pool feature provided by Java. You can use intern() method to intern a String object and store them into String pool for further reuse.

Wednesday, October 30, 2019

How to use EXISTS Clause in SQL? A Real World SQL Query Example using EXISTS

Hello Guys, you might have heard about how useful the EXISTS clause is helpful in writing sophisticated queries. Still, at the same time, I have also seen that many programmers struggle to understand and use EXISTS and NOT EXISTS clause while writing SQL queries.  If you are one of them, then you have come to the right place. Today you will learn how to use the EXISTS clause in SQL by picking up a real-world example and an excellent SQL exercise from the LeetCode. Suppose that a website contains two tables, the Customers table, and the Orders table. Can you write an SQL query to find all customers who have never ordered anything?

Top 5 Data Structures and Algorithms Courses and Classes for Beginners [Python + Java + JavaScript]

Data Structures and Algorithms are one of the most essential topics for programmers. The best thing about them is that they never get out-of-date, and any investment you made in terms of time and money will pay rich dividends for a long time. I have also found that people good at algorithms and data structures are often a better programmer than others. They tend to improve your programming skill and coding sense, and that's the main reason I suggest all kinds of programmers, from junior to senior to spend some time revising, refreshing, and honing your data structure and algorithm skills. Most of us first heard about them in school and colleges but didn't understand at that time. At least I can say that to me. I first heard about the array and linked list of my engineering college.

Tuesday, October 29, 2019

Top 5 Books to Learn Data Science and Machine Learning with Python - Best of Lot

While there are many online courses to learn Python for Machine learning and Data science, books are still the best way to for in-depth learning and significantly improving your knowledge. Python is a universal language that is used by both data engineers and data scientists and probably the most popular programming language, as well. All the Data Scientists I have spoken, and many in my friend circle just love Python, mainly because it can automate all the tedious operational work that data engineers need to do. To make the deal even sweeter, Python also has algorithms, analytics, and data visualization libraries like Metaplotlib, which is an essential data scientist.

The 2019 Frontend and Backend Developer RoadMap

Hello Guys, Happy New Year, 2019. I am sure you all have already made your goals by now and thinking about how to achieve those goals. If one of your goals is to learn to code or to become a Web Developer in 2019, then I have something significant to share with you, the 2019 Web Developer RoadMap. This is an excellent illustration of how to become a web developer in 2019 and guide you on how you can learn and master Web Development in 2019. It's a collection of different paths to learning front-end, back-end, and all other things a Web developer should know.  You will not just know about web development but about essential programming stuff which is necessary for all kinds of programmers.

Monday, October 28, 2019

Top 5 Courses to learn JVM Internals, Memory Management and Performance Tuning in Java

For a senior Java developer, it's essential to know how JVM works and how to troubleshoot issues with respect to memory, most notably memory leaks in Java applications and servers like Tomcat. You might be thinking, how come memory leaks in Java? Isn't memory is managed by JVM and Garbage collector? Well, that's true, but poor coding or just a bit of carelessness can cause memory leaks in Java. If you don't know about how to configure JVM, troubleshoot memory-related problems on the heap, and stack, you will struggle at a higher level. That's why it's essential for experienced Java developers to spend some time learning these advanced skills as their experience grows.

Sunday, October 27, 2019

Top 5 HTML 5 and CSS 3 Courses for Beginners for Project based, hands-on Learning - Best of Lot

Hello guys, if you are learning Web Development or thinking about becoming a Web Developer, then you have come to the right place. Earlier, I have shared the 2019 Web Developer RoadMap, and today, I'll talk about HTML and CSS and share some useful resources to learn them in depth. There are three pillars of Web Development, HTML, CSS, and JavaScript. HTML provides structure, CSS provides the style and JavaScript provides the interactiveness. The HTML stands for HyperText Markup Langauge, and it's one of the oldest technology I know. I first come to know about HTML in my college day, good 20 years back, when we are happy to see a list of heading in different colors. HTML has come a long way since then with HTML 5 bringing some of the cool features. The same goes for CSS, the stylish part of your web. It is as old as HTML but improved a lot.

