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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 »
An array is a linear data structure and collection of items stored at a contiguous memory location. Pairs of square brackets [ ] represent an array and all elements are comma (,) separated. An Array can hold multiple values(elements) of any type i.e (String, Number, Boolean, objects, and even other Arrays ) under a single Continue Reading »
Kotlin Variables are containers for storing data values. The data of variables can be changed and reused depending on conditions. To create a variable we can use var or val, and assign a value to it with an equal sign (=) Variable Declarations Kotlin uses two keywords to declare variables val and var. Example : Continue Reading »
Waterfall Model:- The Waterfall Model was the first Process Model to be launched. It is also called the successive life cycle model. It is very easy to understand and use. In the waterfall model, each phase must be completed before the next phase begins and there is no overlap in stages. The Waterfall model is Continue Reading »
What is Time Complexity? Time Complexity is the time consumed by the algorithm to complete its execution. Time Complexity is measured by summing the time of all the elementary operations. There are many notations to represent the time complexity like:- (1)Big Oh, O (2)Omega, Ω (3)Theta, Θ But, the most commonly used notation for Time Continue Reading »
A Person with another programming background is definitely confused with hoisting in Javascript. So let’s deep dive into the hoisting in javascript The Javascript engine creates the global execution context when we execute a piece of Javascript code. Global Execution Context has two phases : (i) Creation Phase (ii) Execution Phase Definition: During the creation Continue Reading »
When you hear the term software testing, do you think about one particular type of test — such as functional testing or Non Functional testing — or do you immediately start visualization the complex, interconnected web of test types that comprise the broad world of software testing? Most experienced test engineers and developers understand that Continue Reading »
“git add .” : is a command used to add a file that is in the working directory to the staging area. “git commit”: is a command used to add all files that are staged to the local repository. “git push”: is a command used to add all committed files in the local repository to Continue Reading »
The basic aim of the String Handling concept is storing the string data in the main memory (RAM), manipulating the data of the String, retrieving the part of the String, etc. String Handling provides a lot of concepts that can be performed on a string such as concatenation of string, comparison of string, finding the Continue Reading »
In this blog, we will explore the Static and Dynamically typed language. Whenever I come across these two words I am always overwhelmed by these words. So I decided to do some research and share that information as a blog. We will look into the difference between static and dynamically typed language and the similarity Continue Reading »
What are generics in java? Generics is a term that denotes a set of language features related to the definition and use of generics types and methods. Java generics programming is introduced in J2SE 5 to deal with type-safe objects. It makes the code stable by detecting the bugs at compile time. Java generic methods Continue Reading »