Friday, November 30, 2018

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

Begin an 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 has just started programming or a graduate with 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 improve 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 program 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 TopCoder, or Project Euler, they fail miserably.

Top 5 Free Git Courses for Programmers to Learn Online - Best of Lot

One of my goals in 2018 is to learn and master Git and I have been searching some good tutorials and courses to start with. The Internet is full of git tutorials and a simple Google search will leave you thousands of tutorials but the big question mark is where do you start? It's easy to pick a tutorial or a blog post if you have some background about what is Git, what it does? and how to use it but if you don't have much background then you need a course which can tell you all the information from the ground up. I personally like learning from a book or an online course before moving to blog posts as they were often well structured. When you search for Git courses in popular online course websites e.g. Udemy, Pluralsight or Coursera, you will find some good courses e.g. Git Complete: The Definitive Guide on Udemy and Git Fundamentals from Pluralsight which will teach you everything about Git step by step. These are excellent resources to start with Git.

Thursday, November 29, 2018

Spring Framework Certification FAQ - Frequently asked Questions Answers for Java Developers

If you are a Java developer, working in Spring framework and thinking to become a certified Spring professional but couldn't to do it in the past due to expensive mandatory training provided by Pivotal and its partners then there is a good news for you. From 10th May 2017, Pivotal made the Spring Core training optional for appearing to Spring certification exam, which means, now, it's not mandatory to take Spring training for Spring certifications (see here). Similar to Oracle's Java certifications, you can become a Pivotal certified Spring Professional by just buying the exam vouchers and scheduling your exam online using examlocal.com from anywhere in the world.

Wednesday, November 28, 2018

Top 10 Programming and Coding Interview Courses for Programmers

To be honest with you, getting your first job is never easy. It is, in fact, the hardest task and you need to put your best effort to find a job 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 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.

Top 5 books to learn Agile and Scrum for Programmers - Best of lot, Must Read

When I started my career, it was all waterfall model. You try, fail, and then with every version you get an improved version of a software. I pretty much used to this model of software development until I was introduced to Agile development methodologies in my next company. I was confused about Agile as some people say its Scrum and Sprint, other ways its XP and Kanban etc. The confusion lasted for a long time because I was afraid of asking questions (afraid of being perceived as dumb and someone who wastes time on meetings) and only getting information in bits and pieces and I wasn't good at searching books at that time. From that experience, I learned that, when you have confusion and want to learn more about a new technology, nothing is better than a book or online training courses to start with.

Tuesday, November 27, 2018

Top 5 IntelliJ IDEA and Android Studio Courses for Java and Android Development - Best of Lot

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 me and many other Java developers to 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.

How to Check/Uncheck CheckBoxes in a Page using jQuery? Example Tutorial

In the last couple of articles, I have shared a couple of useful jQuery tips like reloading web page and working with tag selectors. Today, I'll show you how to check or uncheck a particular checkbox using jQuery, one of the most popular JavaScript framework. jQuery provides CSS like selectors which can make this kind of task trivial. If you remember, in HTML a checkbox is checked if the "checked" attribute is present and its value is not false, otherwise, it's unchecked. By using jQuery function prop() you can dynamically add this attribute or if present we can change its value i.e. checked=true to make the checkbox checked and checked=false to mark the checkbox unchecked.

Monday, November 26, 2018

How to delete a key value pair from a HashMap during Iteration in Java - Example tutorial

Suppose you have a Map or Dictionaries like HashMap or Hashtable, which contains key-value pairs like books and their prices, and you want to delete all books whose prices are greater than 40 USD, how do you that in Java? This is one of the most common scenarios while developing Java application and many Java programmer, will say that they will iterate over Map and check each entry and then use the remove(Object key) or remove(Object key, Object value) methods from java.util.Map to delete any mapping where the value is greater than 40 USD. Though the approach is right, the answer is wrong.

Top 8 Python Libraries for Data Science, Machine Learning, and Artificial Intelligence

Hello guys, today I am going to talk about something which is not related to Java but a very interesting technology development which is happening around and you simply can't afford to miss out this opportunity. Yes, you guessed it right, I am talking about Machine learning, Artificial Intelligence, and deep learning. There is a good chance that you might have already heard about them and even started learning them. You may be either form Python camp or learning R programming for the sake of machine learning. When I started my journey of Machine learning and Data Science, I had to first make a choice about choosing the right programming language as both R and Python were doing great.

Sunday, November 25, 2018

How Http Basic Authentication works in Spring Security?

