A candle loses nothing by lighting another candle.
Overview Mastering our craft describes the long-term process of achieving a high degree of skill and comprehensive understanding in a specific discipline. It is a journey of continuous improvement that goes beyond basic competence and is driven by passion, dedication, Read More …
🧠 Overview: How reCAPTCHA v3 Works Unlike v2 (which uses a checkbox), reCAPTCHA v3 is invisible and works by: 🧱 Architecture Components 🧩 reCAPTCHA v3 Integration Flow Diagram 💻 Sample Spring Boot Integration ✅ Backend Config 🧩 REST Controller 🛠 Service Layer 🔍 RecaptchaResponse DTO ⚙️ Read More …
Introduction Are you tired of the painstaking process of writing unit tests, especially with powerful mocking frameworks like JMockit? What if you could accelerate this process, ensure consistency, and reduce boilerplate code with the help of AI? At KnowledgeWala.com, we’re Read More …
Introduction Running a web application built with Angular for the frontend, Spring Boot for the backend, AWS MySQL RDS for the database, and deployed on AWS ECS Fargate can be complex. Issues can arise in the client-side code, server-side logic, Read More …
The gRPC (gRPC Remote Procedure Calls) is an open-source remote procedure call (RPC) framework developed by Google. It enables efficient communication between different applications running on various platforms and environments by using protocol buffers (protobuf) as the interface definition language. Read More …
Introduction This blog contains information related to interview coding problems implemented using Java programming language. Please find the examples below – This program helps to find the Duplicate records from a given Integer Array.
Overview Linear search is a simple searching algorithm that iterates through the elements of a list or array in a linear manner to find a specific value. It is straightforward but may not be the most efficient for large datasets. Read More …
Ensuring scalability and resilience in microservices architecture involves implementing certain best practices and employing specific techniques. Here are some key considerations to help achieve scalability and resilience: By applying these principles and techniques, you can enhance the scalability and resilience Read More …
In a Microservices architecture, service discovery and registration are essential components for enabling communication between services. The primary goal is to allow services to locate and connect with each other dynamically, without hard-coding specific endpoints or configurations. Here are some Read More …
In a Microservices architecture, managing deployments and rollbacks can be challenging due to the distributed nature of the system. However, with proper planning and the right tools, you can handle deployments and rollbacks effectively. Here are some best practices to Read More …
In a Microservices architecture, service communication and data sharing are critical aspects that need to be carefully designed and implemented. Here are some approaches and best practices for handling service communication and data sharing in a Microservices architecture: Remember that Read More …
Microservice architecture is an approach to software development where an application is broken down into smaller, loosely-coupled services, each independently deployable and manageable. While microservices offer several advantages, they also come with some challenges. Here are the pros and cons Read More …
Monitoring and troubleshooting microservices can be challenging due to their distributed nature. However, there are several best practices and tools available to help you effectively monitor and troubleshoot microservices. Here’s a step-by-step guide: Remember, monitoring and troubleshooting microservices is an Read More …
Handling service versioning and backward compatibility in a Microservices architecture is crucial to ensure smooth evolution and maintenance of your system. Here are some best practices for managing service versioning and backward compatibility: By following these practices, you can effectively Read More …
Handling service governance and lifecycle management in a microservices architecture involves implementing various practices and tools to ensure effective management, scalability, and maintainability of the services. Here are some key steps and considerations: Remember, microservices governance and lifecycle management are Read More …
Handling service resiliency in case of failures involves implementing strategies and best practices to ensure that your system can recover from failures and continue operating with minimal disruption. Here are some key approaches to consider: Remember that the specific strategies Read More …
No, Java technologies are not dying. Java continues to be one of the most widely used programming languages and is still heavily utilized in various domains, including enterprise software development, Android app development, and large-scale web applications. It has a Read More …
Event Drive Architecture Pattern Certainly! The Event-Driven pattern is a software design pattern that emphasizes the production, detection, and consumption of events. An event can be defined as a change in the state of a system or an occurrence of Read More …
Sidecar Pattern The Sidecar pattern is a design pattern used in the context of microservices architecture to enhance the functionality of a service without modifying its code. It involves attaching an additional container, known as the sidecar, to the main Read More …
Introduction ABC Pvt Ltd is seeking proposals from qualified vendors to provide a comprehensive digital healthcare system. We aim to enhance our healthcare services and streamline processes by adopting advanced digital solutions. This RFP outlines our requirements and expectations for Read More …
