Coding N Concepts

Implementing SAFe Practice Consultant SPC 6.0 Exam Questions

Sat, 03 Jan 2026 00:00:00 +0000

Comprehensive set of Implementing SAFe Practice Consultant SPC 6.0 exam questions and practice tests designed to help you pass the SPC 6.0 Implementing SAFe certification on your first attempt.
These SPC 6.0 sample questions cover all official SAFe Practice Consultant exam domains and topics, so you can assess your readiness and focus on the areas that matter most.

Salesforce Platform Developer (Plat-Dev-201) Exam Questions

Mon, 25 Aug 2025 00:00:00 +0000

Comprehensive list of Free Salesforce Platform Developer (Plat-Dev-201) Exam Questions curated for cracking the exam in first attempt.

AWS Certified Solutions Architect Associate (SAA-C03) Exam Notes

Sun, 27 Apr 2025 00:00:00 +0000

If you are planning or preparing for AWS Certified Solutions Architect Associate (SAA-C03) exam then this article is for you to get started.

AWS Certified Solutions Architect Associate (SAA-C03) Exam Questions

Sun, 27 Apr 2025 00:00:00 +0000

Comprehensive list of Free AWS Certified Solutions Architect Associate (SAA-C03) exam questions curated for cracking the exam with confidence.

SAFe Government Practitioner SGP Exam Questions

Sat, 19 Apr 2025 00:00:00 +0000

Comprehensive list of SAFe Government Practitioner SGP Exam Questions curated for cracking the exam in first attempt.

SAFe DevOps Practitioner SDP 6.0 Exam Questions

Fri, 18 Apr 2025 00:00:00 +0000

Comprehensive list of SAFe DevOps Practitioner SDP 6.0 Exam Questions curated for cracking the exam in first attempt.

SAFe Practitioner SP 6.0 Exam Questions

Thu, 17 Apr 2025 00:00:00 +0000

Comprehensive list of Free SAFe Practitioner SP 6.0 (SAFe for Teams) Exam Questions curated for cracking the exam in first attempt.

SAFe Release Train Engineer RTE 6.0 Exam Questions

Sun, 13 Apr 2025 00:00:00 +0000

Comprehensive list of Free SAFe Release Train Engineer RTE 6.0 Exam Questions curated for cracking the exam in first attempt.

SAFe Product Owner/Producer Manager POPM 6.0 Exam Notes

Sat, 09 Mar 2024 00:00:00 +0000

If you are planning or preparing for SAFe Product Owner/Producer Manager POPM 6.0 (Scaled Agile Framework) certification then this article is for you to get started.

Singapore Driving - Basic Theory Test (BTT)

Sat, 09 Mar 2024 00:00:00 +0000

A comprehesive guide for Singapore Driving - Basic Theory Test (BTT) including the free practice quiz.

SAFe Scrum Master SSM 6.0 Exam Questions

Tue, 27 Feb 2024 00:00:00 +0000

Comprehensive list of Free SAFe Scrum Master SSM 6.0 Exam Questions curated for cracking the exam in first attempt.

SAFe Scrum Master SSM 6.0 Exam Notes

Sat, 03 Feb 2024 00:00:00 +0000

If you are planning or preparing for SAFe Scrum Master SSM 6.0 (Scaled Agile Framework) certification then this article is for you to get started.

Calculate Age from Birth Date in Java

Wed, 03 Jan 2024 00:00:00 +0000

In this quick tutorial, we’ll learn how to calculate the age in human-readable format in Java.

Date Difference in Human Readable format in Java

Wed, 03 Jan 2024 00:00:00 +0000

In this quick tutorial, we’ll learn how to print the difference between two dates in human-readable format in Java.

Leading SAFe Agilist SA 6.0 Exam Questions

Tue, 03 Oct 2023 00:00:00 +0000

Comprehensive list of Free 200+ Leading SAFe Agilist SA 6.0 Exam Questions curated for cracking the exam in first attempt.

Configure Log4j 2 Logging in Spring Boot

Sun, 01 Oct 2023 00:00:00 +0000

In this quick tutorial, we’ll configure Log4j 2 logging by replacing it with the default Logback config in the Spring Boot application.

