Introduction When you start your journey in Java programming, you are bound to encounter various types of errors. One of the common compilation errors you may come across is the dreaded “Cannot find symbol” error. In this article, we’ll demystify this error, understand what it means, explore its causes, and most importantly, learn how to…
Introduction: As a developer working with Spring Boot, encountering errors during application setup, including ‘DataSource Errors,’ is not uncommon. One such error message that can be encountered relates to database configuration: ‘Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.’ In this article, we will delve into…
Introduction When developing Java applications, the need to generate random integers within a specific range is a common requirement. However, this seemingly simple task can lead to issues like integer overflow and bias if not handled correctly. In this article, we will explore the best practices for generating random integers in Java, ensuring that the…
In this step-by-step guide, we’ll show you how to create a Spring Boot web application that allows you to write data to an Excel file, display it on a web page, and even download the Excel file (write, view & download) with a click of a button. We’ll keep things simple so that anyone, regardless…
When it comes to working with data in Java, you often encounter situations where you need to store and retrieve information efficiently. Two of the most commonly used tools for this purpose are HashMap and Hashtable. In this guide, we will delve deep into the world of Java’s key-value pairs and explore the differences, advantages,…
Introduction In the realm of Java programming, where mastering data manipulation is essential, one prevalent challenge is efficiently converting data from an InputStream into a String. Whether you’re handling text files, managing network connections, or processing API responses, the ability to turn InputStream into strings like a pro in Java is a vital skill for…
Introduction : Are you new to Spring Boot and looking for a simple way to boost your understanding? You’re in the right place! In this beginner-friendly guide, we’ll unravel the mysteries of three crucial Spring Boot annotations: @Bean, @Configuration, and @EnableAutoConfiguration. By the end of this article, you’ll be well on your way to becoming…
Introduction: When you’re working on a Spring Boot application, you might come across the need to add something called a context path. Don’t worry; it’s not as complicated as it sounds. Think of it like adding a label to your application’s web address. In this guide, we’ll help you understand how to Add a Context…
Handling exceptions is a crucial aspect of writing robust and reliable code in Java and Spring Boot. Exceptions are unexpected events or errors that can occur during program execution, and it’s essential to handle them gracefully to ensure your application doesn’t crash or produce unpredictable results. In this blog post, we will explore two common…
Introduction Spring Boot Security is a powerful framework that provides authentication and authorization features for your Java applications. However, there may be scenarios where you want to disable the login screen and allow public access to certain parts of your application without the need for user authentication. In this article, we’ll guide you through the…
Introduction Hey there, fellow Java explorer! Today, we’re going to dive into a concept that can sometimes puzzle even experienced programmers: Java’s pass-by-value. We’ll break it down in a way that’s easy to grasp, even if you’re just starting your Java journey. Java’s Pass-by-Value: What Does It Really Mean? Okay, let’s start with the basics….
Are you a student or budding developer looking to dive into the world of microservices? You’ve probably heard about the wonders of microservices architecture, but there’s even more magic waiting to be explored. In this blog, we’re going to unravel the secrets of Shared Databases and Multiple ORM in Microservices or Shared Databases in Microservices….