In the last article, you have learned how to enable Http basic authentication in Spring security based Java application and now we'll go one step further to understand how exactly http basic authentication works in Spring security. If you remember, when you use HTTP Basic for authentication purpose the client e.g. browser or a rest client sends login credentials in http request header. The header is aptly named as "Authorization" and it contains based 64 encoded string which is created by concatenating username and password using a colon. For example, if the username is "johnsmith" and password is "JOHN3214" then they will be concatenated as "johnsmith:JOHN3214" before encoded using base 64 encoding algorithms.

Entuware or Whizlabs? Which Exam Simulator Should you Buy for Java 8 Certifications?

I often receive queries from Java certification aspirants about exam simulators e.g. whether should I go for Whizlabs or Enthuware, which one is better? If I have to buy just one exam simulator, which one would you recommend, Whizlabs or Enthuware? I thought to answer all those questions in a blog post and here you go. To be honest both of them are really high-quality test simulator and whichever you buy, you will do well on actual exams. But, as a programmer I really like to analyze the situation, I compare pros and cons of each of them before I buy one of them. Since I have used both of them in past I am sure about quality they are neck to neck there, but here are couple of things which you can consider before buying Java certification simulator from Whizlabs or Enthuware

Saturday, November 24, 2018

Top 30 Eclipse Keyboard Shortcuts for Java Programmers

This tutorial is about 30 Eclipse keyboard shortcuts, this list is by no means complete and I will suggest you guys share eclipse shortcuts listed other than here to make this more useful. Eclipse is the most used Java development IDE and knowing these Eclipse shortcuts not only improve your productivity but also makes you more efficient. You will have more time for things you like to do. Using keyboard shortcuts also helps to impress colleagues and shows that you have a good hold on tools you used for Java Development. If you are a Java developer, who use Eclipse as your main IDE for all-purpose e.g. coding, development, and debugging, then I also suggest you take a look at Beginners Eclipse Java IDE Training Course, one of the best course to learn how to use Eclipse effectively from Java programmer's perspective.

Does Spring Certification helps in Job and Career? 5 Reasons to Become a Certified Spring Developer

One of the frequently asked question among Java and Spring developer is whether Spring certification is valuable? or does Spring Certification help you in Job and Career? These questions are not very different from what Java developer ask about Oracle's Java certification (see here). The short answer to these question is Yes, Spring Certifications are very valuable and it not only provides Industry recognition for your knowledge, experience, and skill but also set you apart from the millions of Java and Spring developer who are not certified. Of course, as with any certification, the most valuable part, apart from recognition is the learning process and this is true for Spring certifications as well.

Friday, November 23, 2018

Top 5 Object Oriented Programming and Design Courses in Java - Best of Lot

There is no doubt that Object-oriented programming is a pillar of software development and also one of the reasons for a huge success of Java. A good knowledge of Object-oriented programming helps you to create better software. It also helps you to communicate your ideas better with your team and fellow programmers. Despite being such an important technology, it's difficult to find good programmers who understand OOP well. Many programmers just think that OOP is nothing more than Abstraction, Inheritance, Encapsulation, and Polymorphism, without truly understanding these concepts and mastering them.

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

Java and Python are two of most popular and powerful 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 good 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 for 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 strong Java community, which will help you though out your Java career.

Thursday, November 22, 2018

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

Many programmers are moving towards Data Science and Machine learning hoping for better pay and career opportunity and there is a reason for it. Data Scientist has 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 you 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 Stable and Unstable Sorting Algorithm?

Recently in one on the interview, after some initial questions about sorting algorithms e.g. how do you write QuickSort or difference between QuickSort and MergeSort, the interviewer asked about do you understand the difference between stable and unstable sorting algorithm? This question was new to my reader, so he says, Sorry, never heard about that. The story ended there, and Interviewer moved on to next question but like many of us, my reader went on to find more about unanswered questions and ultimately he asks me what is the meaning of a stable and unstable sorting algorithm? Some of you might be heard about it and many of you might not know about this distinction, I'll try to answer this question in this article.

Wednesday, November 21, 2018

How to avoid deadlock in Java Threads?

How to avoid deadlock in Java? is one of the popular Java interview question and flavor of the season for multi-threading, asked mostly at a senior level with lots of follow up questions. Even though question looks very basic but most of the Java developers get stuck once you start going deep.

Interview questions start with "What is a deadlock?"
The answer is simple when two or more threads are waiting for each other to release the resource they need (lock) and get stuck for infinite time, the situation is called deadlock. It will only happen in case of multitasking or multi-threading.

Top 5 Data Structures and Algorithm Online Courses for Java, JavaScript, and Python Programmers - Best of Lot

Data Structure and Algorithm is one of the most important 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. I have also found that people good on 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 for me. I first heard about array and linked list on my engineering college.