How to generate Code Snippet from Postman

Sat, 30 Sep 2023 00:00:00 +0000

In this tutorial, we’ll learn how to generate a Code snippet from Postman for HTTP GET, POST, PUT, DELETE requests in various programming languages like C, C#, cURL, Dart, Go, Java, Javascript, NodeJs, Objective-C, PHP, Python, R, Ruby, etc.

Configure Multiple Kafka Consumer in Spring Boot

Wed, 30 Aug 2023 00:00:00 +0000

This post describes how to configure Multiple Kafka Consumer in Spring Boot application from a property file having different configurations such as Kafka cluster, topic, etc.

Configure Multiple Kafka Producer in Spring Boot

Wed, 30 Aug 2023 00:00:00 +0000

This post describes how to configure Multiple Kafka Producer in Spring Boot application from a property file having different configurations such as Kafka cluster, topic, etc.

Sort Map by Key using TreeMap in Java

Sat, 27 May 2023 00:00:00 +0000

In this tutorial, we’ll learn how to use TreeMap to sort a Map by its keys in Java

Sort Array List of Objects in Java

Tue, 23 May 2023 00:00:00 +0000

In this tutorial, we’ll learn how to sort an Array List of Objects in Java

Print Array in Java

Sun, 21 May 2023 00:00:00 +0000

In this tutorial, we’ll learn how to print the elements of a given Array in Java.

Hashicorp Terraform Associate (003) Exam Questions

Sat, 13 May 2023 00:00:00 +0000

Comprehensive list of Free 200+ Hashicorp Terraform Associate (003) Exam Questions curated for cracking the exam in first attempt.

Hashicorp Terraform Associate (003) Exam Guide

Thu, 13 Apr 2023 00:00:00 +0000

A complete study guide for Hashicorp Terraform Associate Certification Exam (003).

Java Regex to Validate IPv4 Address

Sun, 12 Mar 2023 00:00:00 +0000

In this article, we’ll learn how to validate IPv4 addresses using Java Regex

Assert Optional Value in Java

Sun, 05 Mar 2023 00:00:00 +0000

In this article, we will learn how to assert Optional in Java using JUnit 5 and AssertJ assertion libraries.

Assert Thrown Exception in Java

Sun, 05 Mar 2023 00:00:00 +0000

In this article, we will learn how to assert thrown exceptions in Java using JUnit 5 and AssertJ assertion libraries.

Test Object's multiple properties in Single Assert

Sun, 05 Mar 2023 00:00:00 +0000

In this article, we will learn how to assert Object’s multiple properties in a single assert in JUnit 5, Hamcrest, and AssertJ assertion libraries.

Read PDF File in Java

Sat, 25 Feb 2023 00:00:00 +0000

In this tutorial, we’ll learn how to read a PDF file in Java using different libraries.

Writing Effective Java Tests with Assertion Libraries

Sun, 19 Feb 2023 00:00:00 +0000

Java has several assertion libraries that can help you with testing and debugging your code. In this article, we’ll look at various assertions libraries and compare them.

Unit Test with JUnit 5 in Java

Thu, 22 Dec 2022 00:00:00 +0000

In this tutorial, we’ll learn how to write efficient Junit test cases in Java using Junit 5 ( Jupiter ) assertions.

Unit Test with AssertJ in java

Tue, 20 Dec 2022 00:00:00 +0000

In this tutorial, we’ll learn how to write efficient unit test cases in Java using AssertJ assertThat() assertions.

Unit Test with Hamcrest in java

Sun, 18 Dec 2022 00:00:00 +0000

In this tutorial, we’ll learn how to write efficient Junit test cases in Java using Hamcrest assertThat() with Matchers.

Customize Jackson JSON Mapper in Spring Boot

Fri, 16 Dec 2022 00:00:00 +0000

In this tutorial, we’ll learn how to customize the default Jackson JSON Mapper in Spring Boot Web Application with various Jackson configurations.

How to Change Context Path in Spring Boot

Fri, 16 Dec 2022 00:00:00 +0000

In this quick article, we learn how to change the servlet context path in the Spring Boot application.

Use Spring Boot Project as a Dependency

Tue, 13 Dec 2022 00:00:00 +0000

In this article, we will learn how to build a Spring Boot JAR as a library and use it as a dependency in other applications.

Log Hibernate/JPA SQL Queries in Spring Boot

Sun, 11 Dec 2022 00:00:00 +0000

In this article, we will learn how to log SQL statements in the Spring Boot application for debugging.