What is the best Book to Learn Java for C and C++ Programmer?

In the last 2 decades, many Java programmers started programming with C and C++, but the situation is changed now, you have more choices like you can choose Python, or you can even start with Java. It seems Academia prefers Python in the USA and Java in India, but there are still many programmers who know C and C++ and want to learn Java for one or other reasons. I often receive emails from my readers about book recommendation, and recently, a couple of them asked me to suggest the best Java books for C and C++ programmers. I can relate those beginners to myself because I have also gone through the same phase, but those days, the university textbooks are our only source to learn new things. We didn't have broadband, and unlimited access to the Internet and eBooks was not popular at that time, but things have changed.

Saturday, October 26, 2019

Top 10 DevOps Courses for Experienced Programmers to Learn Online - Best of Lot

DevOps is really hot at this moment and there are many job opportunities lying for distinguished engineers and DevOps professionals. If you are an experienced Java programmer and want to become a DevOps engineer then you have come to the right place. In this article, I am going to share some of the best online training courses you can take to become a DevOps professional. The most important advantage of DevOps is that it helps you to deliver better software and provide more control over your environment and software development process with the help of modern tools and automation. That's the reason the demand for DevOps professionals is growing exponentially. It's also one of the high paying jobs along with Data Science and Machine learning specialists.

Thursday, October 24, 2019

Top 5 Spring Cloud Courses for Java Developers to Learn Online - Best Of Lot

Hello guys, if you are learning Spring Cloud for developing cloud-based Java application and looking for some good resources to start with e.g. online courses and books then you have come to the right place. In this article, I am going to share some of the best courses to learn Spring Cloud and develop a cloud-based application in Java. One of the common question when it comes to learning a new technology is how to start? I was a big fan of books earlier but nowadays I personally like to start with an online course to learn things.  It works better because you gain a lot from the instructor's experience and you also have a chance to ask questions to the instructor.

Monday, October 21, 2019

Top 5 RESTful Web Services with Spring and Java Courses for Experienced Developers

In the last article, I have shared some courses to learn Microservice development with Spring framework and today, I'll talk about RESTful web service developments. The REST API and RESTful Web Services needs no introduction, it's everywhere now and driving a new internet revolution. Most of the software development in the web space now also involves REST APIs. Gone are the days where the only interface for a web application was the browser, now most of them support REST APIs, which allows them to be accessible on any device e.g. mobile devices, tablets, apple watch and any other digital gadgets. It doesn't matter whether you are working for software giants like Amazon, Facebook or Google or working with startups like Uber or Netflix, REST APIs are everywhere.

Top 5 Websites to Learn Java Online for FREE - Best of lot

Begin the author of a Java blog, I often receive questions like how to improve my coding skills?,  or how do I learn to code in Java?, or I am having difficulty solving programming problems, please help, etc. This is mostly from programmers who have just started programming or a graduate with a programming degree or even some programmers with a year or two in Job. Like many other things in the world, to improve coding, you need to code, code, and code - and to develop programming, you need to write a program, and that's where many of these programmers fail. In 90% cases, they simply don't write enough programs to develop programming logic and code sense and, if without too much experience at data structures and algorithms, if they attempt problems given on sites like LeetCode, HackerEarth, TopCoder or Project Euler, they fail miserably.

Sunday, October 20, 2019

How to implement Command Design Pattern in Java with Example

Hello guys, it's been a long since I have shared a Java design pattern tutorial. I did share some courses to learn design patterns but haven't really talked about a particular design pattern in depth. So, today, we'll learn one of the important design pattern, which is often overlooked by Java developers. Yes, I am talking about the Command Pattern which can help you write flexible, loosely coupled code for implementing actions and events in your application. In simple words, the command design pattern is used to separate a request for an action from the object which actually performs the action. This decoupling between Invoker and Receiver object provides a uniform way to perform different types of actions. This decoupling is achieved using a Command object, which is usually an interface with methods like execute()

10 Java and Web Development Courses from Udemy - Best of Lot

Hello guys, I am sure you all have made your goals and resolutions for this year, e.g., what to learn in 2019. If you haven't, then check out my post 10 Things Java programmer should learn in 2019 for some ideas. If you have already made your goal, then it is time to think about how you are going to achieve it. For example, my top 3 goals in 2019 are to learn Java 11, Spring 5, and Spring Security 5, but how am I going to learn them? Well, I like books and online courses, and that's why I have been searching for some excellent courses on Java 11 and Spring 5. Luckily there are some available in Udemy, and the best part is that they are currently running a New Year Sale event where every single course is priced just $10, Yes you heard it right, only $10.99, even for a course whose original price is $200.

