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Top 5 Free HTML and CSS Courses to Learn Frontend Web Development in 2019 - Best of Lot

HTML and CSS are two pillars of web development, they are used to create web pages you see every day. HTML provides the structure to your web page and CSS provides them the style to look better. If you want to become a front-end web developer or web designer then a good knowledge of HTML and CSS is a must. Even though modern day web development is all about framework and library e.g. Angular and React, you still need to know HTML and CSS to understand what's going on and troubleshoot any issue you face while developing a web application. Btw, JavaScript is another pillar of web development but we'll not discuss this article. I have already shared some good books and courses to learn JavaScript before

15 People Java Developers Should Follow on Twitter

If you are passionate about Java and would like to follow Java bloggers into Twitter then here is my list of 15 people you can follow on Twitter to keep yourself up-to-date and engage in Java world. These people regularly share the latest things in Java, JVM, Spring, Hibernate, and other Java technology. By following them, you will not only know about their latest work but also what's happening in Java world. You might be thinking just 15 people, well, there are many more which is not in this list but I regularly share their twitter handles via my twitter account @javinpaul and @Javarevisited. If you are following me then you will automatically get to know about them.

Top 10 JavaScript (Frontend + Backend) Frameworks and Libraries Web Developer Should Learn in 2019

There is no doubt that JavaScript is now the #1 programming language in the world and also the king of web development. If you want to become a web developer who can quickly create websites like you see on the internet then a good knowledge of JavaScript and various, popular JavaScript web development framework is very important for you. These framework has completely changed the way people develop web application a decade ago. After node.js, its even possible to create a complete web application from front-to-back using just one programming language, JavaScript. That's why it has become the favorite programming language of all Full-stack Web Developers.

10 Books to Prepare Technical Programming/Coding Job Interviews

If you are preparing for a technical interview on software development sector and looking for some great books to boost your preparation, then you have come to the right place. In the past, I have hared some of the best online courses to prepare coding interviews, and in this article, I am going to share some of the best programming/coding interview books to prepare well for any software development jobs. These books are enough to crack even the toughest of the job interviews at GoogleAmazon, or Microsoft. They provide excellent coverage of all essential topics for programming job interviews like data structure and algorithms, system design, algorithm design, computer science fundamentals, SQL, Linux, Java, Networking, etc.

How to solve Arithmetic overflow error converting IDENTITY to data type tinyint, smallint or int in Microsoft SQL Server database

Last year we had a production issue where one of our backup jobs was failing while inserting Orders aggregated from other systems into our SQL Server database. The reason was dreaded "Arithmetic overflow error converting IDENTITY to data type int" because the table was using IDENTITY feature of SQL Server to generate OrderId, and Identity has breached it a maximum value, which is around 2.1 billion, precisely 2,147,483,647. The error "Arithmetic overflow error converting IDENTITY to data type int" comes when IDENTITY value is inserted into a column of data type int, but the value is out-of-range. For example, if the current value of Identity becomes more than 2,147,483,647, then you cannot store that into an int column because it's more than the maximum value of int in SQL Server.

Top 5 Free Courses to Learn Web Development in 2019 - Best of Lot

Hello guys, I have been sharing a lot of free online courses and books on various technology and programming language e.g, Python, Java, C++, JavaScript, PHPReact, Angular, Spring in this blog from quite some time and today I have brought some great free courses to learn the basics of web development. Web Development is an important skill for programmers in this era of Startups. As a programmer or software developer, you should know how to create a website and how to create a mobile app of your own. Though it's not easy. Coding is like art and many people born with coding sense, I mean they love coding, they love to create stuff like websites, mobile apps, games etc and they love to automate things.

Top 10 Programming Languages Programmers can Learn in 2019 - (Java, Python, and JavaScript)

Hello guys, 2018 is coming to end and 2019 is approaching fast. This is the time, most of us start making our goals e.g. physical goals, educational goals, and financial goals. As a programmer, one of our goals is to learn new technologies and programming languages, but which languages should you learn? Since learning a programming language requires both time and patience, you should learn a language which is worth the effort i.e. it can reward you a better job and career growth. In this article, I am going to share with you the top 10 programming languages you can learn for 2019.

