Top 10 Java ClassLoader Interview Questions and Answers

Hello guys, if you are preparing for Java interviews and want to refresh your knowledge of Classloaders in Java then you have come to the right place. Earlier, I have shared Java interview questions on Collections, Multithreading, Serialization, and Generics, and in this article, I am going to share frequently asked Java interview questions about class loaders. If you don't know, a class loader is a program that loads classes in Java programs. The mechanism of class loading is very important to understand how the Java program works. When you run a Java program you give the name of the main class, from their onwards, built-in classloaders like Bootstrap classloader start loading not just the main classes but other Java library classes which is required to run that program. 

Why Java Developer Should Learn Maven or Gradle?

Hello guys, being a Java blogger, many Java developers ask me questions like "I am learning Java, should I also learn Maven or Gradle?" or "Is it mandatory to learn Maven to get a job as a Java developer", "Should I learn Maven or Gradle, which one is better for future?" and the less common one "Why should I learn Maven or Gradle as a Java developer?".  In the past, I have shared the best courses to learn Maven for Java developers and some useful Gradle books and courses,  as well as answered questions around Maven vs Gradle and I will try to answer these questions in this article and assert the importance of Maven and Gradle as a build tool for Java Developer.  Along the way, I will also share useful resources to learn both Maven and Gradle for Java developers. 

Top 5 Courses to Learn Visual Studio Code [VS Code Editor] in 2021 - Best of Lot

Hello guys, if you want to learn VS code and looking for the best online courses and tutorials then you have come to the right place. In the past, I have shared the best Eclipse IDE courses and best courses to learn IntelliJIDEA and in this course, I am going to share the best online course to learn VS code, one of the most popular free code editors in 2021. If you are doing web development or programming then you might have heard about VS Code or Visual Studio Code, one of the best modern IDE from Microsoft for modern developers. Visual Studio Code is a fast and lightweight cross-platform code editor for writing modern web and cloud applications. You can use VS Code not only on Windows but also on Mac. 

10 Essential UTF-8 and UTF-16 Character Encoding Concepts Every Programmer Should Learn

Hello guys, if you want to learn about character encoding, particularly UTF-18 and UTF-16, and looking for a good resource then you have come to the right place. In this article, I am going to discuss 10 important points about UTF-8 and UTF-16 character encoding which I believe every programmer should learn. This is one of the fundamental topics to which many programmers don't pay attention unless they face issues related to character encoding. Knowing how a character is stored and how they are represented is very important in this age of globalization where you need to store and work through data that contains characters from multiple languages. 

Java 8 IntStream Examples - range, rangeClosed, sum and sorted

Hello guys, if you want to learn about IntStream in Java 8 and looking for a simple tutorial and example then you have come to the right place. Earlier, I have shared 10 examples of Lambda expression and filter+ map+ collect examples and in this article, I will show you how to use IntStream in Java 8. IntStream is a specialization of Stream class for primitive int values. It allows you to perform a sequential and parallel aggregate operation on a list of values like count() to print the total number of element in stream, min() to find minimum value in the stream, max() to find maximum value in the stream, sum() to find a total of all values and average() to find the average of all numbers in the stream.

Top 50 SQL and Database Phone Interview Questions Answers

Database and SQL is a very important skill, not just for DBA or Database admins but also for any application developer like Java.NET, or Web developers. This is why you would often see questions from SQL and Database in Programming interviews. For DBAs, SQL is more important than a programmer, because it being their primary skill, they are also expected to know more than a common Java or .NET developer. Since no Java interview is just about Java questions, many times I receive a request from my reader about SQL questions like how to solve a particular query or some tricky questions based upon database indexes.