Saturday, October 19, 2019

Top 5 Free Kubernetes courses for DevOps Engineers and Java Programmers

Hello guys, DevOps is becoming an essential skill in today's Programming and Software Development world and Kubernetes is an important concept and tool for DevOps Engineer. It takes container-based deployment to another level and allows you to manage it on the scale. You can use Kubernetes to scale your container environment or let Kubernetes do all the work for you by leveraging its auto-scaling feature. Many DevOps beginners think that Docker and Kubernetes are the same but they are not. Docker provides a container to deploy your application and commands to interact with those but container but Kubernetes is actually a container management technology, which decides how many containers are needed and deal with other management aspects.

How to Remove a Key, Value, or Entry from an HashMap in Java 8 - Example Tutorial

In the last article, I have shown how to remove key/value pairs from a map in Java based upon some conditions like remove all entries where values are greater than some values. I have told you that you must use the Iterator's remove() method for removing mapping while iteration to avoid ConcurrentModificationException, but that's not required anymore in Java 8. From JDK 8 onwards, you can selectively remove mapping without iterating over Map. The JDK 8 API has added several new methods to existing interfaces e.g. java.util.Collection, java.util.Map, Comparator etc because the interface can now contain concrete methods in form of static and default methods.

Friday, October 18, 2019

Top 5 Data Science and Machine Learning Courses to Learn Online - Best of Lot

Many programmers and Computer Science graduates are moving towards Data Science and Machine learning hoping for better pay and career opportunity and there is a reason for it. Data Scientist and Machine Learning Specialist have been ranked the number one job on Glassdoor for last a couple of years and the average salary of a data scientist is over $120,000 in the United States according to Indeed. Data Science is not only a rewarding career in terms of money but also it provides the opportunity to solve some of the world's most interesting problems.  IMHO, that's the main motivation many good programmers are moving towards Data Science, Machine Learning, and Artificial Intelligence.

Difference between StringJoiner vs String.join in Java 8 with Examples

Joining multiple String literals or object into one is a common programming requirement and you will often find situations where you need to convert a list of String or a Collection of String into a CSV String for your application. For a long time, JDK API has no way to join multiple String literals or objects together, which forces programmers to write hacks like looping through all String objects and manually joining them using String concatenation to create the final, joined String. Even though this approach worked, it was filled with errors and hacks like you need to be careful not to add delimiter before the first element and after the last element, which often caused issues, particularly in case of beginners and junior Java developers.

Thursday, October 17, 2019

Top 5 Courses to Learn Linux Shell scripting (bash, ksh, csh)Online - Best of Lot

A massive chunk of a developer's time is wasted in trying to repeat tasks and commands, especially when it comes to working with a bunch of UNIX or Linux machines, and a good knowledge of shell scripting can free you from such mundane task and give time to do some interesting stuff. If you don't know what shell scripting is then let me tell you is nothing but a program written using shell built-ins, and Linux commands to automate things, e.g. checking if a host is reachable or finding and deleting large files which are older than certain days or archiving them into another machine. Basically, it's a tool that allows you to automate the boring and repeating task, and that's the way programmers should work. They should not be repeating stuff; instead, they should be investing that time to create a script or program which can automate that task.

Top 2 Books for OCPJP8 Certification - Java 8 1Z0-809, 810, 813 Exam

This is the second part of the best books for Java 8 certifications. Since you need to pass two exams, OCAJP8 and OCPJP8, to become a Java SE 8 certified developer, I have shared some of the best OCAJP8 books in the last article. In this article, I will tell you more about the second exam, OCPJP8, and suggest the best books to prepare OCPJP8. This exam is known as a professional level exam, and it's more stringent than the associate level exam. The OCPJP8 stands for Oracle Certified Professional Java Programmer. The exam code for this certification is 1Z0-809.

