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Exception handling is a crucial aspect of Java programming, particularly when designing APIs and ensuring robust application behavior. This article outlines best practices for handling exceptions in Java, using Spring Boot for RESTful APIs, and emphasizes the importance of providing clear, helpful error messages to consumers. Here’s a comprehensive look into exception handling, using references Continue Reading »
Memory management is a critical aspect of web development, ensuring that applications run smoothly and efficiently without consuming excessive system resources. In the context of React, a popular JavaScript library for building user interfaces, effective memory management can significantly enhance the performance and user experience of your applications. This blog post delves into the key Continue Reading »
Spring Boot is known for its simplicity and ease of use, largely due to its extensive use of annotations. These annotations help configure and manage the application in a declarative way, reducing boilerplate code and enhancing readability. Here, we’ll explore some of the most commonly used annotations in Spring Boot. 1. @SpringBootApplication This is a Continue Reading »
Introduction: In the dynamic world of Java programming, the Diamond Problem stands as a formidable challenge, often leading to ambiguity and confusion in class hierarchies. This article aims to shed light on the Diamond Problem, its implications, and effective strategies to overcome it. What is the diamond problem? The Diamond Problem arises when a class Continue Reading »
Introduction: In Spring Boot applications, interacting with databases is a fundamental task. Whether you’re fetching data, updating records, or performing complex queries, efficient database operations are crucial for application performance. One powerful tool at your disposal for constructing dynamic queries is the Criteria API, which allows you to build queries programmatically and dynamically based on Continue Reading »
Prerequisites Basic docker knowledge & commands, can go through this blog Docker-For-Beginners by InnovationM. Introduction In this blog I will guide you step-by-step how to use google jib plugin with docker. What is Jib ? Jib is part of Google Container Tools which builds optimized Docker and OCI images for your java application and push Continue Reading »
In the ever-evolving landscape of software development, Google’s Dialogflow is a powerful tool that enables developers to build conversational interfaces form applications, and integrating it with a Spring Boot backend can provide a seamless and efficient user experience. In this guide, we will explore the steps to integrate Dialogflow into a Spring Boot application, empowering Continue Reading »
Gradle and Maven are both popular build tools used in the software development process, particularly in Java projects. They serve the purpose of automating the process of building, testing, packaging, and managing dependencies for a software project. While they share common goals, they have distinct characteristics and approaches. Gradle: Build Script Language: Language: Gradle build Continue Reading »
In the ever-evolving landscape of web application development, choosing the right framework for your backend can make all the difference. One such framework that has been gaining significant attention and popularity is NestJS. With its unique blend of modern JavaScript and TypeScript features, as well as its modular architecture inspired by Angular, NestJS has quickly Continue Reading »
In JavaScript, a polyfill is a piece of code (usually a JavaScript script) that provides modern functionality to older browsers or environments that lack support for certain features. Polyfills help bridge the gap between what’s available in modern JavaScript and what’s supported in older browsers, allowing developers to use newer features without worrying about compatibility Continue Reading »
In the realm of software development, Requirement Engineering (RE) stands as a critical and foundational process that lays the groundwork for successful project outcomes. Requirements engineering is the process of identifying, analyzing, specifying, validating, and managing the needs and expectations of stakeholders for a software system. In this blog, we’ll dive into the world of Continue Reading »
Java 17 was released in September 2021 and it comes with several new features and improvements. In this blog, we will take a closer look at some of the most notable features of Java 17. Sealed Classes (JEP 409) Sealed classes are a new type of class introduced in Java 17. They provide more control Continue Reading »
A temporal dead zone (TDZ) is the area of a block where a variable is inaccessible until the moment the computer completely initializes it with a value. A block is a pair of braces ( {…} ) used to group multiple statements. The temporal Dead Zone is the period of time during which the let Continue Reading »
Java applets are small programs that run on a web browser to perform a specific task. They were introduced with the release of the first version of Java in 1995 and quickly became popular for their ability to add dynamic content to web pages. Applets are essentially mini-programs that are written in Java and run Continue Reading »
The Meaning of Coalesce is to come together to form one larger group, substance, etc. In SQL, the COALESCE() function is a powerful tool used to handle NULL values in queries. The function takes multiple arguments and returns the first non-NULL value. This function is extremely useful when dealing with NULL values in database tables. Continue Reading »