Format number to 2 decimal places in Java

Thu, 01 Dec 2022 00:00:00 +0000

Quick example to format any type of number - int, long, float, and double to 2 decimal places in Java

Custom HTML Error Page using Thymeleaf

Mon, 28 Nov 2022 00:00:00 +0000

In this article, we’ll learn how to customize default Whitelabel Error Page in Spring Boot using Thymeleaf HTML templates

Disable Whitelabel Error Page in Spring Boot

Sun, 27 Nov 2022 00:00:00 +0000

In this article, we’ll learn how to disable default Whitelabel Error Page in Spring Boot.

Convert XSD Schema to JSON using JAXB

Sun, 28 Aug 2022 00:00:00 +0000

In this tutorial, we will learn how to auto generate class files from XSD schema using JAXB task and use them to convert to Json.

9 Balls Weight Puzzle (Solved)

Fri, 12 Aug 2022 00:00:00 +0000

This is my favorite weight puzzle which have been asked from me in many interviews over the past few years.

Cool ideas for informal business meetings, sessions, and trainings

Fri, 22 Jul 2022 00:00:00 +0000

Some of the cool ideas for informal business meetings, trainings, or knowledge sharing sessions, which are effective:-

Ranges in Kotlin

Fri, 22 Jul 2022 00:00:00 +0000

In this post, we’ll see quick examples of creating ranges using various range expressions and iterating over ranges in Kotlin.

Split String by delimiter in Kotlin

Mon, 27 Jun 2022 00:00:00 +0000

In this post, we’ll see quick examples of splitting a string by delimiter to list in Kotlin.

Hibernate Interview Questions

Wed, 22 Jun 2022 00:00:00 +0000

List of frequently asked hibernate interview questions. Keep following this post for regular updates.

Async Fetch Data from N Sources and Combine In Java

Sun, 29 May 2022 00:00:00 +0000

Fetch Data from multiple sources asynchronously using Java executor fixed thread pool and combine them in Java

Async Fetch Data from N Sources and Combine In Kotlin

Sun, 29 May 2022 00:00:00 +0000

Fetch Data from multiple sources asynchronously using Kotlin Coroutines and combine them in Kotlin

Clean Code in Kotlin

Sun, 22 May 2022 00:00:00 +0000

In this post, we’ll learn how to write clean code in Kotlin with some practical examples and make our code more concise and readable

Leading SAFe Agilist SA 6.0 Exam Notes

Fri, 04 Mar 2022 00:00:00 +0000

If you are planning or preparing for Leading SAFe Agilist 6.0 (Scaled Agile Framework) certification then this article is for you to get started.

Send Email with Thymeleaf template in Spring Boot

Thu, 16 Dec 2021 00:00:00 +0000

In this article, we’ll learn how to compose emails using Thymeleaf template and send emails using spring framework’s JavaMailSender.

Zip and Unzip Files in Java

Wed, 20 Oct 2021 00:00:00 +0000

In this tutorial, we’ll learn how to zip a file or directory into an archive and how to unzip the archive into a directory using Java core libraries.

Convert Long to String in Java

Fri, 15 Oct 2021 00:00:00 +0000

In this tutorial, we’ll learn different methods to convert long primitive or Long object to String in Java

ApacheHttp5 FeignClient SSL and Proxy Connection in Spring Boot

Sun, 19 Sep 2021 00:00:00 +0000

In this article, we’ll learn how to configure a FeignClient with SSL and Proxy Connection using ApacheHttp5 in your Spring Boot project.

Using Streams API with Map in Java 8

Tue, 14 Sep 2021 00:00:00 +0000

Java 8 streams API is a widely used feature to write code in a functional programming way. In this tutorial, we’ll discuss how to use Streams API for Map creation, iteration and sorting.

Deployment of Spring Boot Microservices using Docker and Jenkins

Thu, 01 Jul 2021 00:00:00 +0000

In this article, we’ll learn how to automate the build & deployment of Spring boot based microservices using Docker, Jenkins, Gradle and Git.

RESTful API documentation using OpenAPI

Fri, 25 Jun 2021 00:00:00 +0000

Documentation is essential when you are building RESTFul APIs in spring boot application. In this tutorial, we’ll learn how to configure the documentation using OpenAPI in Spring Boot.