5 Free Oracle and Microsoft SQL Server Online Courses

If you are an application developer, e.g., someone developing a server-side application using Java or .NET or any other programming language which uses a database like Oracle and Microsoft SQL Server or a junior DBA then you must learn these database technologies to effectively work in your Job. Even though your organization might have DBAs or Database Administrators to help you with the database, more often than not, it's application developers who end up writing SQL scripts to create data, upload data, query data, and writing complex stored procedures and triggers to implement application functionalities. DBAs job mostly does database installation, access control, security, and other database admin stuff.

Why Java is the best programming language for beginners and people want to learn coding

I often receive questions like which is a first programming language to learn first, Is Java a good programming language to start with,  how good Java is as a first programming language, which is the best programming language for beginners, or shall I start with Java or Python. Well, the answer to all these questions is, Java is one of the most popular programming languages, and there are a lot of reasons to learn Java, starting with Job opportunity to leverage community support. In the context of beginning programming or choosing Java as the first language, my most significant reason is that it's simpler to learn. The last generation of programmers started learning to program using languages like BASIC and then grew up learning C and C++ with Java as their second or third programming language.

10 Resources to Prepare well for your Programming Job Interview Questions

If you are a fresher or final year graduate preparing for your placement interview, or a Java developer preparing for your next job and looking for some websites, blogs, and forums for programming interview questions then you have come to the right place. In this article, I am going to share some of the really good websites and resources which will help you to prepare and do well on programming interviews. Though there are a large number of good books with lots of programming questions like Cracking the Coding Interview and Programming interview exposed, they are not the most interactive or comprehensive resources. Since with times, interviews are also changing you need to keep yourself updated with latest programming job interviews and Java questions.

Top 5 Git and Github courses for Beginners and Junior Developers - Best of Lot

There is no doubt that Git and Github have become standard source control and code repository for software developers. There was a time when multiple version control rules the world like CVS, SVN, VSS, Mercury, and TFS but slowly and for better, everything has converged to Git. Now, almost 70 to 80% programmer uses Git for version control and Github repository, both public and private for storing their source codes.  When it comes to using a source control tool like SVN or CVS, most of the programmers use them using IDE and they are hardly familiar with the command line. This is particularly true for old source control software like SVN and CVS but Git & Github has changed that culture a bit.

50+ Microsoft SQL Server Phone Interview Questions and Answers

Are you preparing for an SQL Server Interview? or, a Java developer position where SQL Server skills are important? If yes, then here are a couple of frequently asked Microsoft SQL Server Interview questions you should practice before going for your interview. These questions are also good to brush-up your Database and SQL fundamentals which is always asked as part of interviews.These list contains not only godo SQL Server interview questions but also some basic SQL questiosn which you will see everywhere. The list is useful for both beginners and intermediate develoeprs and DBAs with 0 to 2 years of exeprience.

1. What is normalization? (answer)
Normalization is processed to reduce duplication from tables. They help to reduce storage space by removing duplicate but after a certain normal form, it also makes difficult to query data. A table should at least be in 3rd normal form for all practical purpose.

Top 10 Data Structure and Algorithms Courses and Certifications in Java

Hello guys, In the past, I have shared a lot of useful resources like books and tutorials to learn Data Structure and Algorithms in Java. I have also shared a lot of Data Structure and Algorithmic interview questions like this and their solutions in Java, but I have constantly got queries about excellent courses to learn Data Structure and Algorithms in Java. Even though the topics are completely independent with the programming language, Java developer definitely likes the online courses which teach Data Structure and Algorithms in Java and that's why my recent post about best algorithms courses, which includes algorithms courses from JavaScript and Python didn't impress my readers.

How Binary Search Algorithm Works - Java Example Without Recursion

The binary search algorithm is one of the fundamental Computer Science Algorithms and used to search an element in a sorted input set. It's much faster than the linear search which scans each and every element and improves performance from O(n) to O(logN) for searching an element in the array. In order to perform the binary search, you need a sorted array, so you can either ask the user to enter array in sorted order or you should sort the array before performing the binary search. It's also one of the popular algorithms on Programming Job interviews. Interviewer often asks candidates to implement binary search algorithm by hand in their favorite programming languages like Java, C++, Python. or JavaScript.