Spring Boot and Spring Cloud are related but distinct frameworks within the broader Spring ecosystem. Here are the key differences between Spring Boot and Spring Cloud: In summary, Spring Boot is focused on simplifying the development of standalone Spring applications, Read More …
Swagger is an open-source software framework that helps developers design, build, document, and consume RESTful web services. It provides a set of tools and specifications for creating and working with APIs (Application Programming Interfaces). At its core, Swagger is a Read More …
Spring Data is a project within the larger Spring Framework ecosystem that aims to simplify the development of data access layers in Java applications. It provides a consistent and unified API for interacting with different data storage systems, such as Read More …
Analyzing software application production issues requires a systematic approach to identify, isolate, and resolve the problems. Here’s a step-by-step guide on how to analyze software application production issues: Remember, software application production issues can be complex and may require iterative Read More …
Analyzing software application performance issues typically involves a systematic approach to identify and resolve performance bottlenecks. Here’s a general step-by-step process for analyzing software application performance issues: Remember that performance analysis is an iterative process, and it may require multiple Read More …
Introduction Spring Boot and Quarkus are both popular frameworks used for developing Java applications. While they serve similar purposes, there are some key differences between them: In summary, Spring Boot is a mature and widely adopted framework with extensive features Read More …
Sure! Quarkus is a popular Java framework for building cloud-native applications, and it provides excellent support for database connectivity. Here’s an example of how you can connect to a PostgreSQL database using Quarkus: Add the necessary dependencies to your project’s Read More …
Certainly! Here’s a step-by-step example of creating a simple Quarkus application: Step 1: Set up your development environment Step 2: Create a new Quarkus project Step 3: Open the project in your IDE Step 4: Implement the REST resource Step Read More …
Introduction Quarkus is a framework for building cloud-native, lightweight, and efficient Java applications. It is designed to optimize Java applications for containerized environments, serverless architectures, and Kubernetes. Quarkus aims to provide fast startup times, low memory usage, and high throughput, Read More …
Introduction This document helps our developer to understand and start developing springBoot and MongoDB-based applications. This is a very simple project and users can copy and extend it. Here’s an example of how you can develop a Hospital Management System Read More …
Introduction We can provide you with an example of a Serverless architecture using Spring Boot. In this example, we’ll create a simple RESTful API using Spring Boot and deploy it to AWS Lambda using the Serverless Framework. Here are the Read More …
To write a Spring Batch program, you’ll need to follow a series of steps. Here’s a general outline of the process: Step 1: Set up the project Step 2: Define the Job Step 3: Define the Steps Step 4: Define Read More …
Introduction Hello Friends, Welcome to knowledgeWala.com.This blog contains all information related to various project ideas and source code available in the GitHub Repository. The user has to create an account in GitHub to get the benefits of open source code. Read More …
The code peer review is an important process in the software development life cycle. It should be implemented and followed properly.This Video blog helps our development team to prepare and use a code peer review checklist to streamline the code Read More …
This Java Program helps to create Stream from various collections like List, Set, Array, etc. This Java Program helps to understand the way the Java Stream process can be processed. The developer can generate a Stream process from a Collection Read More …
Introduction Welcome to Online Pet Store and Services Ltd. This business plan is to get and prepare detailed information about the “OPSS” Application. The OPSS business helps customers to utilize the various services by just clicking on the mouse using Read More …
Introduction This tutorial contains a check style sample file for java based project for eclipse IDE. Please find the sample file below –
This tutorial consists of important Programming Practical Assignment which can be used in academic assignment as well in the work environment. These assignments problems are collected from various sources and implemented by KW Team. Please add your assignment in the Read More …
Introduction This tutorial contains a variety of Java Program which is more useful for the student of 10th and 12th. The student will get the full program code developed using the eclipse IDE. Also, the student can copy the program Read More …
Introduction This program helps to encode an input word to Pig Latin. Pig Latin is a way to encode a word. A Pig Latin is an encrypted word in English, which is generated by doing the following alterations: The first Read More …
Introduction The Two string will be anagram to each other if and only if they contain the same number of characters (order of the characters doesn’t matter). We have written this program using Java technologies, please find the code in Read More …
Introduction This program helps to demonstrate the Hello World Program. Please find the code and video below – Output Hello World!
