4 Steps to Prepare for System Design Interviews in 2025? [The Ultimate Guide]

Hello guys, if you are preparing for Software Engineer Interviews, or Software developer interview then you may know that how difficult it is to prepare for them because of  System Design interviews, given its open ended nature and vastness but at the same time you cannot ignore it. In Software Engineering world, if you are applying for a Senior Engineer / Lead / Architect / or a more senior role, System Design is the most sought-after skill, and hence one of the most important rounds in the whole process. If you mess this up, nothing else would matter. If you get it right though, you’re looking at a raise of at least tens of thousands of dollars annually. 

How to Design Vending Machine in Java - Part 2 [Object Oriented Design Problem with Solution]

This is the second part of the Java tutorial to show how to design Vending Machine in Java. In the first part, we have discussed the problem statement and the solution itself, but unit testing and design document were still pending, which we'll see in this article.  As I said, there are multiple ways to design a Vending machine in Java, for example, you could have easily used state design patterns to implement a vending machine, in fact, it's one of the best examples of State design patterns. Vending machine behaves differently in different states like return a product if the machine is not empty, otherwise, it just returns coins, so it ideally fits in the state design pattern.

Top 40 OOP Object Oriented Programming Interview Questions and Answers

OOP Interview questions or Object-oriented programming and design interview question are an integral part of any programming job interviews like Java, C++, or C#. Since Java is an Object-oriented programming language, it's expected from Java developers that he is good at Object-oriented analysis and design and familiar with essential OOP concepts like Abstraction, Encapsulation, and Polymorphism. Object-Oriented Programming Interview question in Java is mainly based around fundamental OOP concept and how those are implemented in Java, like Abstraction OOP concept is implemented using an interface and abstract class, Encapsulation is using private keyword, etc.

Top 50 Linux Interview Questions Answers for 3 to 5 Years Experienced

Linux is the #1 operating system for hosting real world production application. Most of the real world Java application in big IBs are hosted on RedHat Linux. This makes Linux an extremely important skill for getting a Job. Along with any programming language e.g. Java or C++, you must have good command on Linux and SQL to get a programming job. Btw, Linux is not just limited for development job but it is even more important for support roles and system admin jobs. If you are working in production support then an excellent knowledge of Linux is expected from you, which includes knowing fundamental of Linux e.g. how Linux OS works?, what is kernel or shell?, or what is init process?, as well as good knowledge of various Linux commands to perform day-to-day job, and troubleshoot any production issues. 

Review - Is Build Responsive Real-World Websites With HTML and CSS course on Udemy worth it?

Hello guys, if you want to learn HTML and CSS for Web development and looking for best online courses or tutorials then you have come to the right place. Earlier, I have shared best web development courses, books as well as free web development courses and in this article, I am going to review on of my favorite web development course from Udemy, the Build Responsive Real-World Websites With HTML and CSS by Jonas Schmedtmann. Web development is becoming a necessary field that all companies need to reach their customers either by building a simple website or building a web application that will help them offer their services to other people. 

Top 8 Free Courses to Learn Kotlin in 2025

Before we get to the 7 best free courses that will teach you everything you need to learn about Kotlin, let me tell you what it really is. It was way back in May 2019 that Google announced something we all had known inside for a long time. Kotlin had become the most popular programming language for Android app developers. The main advantage that Kotlin has over other programming languages is the fact that it is really simple and concise. It requires less programming, less testing, and less maintenance. These days, Kotlin has firmly dethroned Java as the go-to programming language for Android app developers. But Kotlin has even bigger goals. It aims to become the preferred programming language for multiple platforms, including iOS.

10 Git commands Every Developer Should Know/Learn

Hello guys, if you are a Programmer you probably have heard about Git, well most of you might have already been veteran into Git and don't need any more articles and tutorials, but if you are a beginner then Git is one of the most important skill to learn. If you are a Computer Science graduate, a Software Engineer, or even a Student trying to learn Programming on your own, Git is a must-know skill for you. If you already know the importance of Git and looking for best resources to learn Git then you have come to the right place. Earlier, I have shared best free Git courses and best places to learn Git and in this article, I am going to share examples of essential git commands which every programmer should know.

Review - Is Coursera's Meta Database Engineer Professional Certificate Worth it? (2025)

 Hello guys, If you're aiming to break into the data engineering field or looking to boost your career with a recognized credential, the Meta Database Engineer Professional Certificate on Coursera might have caught your attention. Offered by Meta (formerly Facebook), this program is designed to teach foundational to intermediate skills in database engineering—covering everything from relational databases and SQL to data modeling and cloud database solutions. It's marketed as a job-ready pathway, especially for those interested in roles like data engineer, database administrator, or back-end developer.