Top 10 Java 9 Tutorials and Courses - Best of Lot Must Read

It's been more than a year or so since JDK 9 was launched and the new year is probably the best time to learn Java 9 and get yourself familiar with new features and enhancements on existing APIs. The highlight of JDK 9 release was Project Jigsaw or Module system. The Java 9 Platform Module System allows Java to move forward by modularizing the JDK as well as adding modules as first-class citizens to Java, but that's not the only thing to look forward, there are many small changes which are very useful in day-to-day coding. For me the static factory methods introduced in List, Set, and Map to create an immutable list, set and the map is the most interesting one. Along with several changes on Stream API and Optional class. Those are the ones, I will most likely to use as soon as we start with JDK 9.

Top 100 Data Structure and Algorithm Interview Questions for Java Programmers

Data structure and algorithms are a core part of any Programming job interview. It doesn't matter whether you are a C++ developer, a Java developer or a Web developer working in JavaScript, Angular, React, or Query. As a computer science graduate, it's expected from a program to have strong knowledge of both basic data structures e.g. array, linked list, binary tree, hash table, stack, queue and advanced data structures like the binary heap, trie, self-balanced tree, circular buffer, etc. I have taken a lot of Java interviews for both junior and senior positions in the past, and I have been also involved in interviewing C++ developer. One difference which I have clearly noticed between a C++ and a Java developer is their understanding and command of Data structure and algorithms.

What's wrong with using SELECT * in a SQL Query?

I have read many articles on the internet where people suggest that using SELECT * in SQL query is a bad practice and you should always avoid that, but they never care to explain why? Some of them will say you should always use an explicit list of columns in your SQL query, which is a good suggestion and one of the SQL best practices I teach to junior programmers, but many of them don't explain the reason behind it.  Unless you explain some reasons why one should not use SELECT * in queries, it's difficult to convince many SQL developers,  many of whom have started learning SQL by doing SELECT * from EMP in Oracle database. In this article, I will try to bridge that gap by giving some practical reasons why using SELECT * in SQL query is not a good idea.

Top 5 Free Apache Spark Course for Java, Scala, and Python Programmers to learn Online

Hello guys, if you are thinking to learn Apache Spark to start your Big Data journey and looking for some awesome free resources e.g. books, tutorials, and courses then you have come to the right place. In this article, I am going to share some of the best, free online Apache Spark courses for Java, Scala, and Python developers. If you don't know what is Apache Spark? and Why it's so important in the Big Data world then let me give you a brief overview first. Apache Spark is another cluster computing framework like Hadoop which is used to analyze a huge data set, but it's much faster as compared to Hadoop which makes it ideal for today's high computing needs e.g. processing huge amount of data.

How to Prepare for Java Certifications like OCAJP, OCPJP, or OCEJWCD?

No doubt that Oracle's Java certification is one of the most valuable certifications for IT industry and helps you to get a better job, better pay, and a better rise in your current salary. It also improves your recognition and job prospects because many big clients demands certified Java programmers for their mission-critical applications. Because of enormous popularity and usefulness, many Java developers and computer science graduate aspire for Java certifications. I often receive queries like, what is the best way to prepare for Java certifications like OCAJP or OCPJP? Or I am already coding in Java, do I need to make explicitly for this exam to do well or my Java development experience is enough? I have 5 years of experience in Java, do I need to prepare for OCAJP 8 or OCPJP 8 exam? Etc.

Top 5 books to learn Java Virtual Machine, Garbage Collection, and Performance in-depth

In the last couple of years, I have seen a trend of many Java developers wants to learn more and more about JVM internals and how Java Virtual Machine and it's different component works. This trend was not so strong in the last decade, but with more and more focus on concurrency, performance, and scalability, Java developer is exploring JVM internals, Garbage collection, and Performance tuning in more detail. Unfortunately, there are not many good books to learn about JVM internals and its different components but fortunately, we have an excellent Java Virtual Machine specification to learn fundamentals. It is also the most up-to-date reference because Java and JVM are kept changing, especially after Java 10.

Top 5 Free JDBC Courses for Java Programmers - Best of Lot

If you are a Java programmer and looking for some free JDBC courses to start learning database access in Java, then you have come to the right place. In this article, I am going to share some of the free online JDBC (Java Database Connectivity) courses from popular sites like Udemy and Pluarlsight to give you a head-start in your long journey of writing real-world Java application which interacts with the database. Since Data is the utmost important part of any Java application, it's imperative to have a good knowledge of how to interact with the database from Java application and JDBC is the first step in that direction.