Change Default Feign Client implementation in Spring Boot

Sat, 12 Jun 2021 00:00:00 +0000

In this quick tutorial, we’ll learn how to change default Feign Client implementation to ApacheHttpClient or OkHttpClient in Spring Boot application.

Configure embedded Undertow server in Spring Boot

Sat, 12 Jun 2021 00:00:00 +0000

In this quick tutorial, we’ll configure embedded Undertow server by replacing it with default Tomcat server in Spring Boot web application.

Conditional Annotations in Spring Boot

Fri, 11 Jun 2021 00:00:00 +0000

In this tutorial, we’ll take a look at Conditional Annotations in Spring Boot with examples.

MarkDown Getting Started

Wed, 26 May 2021 00:00:00 +0000

In this post, we’ll understand Markdown, its working and applications with examples.

MarkDown Cheat Sheet

Sun, 23 May 2021 00:00:00 +0000

Markdown cheat sheet gives you a quick overview of all the Markdown syntax elements.

The Markdown Syntax Guide

Sun, 23 May 2021 00:00:00 +0000

In this comprehensive guide, we’ll learn Markdown syntax with examples.

Apache Kafka Installation on Windows and MacOS

Mon, 17 May 2021 00:00:00 +0000

In this tutorial, We’ll learn how to install and run Apache kafka broker in local machine running on Windows or Mac operating system.

MarkDown and HTML Comparison

Wed, 12 May 2021 00:00:00 +0000

Markdown is gaining more popularity compare to HTML to style and format your content in text editors, blogs, and social media. Why so?

Initialize Map with Values in Java

Fri, 23 Apr 2021 00:00:00 +0000

In this tutorial, we’ll learn different ways to initialize a Map with values in Java.

Build GraphQL API with Spring Boot

Thu, 15 Apr 2021 00:00:00 +0000

In this article, we’ll learn step by step, how to build GraphQL API with Spring Boot.

Optional Chaining ?. operator in JavaScript

Wed, 27 Jan 2021 00:00:00 +0000

Optional chaining ?. operator is used to access the nested object properties with implicit nullish check.

How to Loop through an Array in JavaScript

Sun, 24 Jan 2021 00:00:00 +0000

In this tutorial, we’ll learn how to loop through elements of an Array using different ways in JavaScript.

How to Search an Array in JavaScript

Sun, 24 Jan 2021 00:00:00 +0000

In this tutorial, we’ll learn how to search elements in an Array using different Array methods in JavaScript.

Customize Google Analytics in Hugo Website

Wed, 20 Jan 2021 00:00:00 +0000

If you are using Hugo as a static site generator tool and using google analytics for your website then you can customize the analytics script and replace the old google analytics script analytics.js with recommended new script gtag.js with just few changes.

All About Annotations in Java

Sat, 26 Dec 2020 00:00:00 +0000

In this tutorial, we’ll learn basics of Java Annotations, Built-in Java Annotations, How to create single-value, multi-value, repeated and type annotations and How to use them at runtime.

Elastic Search - Basic Concepts

Sat, 19 Dec 2020 00:00:00 +0000

Elasticsearch (popularly known as ELK stack) is an open-source, distributed, and near real-time search engine, Which can be used to solve a variety of use-cases. Let’s understand the basic concepts of Elasticsearch in this post.

How to generate Random Numbers in Java

Wed, 25 Nov 2020 00:00:00 +0000

In this tutorial, we’ll learn how to generate a random number, generate a random array or list, get a random element from an array or list, and shuffle the list elements.

Relational Database Interview Questions

Wed, 18 Nov 2020 00:00:00 +0000

List of frequently asked relational database interview questions. Keep following this post for regular updates.

Design your own Hash Map in Java

Mon, 16 Nov 2020 00:00:00 +0000

In this tutorial, we’ll learn how to design our own HashMap data structure in Java.

Basics of Time Complexity

Wed, 07 Oct 2020 00:00:00 +0000

In this tutorial, we’ll learn how to calculate time complexity of a function execution with examples.

System Design Cheat Sheet

Mon, 05 Oct 2020 00:00:00 +0000

This System Design Cheat Sheet gives you a quick idea to tackle with the building blocks of any system design interview questions. Keep following this post for regular updates.