Tuesday, November 20, 2018

How to convert float to long or int data type in Java?

Yesterday one of the new joiner Java Trainee Engineer from our team came to me and asked about how do you I convert a float variable into long or int data type? He was storing some values coming from another system in the database and only wanted to store value before the decimal point e.g. he was getting "3.144" and he wants to convert it to "3" to store into database. The good thing was that API was returning a float primitive value and you don't need to convert a String to float etc. I asked him whether he needs routing or not, which he wasn't sure but it turns out that he didn't need that. I explained to him how to do that and that's what you will find in this article as well. In short, there are 3 ways to convert a float value into long or int in Java, but we will only focus on long data type part.

Top 15 Java Multithreading, Concurrency Interview Questions Answers asked in Investment banks

Multi-threading and concurrency questions are an essential part of any Java interview. If you are going for any Java interview on any Investment bank e.g. Barclays, Citibank, Morgan Stanley etc for Cash Equities Front Office Java Developer position, you can expect a lot of multi-threading interview questions on your way. Multi-threading and concurrency are favorite topics on Investment banking interviews,  especially on electronic trading development jobs and they grill candidate on many tricky java thread interview questions. They just want to ensure that the guy has solid knowledge of multi-threading and concurrent programming in Java because most of them are in the business of performance which provides them a competitive advantage and it's hard to write correct and robust concurrent code.

Monday, November 19, 2018

How to find a Process Listening on a Specific Port in Linux? netstat and lsof command examples

In Linux, many times, you want to find out the PID of a process which is listening on a port e.g. if multiple tomcat servers are running on a host and you have to kill that process, but in order to kill that process you need the process id, how do you find the PID of the tomcat listening on port 8080? There are many Linux commands to find the process using a specific port, but I'll share what I use. I always use the netstat command with -p option, which displays process id of the process listening on a port. Btw, netstat is not the only command to find all processes using a particular port, you can also use the lsof command for the same purpose.

Top 10 Popular Programming languages 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 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.

Sunday, November 18, 2018

The @SpringBootApplication Annotation Example in Java + Spring Boot

Hello guys, today, we'll learn about the @SpringBootApplication annotation, one of the most important annotations from popular Spring Boot framework, which has changed the way Java developers use Spring framework for writing Java applications. In this article, I'll explain you the meaning of @SpringBootApplication and it's used in a simple Spring Boot application. We use @SpringBootApplication annotation on our Application or Main class to enable a host of features e.g. Java-based Spring configuration, component scanning, and in particular for enabling Spring Boot's auto-configuration feature.

10 Differences between StringBuffer and StringBuilder in Java

Both StringBuffer and StringBuilder are two important classes in Java which represents mutable String i.e. the String object, whose value can be changed. Since String is Immutable in Java, any change or operation on String object e.g. converting it to upper or lower case, adding character, removing a character, or getting a substring, all results in a new String object. This can put a lot of pressure on Garbage collector if your application generates lots of throws away String instances. To avoid this issue, Java designer presented initially StringBuffer class and later StringBuilder as mutable String. That's the main difference between String vs StringBuffer and StringBuilder and also one of the frequently asked Java questions for beginners.

Saturday, November 17, 2018

Top 10 Angular Tutorials and Courses for Web Developers - Best of Lot

Hello guys, if you are interested in learning the Angular framework, one of the best and most popular JavaScript frameworks for developing component-based Web GUI and looking for some awesome courses then you have come to the right place. In this article, I am going to share some of the best resources e.g. books, tutorials, and courses to learn the Angular framework, formerly known as Angular JS and now famous as Angular 2. It's backed by Google, hence you should not worry about it being out-dated and lose relevance in a couple of years. Any investment you made in learning Angular will pay you rich dividends in coming years.

How to Schedule Spring Professional Certification 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 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.

Friday, November 16, 2018

Do you Need to Pass OCAJP before taking OCPJP - Java Certification for SE 8 (1Z0-808 and 1Z0-809)

Even though we are now waiting for Java 11, the latest Java certification you can do is 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 on 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 than 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.

10 Tools Used by Java Programming Developer in Day to day life

Every trade has their 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. In order to become a good developer, you must know right tools for right jobs. A developer without tools and tricks are like a toothless lion, hence it's very important that you 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 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.