Wednesday, October 16, 2019

What is a Functional interface in Java 8? @Functional Annotation Examples Tutorial

The Functional interface is one of the most important concepts of Java 8 which actually powers lambda expression but many developers don't put enough effort to understand it and spend time learning lambda expression and Stream API without first understanding the role of functional interface in Java 8. Unless you know what is a functional interface and how lambda is related to it, you can't use powerful features of Java 8 like Lambda expression and Stream API. Without knowledge of functional interface, you won't be able to understand where you can use a lambda in the code but also you will struggle to write lambda expression the method is expecting, hence, it's important to have a good understanding of functional interface in Java 8.

Tuesday, October 15, 2019

Top 5 Frontend Web Development Courses for Beginners - Best of the Lot

Frontend development is one of the critical skill for web developers as there is a lot of demand for programmers with excellent front-end development skills. If you've never experienced client-side web development, learning the plethora of front-end technologies can be difficult, but with proper guidance and choosing the right courses, you can achieve your target. The one thing which I want to tell you that a good knowledge of HTML, CSS, and JavaScript is a must for any front-end developer. Even though we are living in the era of frameworks and libraries, but knowledge of these fundamental technologies cannot be undermined.

How to Convert a Lambda Expression to Method Reference in Java 8?

If you have been coding in Java 8 then you may know that using method reference in place of lambda expression makes your code more readable, hence it is advised to replace lambda expression with method reference wherever possible. But, the big question is, how do you find whether you can replace a lambda with method reference? Yes, it's not that easy, especially if you have been using Java 8 only for a couple of months and struggling to get the functional programming concepts and idioms sorted in your head. Sometimes, IDEs like IntelliJ IDEA and Eclipse does offer some hints to convert lambda expression to method reference but it does make sense to learn the logic behind it, otherwise, it won't make sense.

Monday, October 14, 2019

Top 5 Spring Microservices Courses with Spring Boot and Spring Cloud

Microservices is the new buzz word in software development word and everybody is talking about it, but it's been in practice for quite some time especially in form of RESTful web services. The idea of Microservices is simple, breaking a big monolithic application which contains everything from UI to service layer to database into small chunks of applications which are loosely coupled and can work on their own. For example, in a company like Uber, you could have several applications providing different services e.g. discovering when a driver is online or a passenger is searching for a cab, finding a route, traffic and handling payments. These small applications are known as Microservices.

Top 5 Books and Courses to Crack Oracle's Java SE 11 Certification | OCAJP 11 1Z0-815 and OCPJP 11 1Z0-816, 1Z0-817

Hello guys, if you are preparing for the OCAJP 11 (1Z0-815)  or OCPJP 11 (1z0-816) exam and looking for some advice on preparation then you have come to the right place. The Java SE 11 Certification is one of the toughest of Java certification at the developer level. It's much harder than OCAJP 8, it's predecessor, and some of the programmers who have attempted it calling it even harder than the professional-level certification like OCPJP 8. In order to crack Java SE 11 certification, you need to prepare hard, but, at the same time, you also need to know which areas you should focus on. What topics should you spend more time on and which books and courses can help you to learn those essential topics?

Sunday, October 13, 2019

Top 5 books to learn Spring Boot and Spring Cloud for Java Developers - Best of Lot

Hello guys, if you are a Java developer and want to learn Spring Boot and Spring Cloud frameworks and looking for some of the best books and courses, then you have come to the right place. In the past, I have shared some of the best Spring Boot and Spring Cloud courses, and today I am going to talk about some of the best books to learn Spring Boot and Spring Cloud, but before that let's try to understand what is Microservice and how Spring Boot and Spring Cloud helps with development of microservices in Java. In simple words, Microservices is nothing but an extension of RESTful web services with the fundamental idea to break up your code into small, distributed, and independent services for better scalability and management, but it does require thoughtful design and think through ability.