10 Essential JVM Options for a Java Production System

Hello guys, this is a brief guide of relevant JVM options which you will often see in production Java systems. As a Java developer, you should know what these JVM options means, their importance, and how they affect your application. You will find that most of the JVM options are related to heap memory, garbage collection and to log some details, e.g., heap dump, necessary for troubleshooting heap related issues like a memory leak or excessive memory consumption. It's Ok if you don't know these Java virtual machine options yet, but you should be familiar with them, and that's the objective of this article. Btw, how do you find the JVM options your application is using? Well, you can see the startup scripts through which your application is started.

5 Best Courses to Learn Spring Boot in Depth in 2019

Hello guys, if you remember, one of my goals was to learn Spring Boot in 2019, and I have started working towards it. As I have talked about my 3 point action plan to learn new technology, the first step is to attend some online courses and start building from that. If you are not sure what is Spring Boot and why should you learn Spring Boot then let me tell you that it should be the first Java framework you should learn in 2019. The Spring Boot makes it really easy to work with the Spring framework by removing all the starting hurdles with respect to setup and configuration. In one word, it makes it possible to write Spring-based Java application and run them like core Java application, e.g. from the main method.

10 Tools Java Developers Should Learn in 2019

We are just a week away to 2019 and many programmers have already started making a good process to their goals for 2019, which is very good, but if you are someone, who is still not sure what to learn in 2019 then you have come to the right place. In past, I have shared 10 things Java developers to learn in 2019 and last week I published top 5 Java Frameworks to learn, but there is one topic which kept coming from my readers.  The question which I have received this week a couple of times form my fellow Java developers and readers is which tools Java programmers should learn in 2019? or what are some good Java tools used in application development? and finally, what should I learn in 2019? I have been answering this question by writing blog posts e.g. 10 Testing Tools Java developers should learn in 2019 and in this article, I am going to share some of the best Java tools you can learn in 2019.

Top 5 Books to Learn Python for Beginners - Best of All

Python is one of the most popular programming languages, and there is a vast demand for Programmers who knows Python. Even though I am a Java Programmer, I am learning Python. In the real world, you often find that a big project in a bank or insurance domain leveraging several technologies together, like Java, C++, Python, UNIX, SQL, and several others. Being a Polyglot programmer also pays off well. You also create a better impression on Interviews. I know many interviewers who prefer to interview programmer who knows more than one language.

Top 5 Free Android App Development Courses for Beginners in 2019

Hello guys, Happy New Year 2019. I am sure you all have made your goals and started planning on how to achieve them. If you are passionate about creating mobile games and applications and want to learn how to develop Android apps or want to become an Android application developer then you have come to the right place. In this course, I am going to share some of the best and free Android development courses for Java programmers and others. You might know that earlier Java was the only language which is used to create Android applications but since last year, Google has announced Kotlin as the official language for Android app development which means you can use either Kotlin or Java to create Android apps.

3 ways to create random numbers in a range in Java

Many times you need to generate random numbers, particular integers in a range but unfortunately, JDK doesn't provide a simple method like nextIntegerBetween(int minInclusive, int maxExclusive), because of that many Java programmers, particularly beginners struggle to generate random numbers between a range, e.g., random integers between 1 to 6 if you are creating a game of dice, or random number between 1 to 52 if you are creating a game of playing cards, and you need to choose a random card, or most commonly random numbers between 1 to 10 and 1 to 100. Then, the question comes, how to solve this problem? How to generate random int values between a range? Well, you need to do a little bit of work.

Top 5 Free Courses to learn Machine Learning and Deep Learning in 2019

Hello guys, Happy New year 2019. We are already in the second week of January and I am sure you all have made your goals and may be looking for the ways and resources to achieve them. If one of your goals is to learn Machine learning and Deep learning in 2019 then you have come to the right place. In this course, I am going to share some of the best free courses to learn Machine learning and Deep learning online. Btw, If you are thinking to learn Data Science, Machine learning, or Deep learning than you are not alone, more and more people are starting with these advanced skills around the world.

How to Convert a List or Set of String to Comma Separated String (CSV) in Java 8

Before Java 8, it was not straightforward to convert a list of String to a comma-separated String. You have to loop through the collection or list and join them manually using String concatenation, which can take up more than 4 lines of code. Of course, you could encapsulate that into your own utility method and you should but JDK didn't provide anything useful for such a common operation. Btw, things have changed. From Java 8 onwards you can do this easily. JDK 8 has provided a utility class called StringJoiner as well as added a join() method into String class to convert a List, Set, Collection or even array of String objects to a comma separated String in Java.