Thursday, November 15, 2018

Top 10 ConcurrentHashMap Questions from Java Interviews

The ConcurrentHashMap class part of concurrent collections package added on JDK 1.5 which contains utility classes like BlockingQueue, CopyOnWriteArrayList, CopyOnWriteArraySet etc. It is a replacement of synchronized hash-based map implementations e.g. Hashtable and synchronized HashMap. It implements Map and ConcurrentMap (a sub-interface of Map) interface which allows you to store key-value pairs. The class is similar to HashMap or Hashtable but it's more scalable and the right fit for concurrent Java application. Unlike Hashtable which achieves its thread-safety by compromising the scalability, ConcurrentHashMap uses advanced techniques e.g. dividing the map into segments to remain thread-safe and scalable at the same time.

Wednesday, November 14, 2018

Top 5 Courses to Learn Shell Scripting in Linux and UNIX Online - Best of Lot

A huge 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 is shell scripting 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 which allows you to automate boring and repeating task and that's the way programmers should work. They should not be repeating stuff, instead should be investing that time to create a script or program which can automate that task.

Tuesday, November 13, 2018

Top 5 Soft Skill and Career Development books and Courses for Programmers

Most of the software developers, programmers, and coders spend a considerable amount of their time and energy on learning technologies which get obsolete in few years e.g. a new framework or a new programming language but they neglect something more important e.g. soft skills. Unlike technical stuff, soft skills will not only serve you good in your job and career but also in your life and it won't get obsolete as quickly as the new web application development framework you have just learned. Similarly, most of us put a lot of effort to get a job but after that, we don't put much effort to grow on that job, the result is many programmers and software developer stuck in their career.

Top 20 Spring MVC Interview Questions and Answers for 2 to 5 years Experienced Java Programmers

The Spring MVC framework is one of the most popular Java frameworks for developing web applications. If you have been working in Java and the developing web-based application then there is a good chance that you have already used Spring MVC in your project. In last decade, it has become the defacto framework for developing Java web application. Spring MVC is based on classic MVC (Model-View-Controller) design pattern but it is much more than that. It leverages, Spring framework's strength in terms of dependency injection and Inversion of control and promotes loosely coupled architecture, similar to the Spring framework itself. Because of its immense popularity and usefulness, most of the Java development job requires a good knowledge of Spring and Spring MVC.

Top 5 Java EE or JEE Courses to Learn Online - Best of Lot

The Java Platform Enterprise Edition 8 or Java EE 8 was released last year along with Java 9 in September 2017. If you are a Java developer or someone who wants to learn Java EE for web development and looking for some good courses to kickstart your learning then you have come to the right place. In this article, I am going to share five awesome Java EE courses which cover both Java EE 7 and Java EE 8 and very useful for learning Java EE in 2018. If you are wondering what is Java EE and what does Java EE 8 brings into the table, let me give you a brief overview of Java EE first.

Monday, November 12, 2018

Top 5 Java Multithreading and Concurrency Courses for Experienced Programmers - Best Of Lot

If you are a Java developer and looking for some awesome resources e.g. books and courses to improve your multi-threading and concurrency skills in Java then you have come to the right place. In the past, I have shared books and tutorials on Java Concurrency and Multithreading and in this article, I am going to talk about some of the best free and paid course to learn multi-threading and concurrency in Java. You can join these free courses to improve your understanding of Java Concurrency and Multithreading. It's one of the most important skills for Java developers as almost all the companies who interviews Java developers pay particular attention to his knowledge and experience in this area.

5 Must Read Books to become Software Architect or Solution Architect

I receive a lot of queries from senior Java developers, who aspire to become software architect or solution architect e.g. what can they do to become a software architect? Which books, resources, or certifications can help? and general queries like how much experience you need to become software architect etc. In the past, I have been suggesting them individually about some books to read to expand their knowledge base and look at the software from architecture and design perspective and this article is a compilation of many of such suggestions. Since a lot of books can confuse, I have only select 5 best and must-read books from software architect perspective.

Saturday, November 10, 2018

Top 5 TensorFlow and Machine Learning 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. If you have not read that story, I strongly suggest you read, in fact, that's one of the few stories which motivated me to learn more about machine learning.  You can find the link on further learning section of this article.

Top 5 Java 8 Courses to Learn Online - Best of Lot

It's been more than 4 years since Java 8 was launched on the March 2014 and many of you already thinking that Java 8 now legacy version but there are still so many Java developers out there who don't know how to code using new language features of Java 8 like lambdas, stream, and method reference. It's high time for all those programmers to learn and master Java 8 before their skill become outdated. After that, we already have a couple more Java releases i.e. Java 9, Java 10, and Java 11 in the space of just 6 months apart but Java 8 is still the most used version, particularly when it comes to coding style.

Friday, November 9, 2018

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.

