Wednesday, December 11, 2024

The multi-part identifier XXX could not be bound in SQL SERVER [Solution]

Problem, I was doing join statement and getting this error Msg 4104, Level 16, State 1, Line 69

The multi-part identifier "a.X" could not be bound."


Cause:

I was mixing implicit joins with explicit joins. That is allowed, but you need to be aware of how to do that properly.

The thing is, explicit joins (the ones that are implemented using the JOIN keyword) take precedence over implicit ones (the 'comma' joins, where the join condition is specified in the WHERE clause).

Top 10 Websites and Online Platforms to Learn Git for FREE in 2025 - Best of Lot

Hello guys, like many programmers, I have also worked with a lot of source control systems like SVN, CVS, TFS, VSS, Mercury, and I had always wondered why so many source control systems? Why not just one. It's one of the necessary software tools for development, and everyone needs a version control and code repository, there should be a standard solution. It seems Git and Github have solved that problem now. Now, Git is everywhere from open source to closed source, from small startups to big Investment banks, but there were still legacy projects which were lying on SVN and CVS, but they are now also started moving towards it.

Top 7 Spring Microservices Courses with Spring Boot and Spring Cloud in 2025 - Best of Lot

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Difference between Wait and Sleep, Yield in Java? Example

The difference between wait and sleep or the difference between sleep and yield in Java is one of the popular core Java interview questions and asked on multi-threading interviews. Out of three methods that can be used to pause a thread in Java, sleep() and yield() methods are defined in thread class while wait() is defined in the Object class, which is another interview question. The key difference between wait() and sleep() is that the former is used for inter-thread communication while later is used to introduced to pause the current thread for a short duration. 

Difference between Thread vs Runnable interface in Java

Thread vs Runnable in Java is always been a confusing decision not just for beginnerin Java but also for developers who have done a couple of projects in Java. Thread in Java seems easy in comparison to Runnable because you just deal with one class java.lang.Thread while in case of using Runnable to implement Thread you need to deal with both Thread and Runnable two classes. though the decision of using Runnable or Thread should be taken considering differences between Runnable and Thread and the pros and cons of both approaches.

Top 10 Coursera Courses to Learn Computer Science and Software Development in 2025 - Best of Lot

Hello folks, if you are looking for the best Coursera courses for Software Development and Computer Science, you have come to the right place. Earlier, I shared the best Data Science courses and the best Python Courses from Coursera. This article will share the best courses to learn Software Development, Programming, and Computer Science for Beginners and experienced alike. 
Software development and programming are estimated to grow about 13% by 2026, which means that there is no better time to enter this field and learn new skills in software development and programming, whether web development, mobile apps, or the internet of things, so you need to do the impossible to stay above your competitor.  

Top 8 TensorFlow Courses for Beginners and Experienced in 2025 - Best of Lot

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 with his years of experience. That's the power of machine learning, which is now available to everyone because of TensorFlow.

Top 10 Free Courses to Learn Docker in 2025 - Best of Lot [UPDATED]

I have been answering a lot of questions about what programmers should learn in 2025, and Docker Container is one such skill. Docker and containers are a whole new way of developing and delivering applications and IT infrastructure. In this post, I'll talk about what Docker is and why a programmer should learn Docker. In today's world of massive scalability, where every single mobile app and web application needs to support billions of users (think of YouTube, WhatsApp, Uber), software application development and deployment have become increasingly complex. Gone are the days when the software is developed by a small team of onshore people.

Top 5 Java Design Pattern Courses for Experienced Java Developers in 2025 - Best of Lot

Hello guys, today, we'll talk about design patterns and some of the best online courses to learn design patterns in Java from scratch. If you are wondering what is a design pattern and why Java developers should learn them? then let me give you a brief overview. Design patterns are nothing but a tried and tested solutions of common programming problems, for example, the creational design patterns deal with the problems of object creation. They exist from a long time but made popular by famous Gang of four of Erich Gamma, John Vlissides, Ralph Johnson and Richard Helm in their classic 1994 book Design Patterns: Elements of Reusable Object-Oriented Software, also known as GOF design patterns. This book documented 24 design patterns which are reusable to solve common programming problems. 

Top 10 Free Courses for System Design Interviews in 2025 - Best of Lot

Hello guys, if you are preparing for System Design Interview or just want to improve your Software design skills and looking for best free resources like tutorials and free online courses then you have come to the right place. In the past, I have shared best System design coursesbookswebsites, and popular System design questions but a lot of you asked for free resources and that's why I am going to share best free System design courses I found online. These online System Design training courses are completely free and provides a diverse knowledge about different System design concepts and process. 

Top 6 Courses to learn Django Framework in 2025 - Best of Lot

Hello folks, If you are learning Python Programming language for Web Development, then you may have heard about the Django framework. Django is one of the popular web development frameworks to create modern web applications using the Python programming language. Django is also the most popular and most mature Python web development framework around. It makes it easier to build better Web apps more quickly and with less code. Building websites with Django is not just smart and efficient, but fun too! Learning Django can also boost your CV as it's a very in-demand skill.

[Udemy Course Review] - Is Java 17 Masterclass: Start Coding in 2025 by Tim Buchalka Worth it?

Hello guys, if you want to learn Java Programming from scratch and looking for the best Java course to join then you have come to the right place. Earlier, I have shared the best Java Programming courses, and today, I am going to review Java Programming Masterclass for Software Developers by Tim Buchalka, one of the highest-rated Java courses from Udemy. This course was also known as The Complete Java Masterclass before and now its known as Java 17 Masterclass: Start Coding in 2025. I have mentioned this course multiple times throughout different articles because it's currently the best course to learn Java. It's both comprehensive and up-to-date and most importantly it's very cost-effective. You can buy this 80-hour comprehensive course for just $10 which is just amazing. 

Top 10 Java Programming Courses for Beginners to Learn Online in 2025 - Best of Lot

If you are a computer science graduate or someone who wants to learn Java and looking for some awesome resources like books, tutorials, and online courses then you have come to the right place. In the past, I have shared some great books, websites, and tutorials to learn Java and in this article, I am going to share some of the best Java courses beginners can join to learn Java in 2025. One of the main problems with learning Java is keeping pace with the increasing number of releases. For example, Java 8 release completely changed how Java is written and after that, we have many Java releases in the form of Java 9Java 10, Java 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, and now Java 23. But the good thing is that the core of Java is still the same and all its releases are backward compatible.

Monday, December 9, 2024

What are AtomicInteger and AtomicLong in Java? How it works? compareAndSet() Example Tutorial

Concurrency is a fundamental aspect of modern software development, and Java provides a variety of tools and classes to help developers manage shared resources and coordinate the behavior of multiple threads. Among these tools one is atomic variables, which ensure that certain operations on shared data are performed atomically, I mean in one shot, without the need for explicit synchronization. In the past I talked about difference between atomic, synchronized, and volatile in Java and In this article, we'll explore atomic variables in Java, with a focus on AtomicInteger and AtomicLong, and explain how they work and how to use them effectively in Java. 

Is "Java Concurrency in Practice" still Valid in the Era of Java 23?

Hello guys, one of my reader Shobhit asked this question on my blog post about 12 must-reads advanced Java books for intermediate programmers - part 1. I really like the question and thought that many Java programmers might have the same doubt whenever someone recommends them to read Java Concurrency in Practice. When this book came first in 2006, Java world was still not sure of about new concurrency changes made in Java 1.5, I think the first big attempt to improve Java's built-in support for multi-threading and concurrency.