Top 20 Angular interview questions and Answers for 1 to 2 Years Experienced

Hello guys, if you are preparing for Angular developer interview or a web developer interview where Angular skills are required and looking for Angular interview questions to practice then you have come to the right place. Earlier, I have shared best Angular books and courses as well as web development interview questions and today, I am going to share Angular interview questions and answers for practicing interviews. Angular is one of the earliest frontend frameworks. The framework came out in 2010 at a time when modern development was starting to take place. It was, then, known as AngularJS. The popularity of AngularJS increased rapidly and it became one of the top frontend frameworks in no time. But soon, new landscapes were introduced in development, especially in JavaScript. AngularJS could not cope with it and the core team realized they needed to make the necessary changes. 

Top 5 Courses to Crack AWS Certified SysOps Administrator Associate Exam SOA-C02 in 2025

Hello guys, I have been talking about AWS certifications for quite some time now and in the past shared how to prepare for AWS Cloud Practitioner, AWS Developer Associate, and AWS Solution architect exam, and today I am going to talking about AWS Certified SysOps Administrator Associate exam. This is probably the hardest associate-level AWS certification and I strongly suggest you appear on this exam after getting AWS Developer and AWS solution Architect exam. Though this is not prerequisite and if you are working as DevOps engineer, you can directly go for this certification to further boost your credentials, but doing this will improve your chances to pass this certification in very first attempt and save both your time and money. It will also help you to score high which can further boost your Resume.

How to Learn Java Programming in 2025? [with Resources]

Hello guys, if you want to learn Java and wondering what is the best way to learn Java in 2025 then you have come to the right place. In the past, I have shared many useful resources to learn Java programming and development like the 2025 Java Developer RoadMap, best Java courses, best Java books, and this list of best websites to learn Java for FREE, and in this article, I will tell you the best way to learn Java in 2025. Learning Java programming is a rewarding endeavor that opens doors to diverse opportunities in software development. You should start by setting clear goals for your Java journey, whether it's building web applications, mobile apps, or delving into enterprise solutions. Begin with the basics, covering concepts like variables, data types, operators, and control flow statements. As Java is an object-oriented language, invest time in comprehending key OOP principles, such as classes, objects, and inheritance. 

Top 7 AWS Solution Architect Associate Certification Practice Test and SAA-C03 Exam Dumps in 2025

Hello guys, if you are preparing for the AWS Certified Solutions Architect Associate (SAA-C03 and SAA-C03) certification exam and looking for challenging practice tests to assess your preparation then you have come to the right place. In this article, I am going to share the best Practice test and questions to prepare for the AWS Solution Architect Associate  (SAA-C03) exam from Udemy, Whizlabs, and other portals, totaling more than 2000+ practice questions. These practice tests are created by AWS experts and certified developers and Solution architects like Stephane Maarek and Cloud guru Ryan Kroonenberg. Mock simulators play an important role in any certification and the AWS Solution Architect Associate-level exam is no different.

Top 5 AWS Certified Cloud Practitioner Exam (CLF-C02) Practice Questions & Dumps in 2025

As I have said before, Practice tests and exam dumps play an important role in not just passing the AWS Certified Cloud Practitioner certification (CLF-C02)  but also achieving a high score, which can truly set you apart from your competition. There are multiple benefits of going through practice tests and solving problems on an exam simulator before actual example. For example, it will help you find your strengths and weakness in advance so that you can understand your weaker areas better. They also help you to develop speed and accuracy, which is key to pass the time-bound exam like the AWS Certified Cloud Practitioner (CLF-C02) certification from Amazon.

Top 5 Practice Tests for AWS Certified Developer Associate DVA-C02 Certification in 2025 - Best of Lot

Hello guys, time and again I have said that practice questions and mock tests are an integral part of passing AWS certifications be it AWS solution architect or this AWS developer associate exam. They not only help you to prepare in an exam-like environment with time constraints but also reinforce and solidify whatever you have learned from online courses, books, tutorials, and white papers. It doesn't matter whether you have joined AWS developer courses like Neal Davis' AWS course on Udemy or Stephane Maarek's DVA-C02 course, unless and until you have practiced enough problems, you are not really ready for the exam.

Top 5 Course to Crack AWS Solution Architect Professional (SAP-C02) Certification Exam in 2025 - Best of Lot

Hello guys, today, I am going to talk about the toughest AWS certification and probably one of the toughest Cloud certifications as well, yes, you guessed it right. I am talking about the AWS Solution Architect - Professional certification. This is not just the toughest but also most desired and reputed cloud certification and not many developers and system admin can pass it. It's slightly easier to pass the AWS Solution Architect- Associate exam but this one is a completely different nut to crack. You would need an in-depth knowledge of not just cloud computing but also many essential AWS services to crack this coveted certification.