Introduction This program helps to reverse Key to Value and Value to Key for a Map Data Structure. There are various ways to write the program and the KW team will prepare a program using a few of them. Please Read More …
Introduction This program helps to retrieve a list of the objects from another list of objects based on initial index value and Interval. This is a very common requirement when a developer wants to generate the sample report from a Read More …
Introduction This document contains a questions with answers related to Java Enterprise Architecture Exam. Please go through the docs below and let us know your feedback. These are sample questions to understand the exam pattern. As per our understanding, Everyone Read More …
Introduction There are plenty of software programming languages available right now. It is a challenging task to compare one programming language with the other. Every programming language has its own pros and cons. Many developers faced problem while selecting the Read More …
Introduction There are various ways to solve a problem. All ideas need some set of predefined steps to follow. Also, it is really critical to document all step to get the proper solution with an efficient fashion.As per our opinion, Read More …
Introduction This program helps to read multiple files from the system and compare the contents to check the duplicate records. This is a sample program written using Java Programming language. We used a very simple algorithm so everyone can understand Read More …
Introduction This Program helps to reshuffle the list of object randomly so the developer can get the different results on each and every execution of the Program. It is very useful when the client wants some report which picks the Read More …
Introduction IBM Cúram Batch process execute as a standalone process and complete the job without impacting the online application. The developer can use any batch scheduler to schedule the IBM Cúram Batch job. All Batches will use the transactional (Same Read More …
Introduction The developers have a lot of works to do and commit code various time through SVN client. Most of the time, the developer use previous commit message to commit the new code and modify the message. Even though the Read More …
Introduction This tutorial contains common important shortcuts for eclipse. Please find them in below in tabular format. Add your comments, if you want to add or know any new one which is not mentioned here. Key Purpose Ctrl+Shift+L Shows all Read More …
Introduction This Java Application helps to find out the value of X for a quadratic equation using the Shridharacharya formula. Sridhar Acharya (c. 870, India – c. 930 India) was an Indian mathematician, Sanskrit pundit andphilosopher. He was born in Read More …
Introduction The Java Comparator class helps to understand how a comparator implemented in Java programming language. This program has Reporter class which and the object of this class will be used to sort by age. Please find the entire program Read More …
Introduction This Java Swing Program helps to convert Fahrenheit to Celsius. The user has to enter the Fahrenheit and hit the enter button to allow the program to convert to Celsius. Program Code KWFahrenheitApp.java package com.kw.javaswing; import javax.swing.JFrame; Read More …
Introduction The Java Swing is very important Programming skills nowadays as it helps Developer to develop Java Program with GUI. This Java Swing Program helps to generate JTable. The user will add, update & delete the contents of the Table. Read More …
Introduction This Application helps to generate Calendar from January to December for any year which user want to generate. The user can generate calendar for the past as well for the future. There are no restrictions to generate the Calendar Read More …
Introduction There is a huge and painful job when the project is big and required a lot of ant target to be executed to build the project. IBM Cúram is also a very big project and required to execute Read More …
Introduction Eclipse is very popular IDE (Integrated Development Environment) tool which used by more than 80% of Java/J2ee developer in across the world. There are many functionalities which developer can set so it can benefit while developing a project. Every Read More …
Introduction This Program will help to send mail to others using Java Program. The Develop can use this program to build an application or APP which can send notification when any action happened like task assignment, task removal, comment on Read More …
Introduction The Abstract Design Pattern is a creational Design Pattern and used to create Family of Objects. The abstract design pattern is very important to design pattern and used in a situation where the user wants to create a family Read More …
Introduction This Java Program will help to add and display address from the Address Book. It is just a simple java program which helps to understand Java Technology. There may be many different ways to write a program and we Read More …