3 Ways to Learn Spring Core, Spring MVC, Spring Security, and Spring Boot Framework

If you are a Java developer and wants to learn Spring framework then you have come to the right place. In this article, I will share three ways to learn Spring framework, but before that let's understand what is a spring framework and why Java developers should learn Spring framework? Well, Spring is a framework which assists you to develop Java application by following some best practices, particularly the principle of dependency injection and inversion of control. As per this principle, instead of class asking for its dependency, the framework provides them at runtime.  Following these principles improves your code quality because it reduces coupling between different part of your applications e.g. between modules and classes, which makes them easier to test and develop.

Thursday, November 8, 2018

3 Ways to convert String to Boolean in Java? Examples

You can convert a String object to Boolean object or boolean primitive by using the Boolean.valueOf() and Boolean.parseBoolean() method. The steps are similar rot converting to String to other data types e.g. String to Integer and String to Long. You can use valueOf() method to convert String to Boolean object and parseBoolean() method to convert given String to boolean primitive value. Internally, valueOf() also uses parseBoolean() for parsing String but on top of that it also provides caching e.g. it can return Boolean.TRUE and Boolean.FALSE cached value for "true" and "false" string.  In fact, the Boolean.TRUE is returned only when String is equal to true ignoring case e.g. "True", "true", "TRUE" will evaluate into boolean true, hence Boolean.TRUE will be returned. For string like "Yes", Boolean.FALSE will be returned. We'll discuss the rules of String to boolean conversion in next section.

Sunday, November 4, 2018

How to Remove Leading/Trailing White Space from a String in SQL Server? LTRIM, RTRIM Example

Unlike Java, Microsoft SQL Server 2008, 2012, 2014,  and even the latest version don't have a built-in trim() function, which can remove both leading and trailing space from the given String. But, SQL Server does have two built-in functions LTRIM() and RTRIM() to remove leading and trailing space. The LTRIM() function removes space from the left side of String so you can use it to get rid of leading space, while RTRIM() removes white-space from the right side of String so you can use it to delete trailing space. You can even combine these two methods to create your own TRIM() method in SQL SERVER e.g. LTRIM(RTRIM(column)) will act as a TRIM() method because it removes both leading and trailing space.

Top 5 React JS and Redux Courses to Learn Online - Best of Lot

If you are a JavaScript developer or someone passionate about web development and looking for some awesome courses to learn React or React JS, a popular JavaScript framework to develop component-based user interface then you have come to the right place. The Facebook's React library has taken the front-end development world by a storm. More and more people have started using React even in favor of Google's Angular, another popular front-end development framework. Well, I am not going into the classic debate of Angular vs React as both the framework has their own advantage and disadvantage but if you have chosen to learn React, you have made the right decision.

Saturday, November 3, 2018

The best Course to Learn Spring Security 5 for Experienced Java Developers

If you are a Java Spring developer and working with Spring Security then you may be familiar with the "Learn Spring Security" course by Eugen Paraschiv of Baeldung.com. It is one of the most advanced and comprehensive courses on Spring Security and the best part of this course is that Eugen always keeps it up-to-date with new Spring Security release. Now that version Spring Security 5 is out - he has updated his course to use new features of Spring Security 5. Btw, there is some really cool new functionality coming in Spring Security 5 for the reactive programming model, and many other improvements and new features. But, the most important one is the release of OAuth2.

Friday, November 2, 2018

Top 5 Node.js and Express JS online courses for Web Developers

There is no doubt that JavaScript is the #1 Programming language in the world and Node.js is one of the biggest reason for that. Initially, JavaScript was considered just a client-side scripting language but Node.js has changed all that by allowing developers to create dynamic web pages on the server side using JavaScript. It is also rated as the most popular framework of 2017 on StackOverflow Developers survey. The most important benefit of Node.js is that it allows you to build a full stack application based on just one language, JavaScript. This is especially useful for start-ups which put a lot of emphasis on being able to iterate early and often.

Thursday, November 1, 2018

Top 5 Free Agile Courses for Programmers and Software Engineers - Best of Lot

Technology is changing at a rapid pace and market conditions, tough competition, and time-to-market are some of the biggest concerns for today's organizations, especially for technology companies. In order to adapt this fast-changing environment, most of the companies are now using the Agile model of development, testing, and project management. This enables the organizations to efficiently cope with changes and deliver faster and that's why for a programmer or an IT professional, a solid knowledge of Agile methodologies and framework is important. It doesn't matter whether you know the Waterfall model of development or not but it does matter whether you have worked in an Agile environment or not. In order to educate programmers about Agile, I have shared some of the books to learn Agile in past and today I am going to share some of the free online Agile courses you can take to learn Agile methodologies at your own pace.