Function in JavaScript Function is a block of law that is designed to perform a particular task is called JavaScript Function Type of function in JavaScript Named Function Anonymous Function Immediately invoked function expressions Named Function Named function is the function that we define it in the law and also call it. Whenever we need Continue Reading »
Java Predicate is a functional interface that is part of Java.util.function package. It was introduced in Java 8. It represents a single argument function that returns a boolean value. A Predicate takes an input and returns either true or false, depending on the condition that is specified in the function. Using predicate to check if Continue Reading »
Memoization is a powerful technique used in computer science to optimize the performance of functions that are called repeatedly with the same arguments. In JavaScript, memoization is particularly useful for expensive computations that involve complex algorithms or data structures. At its core, memoization involves caching the result of a function based on its input arguments. Continue Reading »
Before discussing into JavaScript pass-by-reference or pass-by-value function, it is known about the difference between primitive and non-primitive. Primitive Values: – Data Types string, number, null, undefined, symbols, and Boolean are primitive values. Primitive values are passed by value in JavaScript. Non Primitive Values: – object, array, and function are non-primitive values. All objects and Continue Reading »
Oracle provides new Java versions every six months. Even before it was launched, the September Java 11 version created quite a stir in the computer science industry by announcing that commercial usage of Java would subsequently be charged. The following articles will highlight major JDK 11 features, advancements, and deprecated functionality. Important Changes and Information: Continue Reading »
Performance tuning is an essential aspect of software development, especially in enterprise-level applications where performance plays a significant role in user satisfaction and system stability. Java, being a popular programming language for enterprise-level applications, provides many tools and techniques for performance tuning. In this blog, we will discuss performance tuning in Java and the best Continue Reading »
A unary function is a mathematical function that takes only one argument or input. It is a function of a single variable, which means that it operates on a single operand. The term “unary” comes from the Latin word “unarius” meaning “consisting of one.” For example, the function f(x) = x^2 is a unary function Continue Reading »
The actuator is mainly used to expose operational information about the running application — health, metrics, info, dump, env, etc. It uses HTTP endpoints or JMX beans to enable us to interact with it. Once this dependency is on the classpath, several endpoints are available for us out of the box. The main benefit of Continue Reading »
As per the definition of Javascript Developer, Closure is defined as the combination of a function bundled together (enclosed) with references to its surrounding state (the lexical environment). But what is meant by the terms “enclosed”, “surrounding state“, and lexical environment? No need to worry, we’ll discuss their terms and closure in this article with Continue Reading »
In Javascript, both the spread and rest operators have the same syntax which is three dots(…) but they differ in their function. The main difference between them is that the spread operator expands the array into multiple elements while the resting operator Condenses them into a single element Merge two arrays using the spread operator Continue Reading »
Abstraction is a process of hiding the internal details of an application from the world and showing only functionality to the user. Example – A man driving a car. The man only knows that applying brakes will stop the car, but he does not know about the inner mechanism of the car or the implementation Continue Reading »
Quite often, a Java Stream or other component needs an object passed thereto to perform some form of calculation or process, but when the method is complete, nothing returns from the tactic. this is often where Java’s functional Consumer interface comes in handy. According to JavaDoc, the patron interface accepts any object style as input. Continue Reading »
Table of contents Definition Conceptual Implementation Java Code & Explanation Applications of DFS Definition Depth First Search (DFS) is an algorithm for traversing Graph Data Structure. The algorithm starts at some arbitrary node in the graph and explores as far as possible along each branch before backtracking. Stack Data structure is needed to keep Continue Reading »
Use Derived Query Methods of Spring Data JPA Repositories instead of writing your own queries. For the simple jpa queries, we generally use @Query annotation to make the queries, but the best practice says that we should use Derived Query Methods instead. Most developers hardly use one or two derived query methods like findById, and Continue Reading »
What is WebSocket? WebSocket provides a way to exchange data between the browser and server via a persistent connection. The data can be passed in both directions as “packets”, without breaking the connection and the need for additional HTTP requests. Where can we use WebSocket? we use WebSocket where we need real-time data sharing Continue Reading »