Introduction This is a common question asked by many developers to update the value of the variable at runtime in eclipse. This article will help to explain possible ways to update the variable values at runtime. It was a long Read More …
Introduction This program helps to read any specific Text or Contents from the file or multiple files from the folder location. This program can be used when we want to search any specific records like – There are specific Read More …
Introduction This post will have most important interview questions which used to ask in most of the reputed companies like Google, Amazon, NetApp, Wells Fargo, Wipro, Infosys, TCS, SAP etc. We are just adding Questions to this post and the Read More …
Introduction This post will have most important interview questions which used to ask in most of the reputed companies like Google, Amazon, NetApp, Wells Fargo, Wipro, Infosys, TCS, SAP etc. We are just adding Questions to this post and the Read More …
Introduction This post will have most important interview questions which used to ask in most of the reputed companies like Google, Amazon, NetApp, Wells Fargo, Wipro, Infosys, TCS, SAP etc. We are just adding Questions to this post and the Read More …
Introduction This post will have most important interview Coding and analytics questions which used to ask in most of the reputed companies like Google, Amazon, NetApp, Wells Fargo etc. We are just adding Questions to this post and the technical Read More …
Introduction This post will have most important interview questions which used to ask in most of the reputed companies like Google, Amazon, Net App, Wells Fargo etc. We are just adding Questions to this post and the technical reader will Read More …
Introduction This program helps us to verify and retrieve some information based on specific text available in the file. it will verify text against the file and will retrieve next few lines of information from the same type of files Read More …
Introduction Sun Microsystems recently announced that it is distributing and supporting Java DB based on the 100 percent Java technology, open-source Apache Derby database. Derby was previously available under its earlier name, Cloudscape, from its former owners: Cloudscape, Informix, and IBM. IBM Read More …
Introduction This program helps to retrieve Frequency of the digits from provided number. Like number 52458 is having below frequency: Digit Frequency 2 1 4 1 5 2 8 1 FlowChart Please find the flowchart of program below – Read More …
Introduction This program helps to check that entered number is a Automorphic Number or not. In mathematics an automorphic number (sometimes referred to as a circular number) is a number whose square “ends” in the same digits as the Read More …
Introduction This program helps to check whether it is special two Digit number or not. Special Two Digit Number are number for which sum of it’s sum of it’s digits and product of it’s digits is equal to the Read More …
Introduction In mathematics, the Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the two preceding ones. Example: 0,1,1,2,3,5,8,13,21,34,…………………… Read More …
Introduction This program helps to check Disarium Number for a given number. In a simple word we can say “A number will be called Disarium if the sum of its digits powered with their respective position is equal with the Read More …
Introduction This program helps to remove duplicate character from the input string. Like we passed String as “Dharmendra” and a is duplicate in the string so result will be “Dharmend“. Flowchart Please find sample flowchart diagram for this program as Read More …
Introduction This program helps to find Greatest Common Division from two given number. First of all we have to understand GCD, it is called as Greatest or highest common different in mathematics. In Simple World we can say – the Read More …
Introduction This program helps to check that entered number is Harshad Number or not. Before start writing code we have to understand Harshad Number and how it calculated. Harshad Number is a positive integer which is divisible by the sum Read More …
Introduction Java programming is very important and it is getting more popular day by day. Learning Java is also easy now a days as many website available and providing good tutorials, Learner can go though those website to get basic Read More …
Introduction This tutorial will help you to understand Pronic Number or Heteromecic Number Program. In-order to start writing any program we have to understand business requirement and what is the problem. As we know that Pronic Number or Heteromecic Number Program Read More …
Introduction Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for Read More …
Introduction FindBugs is an open source project for a static analysis of the Java bytecode to identify potential software bugs. Findbugs provides early feedback about potential errors in the code. This helps the developer to access these problems early in Read More …