Java Multithreading (Concurrency) Interview Questions

Tue, 29 Sep 2020 00:00:00 +0000

Comprehensive List of Java Multithreading (Concurrency) Interview Questions based on my personal interview experience over the last few years. Keep following this post link for regular updates.

Ping Pong using Threads in Java

Sun, 27 Sep 2020 00:00:00 +0000

This problem is frequently asked in the interview to check your understanding on threads and your programming skills. Problem statement might change for e.g.

Print ping pong using two threads.
Print alternate number using two threads.
Print even numbers by one thread and odd numbers by another thread.

How to Add Element at Beginning of an Array in JavaScript

Sun, 20 Sep 2020 00:00:00 +0000

In this tutorial, we’ll learn different ways of adding new elements at the beginning of an Array in JavaScript.

Initialize List with Values in Java

Sat, 19 Sep 2020 00:00:00 +0000

In this tutorial, we’ll learn different ways to initialize List, ArrayList and LinkedList with values in single line in Java.

Convert Roman to Integer in Java

Fri, 18 Sep 2020 00:00:00 +0000

Problem: Given a Roman numeral, convert it to an Integer.

Convert Integer to Roman in Java

Tue, 15 Sep 2020 00:00:00 +0000

Problem: Given an Integer input, convert it to a Roman numeral. Input is within the range from 1 to 3999.

Combine Two or more JSON Objects in JavaScript

Tue, 08 Sep 2020 00:00:00 +0000

In this quick tutorial, we’ll learn how to combine two or more JSON object into one object in JavaScript.

Customize RSS in Hugo Website

Fri, 04 Sep 2020 00:00:00 +0000

In this tutorial, we’ll learn how to disable, rename, or customize RSS XML Feed for Hugo website.

application.properties vs application.yml in Spring Boot

Mon, 31 Aug 2020 00:00:00 +0000

In this tutorial, we’ll compare Spring Boot Configuration using YAML file and Property file and their advantages one over the other.

Inspect Overlay Elements using Chrome DevTools

Thu, 27 Aug 2020 00:00:00 +0000

In this tutorial, we’ll learn how to inspect overlay elements using Chrome DevTool.

Transform JSON-LD in Java

Sun, 16 Aug 2020 00:00:00 +0000

In this tutorial, we’ll learn how to transform a Java Object to JSON-LD and vice versa. Also learn how to verify the schema of JSON-LD.

How to generate Curl Command from Postman

Wed, 12 Aug 2020 00:00:00 +0000

In this tutorial, we’ll learn how to generate Curl command using Postman.

How to Make AJAX Calls in JavaScript

Mon, 10 Aug 2020 00:00:00 +0000

In this tutorial, we’ll learn how to make AJAX calls in JavaScript.

Builder Design Pattern In Java

Sat, 01 Aug 2020 00:00:00 +0000

Builder Design Pattern is one of the commonly used design patterns. It falls under the category of Creational Design Patterns.

Multiple Authors Support in Hugo Website

Sun, 26 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to manage multiple authors in Hugo Website

Auto number Headings & TOC in Hugo Pages

Fri, 24 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to generate auto-numbering for headings, subheadings, and TOC in Hugo Pages.

Disable Pages in Hugo Website

Sun, 19 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to disable different kind of pages in Hugo website such as home, section, taxonomy, term, sitemap.xml, RSS feeds, robots.txt and 404 error pages.

Disable Categories and Tags Pages in Hugo Website

Sat, 18 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to disable taxonomy and term pages (such as Categories and Tags) in Hugo website.

Error Handling in JavaScript

Tue, 14 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn error handling using try, catch, finally and throw statements. We’ll also learn about built-in JavaScript error objects (Error, SyntaxError, ReferenceError, etc.) and how to define custom errors.

CSS units for font-size: px, em and rem

Sat, 11 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn different units to measure font-size in CSS i.e. px, em, and rem, their differences, and which one to use when.

Difference Between forEach() and map() in JavaScript Array

Wed, 08 Jul 2020 00:00:00 +0000

In this tutorial, we’ll see the difference between Array.forEach() and Array.map() methods in JavaScript Array.

How to Divide an Array in Equal Parts in JavaScript

Sun, 05 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to divide an Array in equal parts using Array.splice() method in JavaScript. We will also learn how it is different from Array.slice() method.

