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Top 40 Java and Linux Interview Questions Answers for IT Support Engineers

Hello guys, if you are going for a Java support engineer interview and looking for some frequently asked questions then you have come to the right place. I have shared many posts about Java interview questions in the past but nothing, particularly from the support engineer perspective. Since there are a lot of L1 and L2 support job that exists in BFSI (Banking, Finance, and Insurance Industry) and they are also for the longer term, I decided to write this post. In this article, I will share questions to help with technical aspects like the essential skills you need to clear a support engineer interview.

How to Print SQL Statements in Spring Boot Application Log File? Example Tutorial

Hello guys if you are working on a Spring Boot application which loads and save data from database but you are not sure which queries are run on backend and you want to see them then you have come to the right place. Earlier, I have showed you how to set logging level in Spring Boot and In this article we are going to have a look at another very interesting topic from Spring Boot on how to log SQL statements in spring boot app. I know you might be wondering why I’m calling a very boring topic an interesting one? A proper logging is among one of the features that sets intermediate or experienced developers apart from beginners. 

Difference between Scala, Kotlin Java Programming

Hello guys, what is difference between Java, kotlin, and Scala is a common question from Java developers and new programmers who are learning these programming language for backend development. As a Java programmer and blogger, who has also worked extensively with Kotlin, I've often been asked about the differences between these two languages and how they compare to Java. While Java remains one of the most popular programming languages in use today, both Kotlin and Scala have gained significant traction in recent years, particularly in the realm of modern web development and microservices. 

Top 15 Spring Boot Interview Questions with Answers for Java/JEE Programmers

Hello guys, if you are preparing for your next Java interview and Job description mentioned about the Spring framework, then you should also prepare some Spring Boot interview questions to avoid disappointment. Spring Boot is now the standard way to use the Spring framework for Java development and almost all the companies are moving from the traditional way of using Spring Framework to a more modern Spring Boot way. Gone are the days, where questions like have you used Spring Boot " were asked to the developer. Nowadays interview expects more knowledge of Spring Boot from candidates and there are reasons for it, which we'll explore in this article.

10 Examples of New HttpClient + HttpRequest + HttpResponse In Java 11 (REST Client]

Hello guys, one of the notable addition in recent Java release is the full fledged HttpClient from Java. This is one of the class or utility which was much needed in Java. It was quite surprising that JDK doesn't have any fully functional HTTP client to connect to REST APIs in this world of API Integration. Until Java 11, Java developer rely on classes like RestTemplate and WebClient from Spring Framework to make HTTP class to REST APIs, but now you don't need to include Spring Framework in your project just for that. You can now use HttpClient class and its support classes like HttpRequest and HttpResponse to make both synchronous and asynchronous HTTP calls in Java. 

How to setup Request timeout in Spring Boot REST API? Example Tutorial

Hello guys, if you are wondering how to setup request timeout in your REST API using Spring boot then you have come to the right place. First thing first, when you make a request to another API in production, you must add timeout as there is no guarantee that you will receive response in time. Today we are going to take a look at setting up request timeout in Spring Boot Rest API. Before making it into the topic. Let’s first understand a few terms here. What is a Request timeout? A Request timeout is a deadline for services to respond to requests. It ended up returning an error with status 504 if the request fail to respond within the specified time. Request timeouts can help prevent a bad user experience, especially when a request is taking a long to respond to. There are various ways to set request timeout in Spring Boot

Top 40 Core Java Interview Questions Answers from Telephonic Round [UPDATED]

Hello guys, here is another post about preparing for Java Interviews, this time we will take a look at 40 core Java questions from the telephonic round of Java Programming interviews. Phone interviews are usually the first step to screen a candidate after selecting his resume. Since it's easy to call a candidate than to schedule a face-to-face interview, book rooms, and arrange for a meeting, a telephonic round of interviews is quite popular nowadays. There were days only one telephonic round of interviews was enough but nowadays, it's almost two and three rounds of phone interviews with different team members before you get a chance for face-to-face interviews. 

Difference between Abstraction and Encapsulation in Java and Object Oriented Programming? [Answer]

The difference between Abstraction and Encapsulation in Java is a common question in Java interviews for Beginners to check their understanding of Object-Oriented Programming and their ability to use them. Abstraction and Encapsulation in Java are two important Object-oriented programming concepts and they are completely different from each other. The only similarity between Abstraction and Encapsulation is that they are OOP concepts, other than that they mean two different things, but there is a confusing thing, both hide details to simplify things but for different reasons. 

Top 40 Binary Tree Coding Interview Questions for Programmers

Hello guys, if you are preparing for coding interviews and want to master tree-based questions then you have come to the right place. A tree is one of the most important data structures because it allows you to store hierarchical data as opposed to an array and linked list which allows storing linear data. That's why knowledge of tree data structure is very important from an interview point of view. A lot of programmers and my readers have been asking me to share some binary tree-based coding interview questions, just like I have done for the array, linked list, string, software design, patterns, hash table, and data structure in general.