Introduction PMD is an alternative to FindBugs and it is having good name in the market. PMD stands for Programming Mistake Detector. It is a free source code analysis tool which helps you to find the bugs in your java Read More …
Introduction This program helps to check weather number is a Duck Number or not. A Duck number is a number which has zeroes present in it, but there should be no zero present in the beginning of the number. Read More …
Introduction Factory design pattern is very important and useful design patter and used in various industrious & technologies. Factory design pattern is useful whenever we want to hide the object creation logic from the outside world. It is hiding Read More …
Introduction Singleton Design Pattern is complex to implement at Distributed environment, Where we have multiple JVM install. Multiple threads will invoke the Singleton class from various environment simultaneously which cause multiple object creation. We need to implement Serializable interface in Read More …
Introduction This tutorial will highlight the importance of Singleton Design pattern using java implementation. It explains various ways of implementation with flaw in the implementation. Singleton design pattern is one of the most common patterns you will see in Read More …
Introduction Design Patterns are very popular among software developers. A design pattern is a well described solution to a common software problem. Some of the benefits of using design patterns are: Design Patterns are already defined and provides industry standard Read More …
Introduction In this section, we are giving few java interview programs faced by some of my friends. If you come across any questions, post it to me. I can provide solutions. You can email me at dknitk@rediffmail.com. How to Read More …
To achieve this, JDBC specifications are agreed upon within the Java community–and each database vendor is then left to implement these specification to work with their product. Oracle Drivers Oracle provided two types of Drives. Thin OCI OCI The OCI Read More …
An Example of connecting to DB2 Database using JDBC Driver. A typical example code of connect to database will look like this Class.forName(jdbcClassName); Connection connection = DriverManager.getConnection(url, user, password); Listed below are connection examples for three common JDBC drivers Read More …
Introduction JDBC is an unofficial acronym for java database connectivity. JDBC helps us to connect to a database and execute SQL statements against a database. JDBC api provides set of interfaces and there are different implementations respective to different databases. Read More …
Introduction MySQL is a popular open source database which can be used free of charge. MySQL is a relational database. Web applications can use this database to store persistence data. This post explains how to set up Java applications to Read More …
Introduction: This post explains about eclipse useful and important configuration and setting which required for every developer who used eclipse as primary IDE(Integrated Development Environment) for project development. Effective Eclipse – Shortcut Keys The less you touch the mouse, Read More …
Introduction: The static code analysis tools Code Formatter, Findbugs, PMD and Checkstyle are widely used in the Java development community. Each has an own purpose, strength and weaknesses. This post explains about eclipse useful and important configuration and setting which required Read More …
Introduction The main purpose of this post is to provide overview of Student Information System application to end user. This application used in all educational institution for knowing student information including student name, roll number, address, parents details, fee details, marks in Read More …
Introduction Software programming (Software Engineering) courses are most often complemented by a software engineering project where a team of students has to develop a large/mini software system. Project development required a lot of efforts and guideline to develop best project. Read More …
Introduction This page contains Library management system project developed using Core Java technologies only to maintain library and Books details. This project is having basic features and it helps the developer to understand core java functionality and start the project. Read More …
Eclipse Basic Overview with Examples Introduction: Eclipse is an integrated development environment (IDE) for Java and other programming languages like C, C++, PHP, and Ruby etc. Development environment provided by Eclipse includes the Eclipse Java development tools (JDT) for Java, Read More …
Core Java Examples for Practice This section explains Core Java examples for beginners. User can practice these example in their local system. Also, students who started java as their programing skills will get help to enhance their skills. Factor of Read More …