How to Replace all Occurrences of a String in JavaScript

Sun, 05 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to replace all occurrences of a string in JavaScript using String.replace() method. We will also look at String.split() and Array.join() approach.

How to Reverse an Array in JavaScript

Sun, 05 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to reverse an Array in JavaScript using Array.reverse() method.

Math Constants and Functions in JavaScript

Sat, 04 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn about Math Object in JavaScript, which allows us to use mathematical constants such as π, e, √2 and perform mathematical operations on numbers such as pow(), sqrt(), max(), min(), random(), abs(), ceil(), floor(), round(), and truc().

Jackson JSON Request and Response Mapping in Spring Boot

Thu, 02 Jul 2020 00:00:00 +0000

In this tutorial, we’ll learn how to map Jackson JSON request and response in Spring Boot Application with various Jackson configurations.

Add Sub Menu in Hugo Website

Thu, 25 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to add sub menu (nested menu) in Hugo Website.

A Step-by-Step Guide to Create an AWS Account

Mon, 22 Jun 2020 00:00:00 +0000

This step by step guide is very helpful for beginners to create a personal account with AWS.

Build Your First AWS DeepRacer Model

Mon, 22 Jun 2020 00:00:00 +0000

This step-by-step guide is helpful for beginners trying their hands on machine learning and creating their first AWS DeepRacer model.

How to use Array Destructuring in JavaScript

Sun, 21 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn the usage of Array Destructuring in JavaScript ES6 with examples.

How to use Object Destructuring in JavaScript

Sun, 21 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn the usage of Object Destructuring in JavaScript ES6 with examples.

How to Capitalize First Letter of String in JavaScript

Fri, 19 Jun 2020 00:00:00 +0000

In this quick tutorial, we’ll learn how to capitalize the first letter of a String in JavaScript.

How to Remove Duplicates from Array in JavaScript

Fri, 19 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to remove duplicates from an Array in JavaScript and return only unique values.

How to Clone an Array in JavaScript

Thu, 18 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to clone an Array in JavaScript and also learn the difference between shallow copy and deep copy of an Array.

How to Sort an Array in JavaScript

Thu, 18 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to sort an Array in JavaScript by using Array.sort() method.

Java-8 Interview Questions

Wed, 17 Jun 2020 00:00:00 +0000

These Java 8 interview questions are based on my personal interview experience. Keep following this post for regular updates.

JavaScript Console API Walkthrough

Tue, 16 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn JavaScript’s Console API methods with quick examples…

JavaScript Debugging Tips and Tricks

Thu, 11 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn plenty of tips and tricks for debugging JavaScript code using Chrome DevTool, different ways of logging to the console using console APIs, and much more…

Client Side Search Engine for Hugo Website

Mon, 08 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to setup client side search engine for Hugo Website without any backend server or additional build steps required.

Factory Design Pattern In Java

Sun, 07 Jun 2020 00:00:00 +0000

Factory Design Pattern is one of the most commonly used design patterns. It falls under the category of Creational Design Patterns.

console.table() in JavaScript

Sat, 06 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how we can display data in tabular format in console using console.table() advance logging method. This comes in very handy to visualize complex array and objects in JavaScript.

Add Social Icons in Hugo Website Pages

Thu, 04 Jun 2020 00:00:00 +0000

If you are using Hugo as a static site generator tool then you can create a partial to show social icons like facebook, twitter, linkedin, whatsapp etc to share page links on social media.

Customize sitemap in Hugo Website

Thu, 04 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn how to disable or customize sitemap.xml for Hugo website.

How to Compare two Strings in Java

Thu, 04 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn different ways to compare two strings in Java

How to Iterate over a List in Java

Wed, 03 Jun 2020 00:00:00 +0000

In this tutorial, we’ll learn different ways to iterate over a list in Java.

Find Middle Element of Linked List in Java

Tue, 02 Jun 2020 00:00:00 +0000

In this article, we’ll learn how to find middle element of a linked list using multiple approach in Java.

Spring @ConfigurationProperties using YAML

Tue, 02 Jun 2020 00:00:00 +0000

In this article, we’ll learn how to use @ConfigurationProperties with .yml file instead of .properties file for configuration in Spring Boot Project.

