Introduction Java 21 brings a game-changing feature to the world of programming: records. These are more than just Plain Old Java Objects (POJOs); they are a concise and expressive way to define immutable data classes, providing a host of benefits. In this article, we’ll explore records in Java 21 and understand why they’re creating a…
In the ever-evolving landscape of programming, staying up-to-date with the latest advancements is crucial. Java, a venerable language with a history of innovation, has recently released Java 21, and it’s packed with features that are set to redefine the way we code. In this comprehensive guide, we will delve into the details of Java 21,…
If you’re new to Java programming, you might be curious about how to work with data stored in a map. A map is a versatile data structure that allows you to store data in key-value pairs. But how do you go about accessing and processing that data? In this comprehensive guide, we’ll walk you through…
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…
