Solving org.springframework.beans.factory.BeanCreationException: Error creating bean with name X [Java Spring]

If you are using the Spring framework in your Java application and getting this error during startup it means Spring is not able to initialize the bean X and add into its application context, Why? There could be multiple reasons like a typo on the spring bean name. Let's take a closer look at the stack trace to find out the real reason:

BeanInstantiationException: Could not instantiate bean class [X]: No default constructor found; nested exception is java.lang.NoSuchMethodException: X.()

Here X is the class, which is declared as Spring bean. The error clearly says that the default constructor is not present in class X.

Top 5 Courses to learn Django and Python for Web Development - Best of Lot

Hello guys, you may know that Python is a multi-purpose programming language meaning that you can use it in different fields such as GUI application, artificial intelligence, and web application, and much more, just to name a few. Apart from Data Science, Web development is another area where Python really shines because of its awesome tools, libraries, and frameworks. And, when we talk about web applications, one of the best python frameworks that are popular is the Django framework which allows you to create a Python web application very quickly and easily.

java.lang.ClassNotFoundException: org.Springframework.Web.Context.ContextLoaderListener [Solution]

Problem : You are getting java.lang.ClassNotFoundException : org.Springframework.Web.
Context.ContextLoaderListener in your Spring-based Java Web application.
Cause: This error comes when you are using the Spring MVC framework in your Java Web application and configured org.springframework.web.context.ContextLoaderListener as a listener in your deployment descriptor also known as web.xml, but the JAR which contains this class is not available in web application's CLASSPATH.

Top 5 Free Courses to learn Node.js in 2020 - Best of lot

Node JS has completely changed the way JavaScript is used for development. Earlier JavaScript was considered as a client-side language because it runs on a browser and mostly used for client-side validations, animations, and interaction. Node.js takes that to the next level by allowing JavaScript to run on a server-side, which means you can now write JavaScript applications that can execute without a browser. Node JS uses Google Chrome's execution engine and asynchronous processing to do this. All you need to is include node.js script in your application, and you are ready to create server-side applications in JavaScript, which wasn't possible until a few years back.

Top 5 Spring Cloud Annotations for Java and Microservices Developers

If you are developing a Java application for Cloud, then you should learn Spring Cloud, a great framework and extension of the popular Spring framework, which can help you to develop a cloud-native Java application. Spring Cloud provides several necessary services required for a cloud-based Java application like configuration management, service discovery, circuit breakers, intelligent routing, micro-proxy, a control bus, one-time tokens, global locks, leadership election, distributed sessions, cluster state, etc. On top of that, it builds on the Spring framework, so it automatically provides essential features like dependency injection and inversion of control, which results in loosely coupled and easy to test Java application.

Top 5 Courses to learn Python in depth - Best of Lot

Hello guys, according to various websites, Python is among the most successful coding languages of the last years. There is a high demand for Python developers or all kinds of experience because of the versatile nature of Python programing language. For example, simultaneously with being a high-level programming language and also used for general-purposes like AI and Data visualization and building web application. Python is also an object-oriented language and open source so it has a large community that works together to develop beautiful programming language. Many developers right now over the world are jumping to use Python for its simplicity like creating GUI applications, websites, and mobile apps.