Spring Initializr Plugin for Eclipse IDE

Sat, 30 May 2020 00:00:00 +0000

In this article, we’ll learn how to install Spring Tool Plugin for Eclipse IDE to create a Spring Boot Project from Scratch using Spring Initializr.

Spring @Controller and @RestController

Thu, 28 May 2020 00:00:00 +0000

In this quick article, we’ll see @Controller and @RestController annotations and their difference in Spring MVC.

Java Math.pow() method Usage

Wed, 27 May 2020 00:00:00 +0000

In this quick article, We’ll see usage of Java Math.pow() method which takes two arguments, a and b, and returns a to the power of b i.e. a^b

Java Regex to Validate Phone Number

Wed, 27 May 2020 00:00:00 +0000

In this article, we’ll learn how to validate mobile phone number of different country’s format using Java Regex (Regular Expressions)

Spring @Value Annotation Guide

Wed, 27 May 2020 00:00:00 +0000

In this article, we’ll learn how to inject values for Primitives, List, Map, and Date with inline values and from property file using @Value Annotation with examples. We’ll also see its usage with Constructor-based & Setter-based Injection, and SpEL.

Configure Feign Client in Spring Boot

Tue, 26 May 2020 00:00:00 +0000

In this article, we’ll learn how to configure a FeignClient in your Spring Boot project to consume RESTFul APIs from other services.

Java String.format() method Usage

Mon, 25 May 2020 00:00:00 +0000

This article demonstrate use of String.format() in Java with many examples…

Build RESTFul API with Spring Boot

Sun, 24 May 2020 00:00:00 +0000

In this article, we’ll learn to build RESTFul APIs in Spring Boot Web Application using layered architecture and test driven development approach.

Setup a Spring Boot Project using Spring Initializr

Sat, 23 May 2020 00:00:00 +0000

In this article, we’ll learn how to create a Spring Boot project quickly from scratch use Spring Initializer.

Blockchain Explained using JavaScript

Mon, 18 May 2020 00:00:00 +0000

In this article, we’ll learn how to implement Blockchain using Javascript.

Blockchain Explained

Fri, 15 May 2020 00:00:00 +0000

Most of us think Blockchain as the technology behind Bitcoin. While this was its original purpose, blockchain is capable of so much more…

Useful Hugo Shortcodes

Sat, 09 May 2020 00:00:00 +0000

If you are using Hugo as a static site generator tool then you might have used hugo built-in shortcodes but here are some amazing hugo shortcodes which can be used in markdown files of your hugo website.

Add Structure Data JSON-LD in Hugo Website Pages

Mon, 04 May 2020 00:00:00 +0000

When you add structure data to your website, it helps google, bing or other website indexers to understand the content for your website and pages which leads to better search results for your website and eventually helps in SEO ranking.

Double Colon (::) Operator in Java 8

Thu, 30 Apr 2020 00:00:00 +0000

The double colon :: operator is introduced in Java 8 for method reference. It is a shorthand syntax for lambda expression that executes one method. You can write more compact and readable code using double colon operator as compare to anonymous classes and lambda expression. We are going to understand its usage with lots of examples.

Configure embedded Jetty server in Spring Boot

Sat, 25 Apr 2020 00:00:00 +0000

In this quick tutorial, we’ll configure embedded Jetty server by replacing it with default Tomcat server in Spring Boot web application.

Custom API Request & Response Logging in spring boot.

Thu, 23 Apr 2020 00:00:00 +0000

When we create RESTFul APIs in spring boot application in microservices environment. It becomes essential to log incoming API request and response and push it to centralized logging system such as Splunk or ELK for debugging. Also all the logs related to one request should have some common id to relate them. In this post we are going to solve these problems.

info and health endpoints in spring boot

Mon, 20 Apr 2020 00:00:00 +0000

In spring boot microservices based application, where microservices talks to each other using RESTFul APIs. We can expose some important information about microservice such as name, version, description over some endpoints say /info and also realtime status or health over some endpoint say /health to create application dashboards, realtime alerts, track microservice updates and so on…

Pretty print JSON response in Spring Boot

Mon, 13 Apr 2020 00:00:00 +0000

In this quick article, we’ll learn how to pretty print JSON response in Spring Boot web application using Jackson property.

Configure Kafka Producer and Consumer in spring boot

Sat, 11 Apr 2020 00:00:00 +0000

This post describes how to configure Kafka producer and consumer in spring boot application and also explains how to create service classes to send and receive Kafka messages to and from configured kafka topic respectively.

