Writing Clean Code in a Java Spring Boot Application: Best Practices, Dos, and Don’ts When building enterprise-grade applications, writing clean and maintainable code is crucial for long-term success. Java, coupled with Spring Boot, provides a robust framework for developing scalable applications. However, even the best tools need to be used effectively, which is where clean […]
Analyzing a Memory-Eating Spring Boot Application
When your Spring Boot application starts consuming an unusual amount of memory, it’s crucial to analyze the memory usage to identify potential issues and optimize performance. This guide will walk you through the process of taking a heap dump, downloading and installing Memory Analyzer (MAT) software, and analyzing the heap dump to identify memory leaks. […]
Understanding Linked Lists in Java | Data Structure
Linked lists are a fundamental data structure in computer science, offering a dynamic way to store and manage collections of elements. Unlike arrays, linked lists provide efficient insertion and deletion operations, making them a versatile choice for many applications. In this blog post, we’ll explore what linked lists are, their structure, and how to […]
What are Lambda Functions in Java
Lambda functions in Java, introduced in Java 8, are a way to define anonymous methods that can be passed around as arguments to other methods or stored in variables. This feature promotes functional programming, making the code more concise and readable. A lambda function in Java has the following syntax: (parameters) -> expression Or, if […]
How to Convert an Excel Sheet to JSON and Save it to a File Using Node.js
In this blog post, I guide you through the process of converting an Excel sheet to a JSON file using Node.js. This is particularly useful for tasks such as data migration, data processing, or simply making data more accessible. You’ll learn how to set up your Node.js project, install the necessary packages, and write a script to read an Excel file, convert its contents to JSON, and save the JSON data to a file. By the end of this tutorial, you’ll have a functional script that can be easily adapted to handle different Excel files and sheets as needed.
Exploring the Latest Features in Spring Framework: Spring 5 and Beyond
Exploring the Latest Features in Spring Framework: Spring 5 and Beyond The Spring Framework, a robust and widely adopted Java framework, continues to evolve with each new version, bringing in enhancements, features, and improved capabilities. As of my last knowledge update in September 2021, let’s delve into the features introduced in the latest versions, with […]
OOP Example With Java
Object-Oriented Programming (OOP) in Java: A Comprehensive Guide with Examples Object-Oriented Programming (OOP) is a programming paradigm that revolves around the concept of “objects.” Java, a widely-used programming language, is a great platform for learning and implementing OOP principles. In this article, we’ll dive into the fundamentals of OOP in Java, explaining key concepts with […]
Serialization and Deserialization in java with Example
Serialization and deserialization are two important concepts in Java that allow objects to be converted into a stream of bytes and then retrieved back into objects again. In this article, we will discuss what serialization and deserialization are, why they are important, and how to implement them in Java. What is Serialization? Serialization is the […]
Java Spring
Spring is a popular framework used for developing enterprise-level applications in Java. It is known for its modular architecture, which allows developers to use only the required components and reduce the complexity of the application. In this article, we will discuss the architecture of Spring and how it works. Overview of Spring Architecture The architecture […]
How to iterate any Map in Java
There are three main ways that you can iterate through a java map Use entrySet() function public void iterateByEntrySet(Map map) { for (Map.Entry entry : map.entrySet()) { System.out.println(entry.getKey() + “:” + entry.getValue()); } } 2. Use ketSet() function public void iterateByKeySetAndForeach(Map map) { for (String key : map.keySet()) { System.out.println(key + “:” + map.get(key)); } […]