Top 5 Free Courses to Learn Swift Programming for iOS Developers

Hello guys, how are you doing this lazy Saturday? You might be thinking, as a Java developer why I am suggesting you learn Swift, but the truth is that I am not suggesting you abandon Java and join Swift, I am suggesting you join Swift if you want to develop iOS applications. We all use Apple's product and we love them, I have used iPod, iPhone, iPad, Apple Watch, and even MacBook and every time I use their product I just say wow and Swift are no different from that. It's a programming language from Apple so you will find all the features which makes Apple product great. It's simply because Apple has kept education in mind while creating it. If you have an iPad, you might have also seen the Swift Playground app, which is also a great app to learn Swift and iOS.

Grouping By, Partition By, Joining, and Counting in Stream - 10 Examples of Collectors in Java 8

As the name suggests, Collectors class is used to collect elements of a Stream into Collection. It acts as a bridge between Stream and Collection, and you can use it to convert a Stream into different types of collections like List, Set, Map. Btw, it not just limited to that, it even provides functionalities to join String, group by, partition by and several other reduction operators to return a meaningful result. It's often used along with collect() method of Stream class which accepts a Collectors. In this article, we'll learn Collectors by following some hands-on examples.

Top 5 Free Ruby and Rails Courses to Learn Online - Best of Lot

Hello guys, welcome to this post, here you will find some of the best free courses to learn Ruby programming language and Ruby on Rails framework online. If you don't know what is Ruby and what is Rails framework then let me tell you that its one of the simplest programming language with little to no syntax. If you are new to programming or never coded before then also developing a Ruby application will be much easier than choosing any other programming language like Python or Java. When it comes to developing web development, the Ruby on Rails also makes your job easy by making several useful assumptions based upon convention, which means you can do more by writing less code.

How DispatcherServlet process a request in Spring MVC Application?

One of the common question in Spring MVC is, how does DispatcherServlet process a request in Spring MVC? or What is the role of DispatcherServlet in Spring MVC framework? This is an excellent question to any Java or Spring web developer, the answer to this question shows how much you know about Spring MVC framework and its working. Actually, DispatcherServlet plays a significant role in Spring MVC. It acts as a front controller, and all incoming request passes through it, of course, you can configure this in URL pattern of DispatcherServlet declaration in web.xml, but this is the case for many Spring based web application.

Top 5 Sorting Examples of Comparator and Comparable in Java 8

The JDK 8 release has completely changed the way you compare objects and sort them in Java. The new features of Java 8 language e.g. lambda expression and method reference has made it easier to implement both Comparator and Comparable interface, as you don't need Anonymous class for inline implementation. Now, you can create Comparators in just one line by using lambdas and method reference as we'll see in this article. Other features like providing default and static methods on interfaces have also made a huge difference when it comes to Comparator. They helped Java API designer to redesign and evolve existing interfaces, which wasn't possible earlier without breaking existing clients of those interfaces.

Top 5 Free Courses to Learn PHP and MySQL in 2019

If you want to build web applications in quick time then PHP and MySQL is a good choice. PHP and MySQL are incredibly powerful open source technologies that allow programmers and web developers to create functional websites and apps that go way beyond basic HTML. PHP is specially created to generate interactive and dynamic websites and also known as server-side scripting language while MySQL is one of the leading relational databases along with Oracle and Microsoft SQL server. While it may seem intimidating to create a website using PHP and MySQL, especially for someone who has no experience in coding, it's not that difficult. With the right guidance and resources e.g. books and courses you can put together a PHP MySQL website in a week or so.

10 Technologies Programmers Can Learn in 2020

Hello Guys, we are just a few months away from 2020 now, and many of you might have already made your goals about what to learn in 2020, but if you haven't then you have come to the right place. In this article, I am sharing some of the best framework and libraries for web development, mobile app development, and big data, an application developer can learn in 2020. The New Year will be all about the mobile. Machine learning, and next-generation web with a greater focus on big data technologies like Hadoop and Spark, but you can still learn the popular Java and Web development frameworks like React, Node.js, Spring Boot to take your career to the next level. These frameworks are tried and tested and will be here for at least the next 5 years to come.