Async/Await in JavaScript

Sun, 05 Apr 2020 00:00:00 +0000

Async functions and Await keyword are latest additions in JavaScript as part of ECMAScript 2017 release which introduced a new way of writing asynchronous functions. In this post we will talk about why we should use async/wait, its syntax and practical usage with example.

Promises in JavaScript

Fri, 03 Apr 2020 00:00:00 +0000

Promises are introduced natively in ES6. They are very similar to our promises. As we keep or break our promises, Javascript promises are also either resolve or reject. In this post we will talk about why we should use promises, promise syntax, promise states and its practical usage with examples using fetch API.

Tricky Javascript Interview Questions

Tue, 31 Mar 2020 00:00:00 +0000

This post is a collection of tricky interview questions based on different concepts in JavaScript. The difficulty level of question will increase as you read forward down the line in this post.

Difference in == and === comparison operators in JavaScript

Sat, 28 Mar 2020 00:00:00 +0000

This is frequently asked question in JavaScript interview. We can compare primitive types, array and object using two comparison operators == and === available in JavaScript. This post describes the difference between these two with many examples.

Understand all about this keyword in JavaScript

Thu, 26 Mar 2020 00:00:00 +0000

The this keyword in JavaScript is very important concept but at the same time very confusing to understand.

Classes in JavaScript

Wed, 25 Mar 2020 00:00:00 +0000

In this tutorial, we’ll learn how to create classes in JavaScript.

Understand call, bind and apply methods in JavaScript

Wed, 25 Mar 2020 00:00:00 +0000

This is frequently asked question in JavaScript interview. This post describes the Function prototype methods call(), apply() and bind() with their syntax, usage and practical examples.

Lexical Scope, Closures and Currying in JavaScript

Tue, 24 Mar 2020 00:00:00 +0000

This post describes the Lexical Scope, Closures and Currying Function in JavaScript and their relations with examples.

M power N Using Recursive function

Sun, 22 Mar 2020 00:00:00 +0000

This is one of the example of using recursive function in Java to find M power N

Print All String Combinations Using Recursive function

Sun, 22 Mar 2020 00:00:00 +0000

Print all the possible combinations of a given String using Recursive function in Java

Streams in Java 8

Sun, 22 Mar 2020 00:00:00 +0000

One of the major feature of Java 8 is addition of Stream. It also has introduced the functional programming in Java. We will discuss different stream operations available in Collection, Array, IntStream with examples. We will also discuss the difference between Intermediate and Terminal operations.

Decorator Design Pattern Using Java

Sat, 21 Mar 2020 00:00:00 +0000

Decorator design pattern is used to add a new feature on the existing object by wrapping it with a decorator class.

Difference in const and Object.freeze() in JavaScript

Fri, 20 Mar 2020 00:00:00 +0000

This post describes the best practices to define constants and configuration values in JavaScript using const and Object.freeze() and the difference between them.

Object methods in JavaScript

Thu, 19 Mar 2020 00:00:00 +0000

This post describes the usage of various Object methods like Object.create(), Object.assign(), Object.freeze(), Object.seal() and many more available in JavaScript with examples.

Difference between var, let and const

Tue, 17 Mar 2020 00:00:00 +0000

A nice feature addition in ES2015 (ES6) was the introduction of let and const keywords for variable declaration. You can use var, let and const keyword interchangeably for variable declaration though it makes a difference in terms of their scope, usage and hoisting. If you are not aware of these differences then please continue to read…

1 Light Bulb and 3 Switches Puzzle

Sun, 15 Mar 2020 00:00:00 +0000

The one light bulb and three switches puzzle has been asked several times in interviews to evaluate candidate’s analytical skills.

Fruit Basket Puzzle

Sun, 15 Mar 2020 00:00:00 +0000

The Fruit basket puzzle comes under basic puzzles being asked in the interview.

The Die Hard Water Jug Riddle (Solved)

Sun, 15 Mar 2020 00:00:00 +0000

This riddle is from famous Die Hard movie where Bruce Willis and Jackson have to diffuse a bomb by placing exactly 4 gallon water on a scale using 3 gallon and 5 gallon water jug.

2 Eggs and 100 Floors Problem (Solved)