The singleton design pattern restricts a class to having only one instance and provides a global point of access to that single instance. To learn more about the singleton pattern, please refer to Singleton design pattern and Singleton class in Java. In this tutorial, we are going to learn how we can break Singleton pattern in… Read More »
The singleton design pattern restricts a class to having only one single instance and provides a global point of access to that single instance. In other words, A singleton class must return the same instance no matter how many times an application requests it. i.e., the same single instance should be used by all the… Read More »
In Enterprise applications, we may be required to have multiple databases for storing different kinds of information. For example, in an e-commerce application, it may be required to keep the user’s information in a different database, product-related information in a different database, and payment-related information in a separate database. In this tutorial, we will configure… Read More »
Spring Boot Profile Spring profile is a feature of the Spring framework that allows us to map a part of our application or the complete application to different profiles. i.e., environments (dev, uat or prod). Any @Component or the @Configurations of an application can be marked with the @Profile annotation to limit its scope to… Read More »
In Jenkins, a pipeline is a workflow with a group of events or jobs that are linked to each other in a sequence. The Jenkins pipeline is a process of continuous delivery automation using Jenkins jobs (items). In the Jenkins pipeline, each job contains some processing inlets and outlets. For example, Build->Deploy->Test->Release are the different… Read More »
JAR stands for Java ARchive. The jar file represents a group of .class files. It is a file format that is based on the ZIP format. It is used to archive .class files, audio files, image files, and directories into a single jar file, which is further used to distribute the application or libraries over… Read More »
A string is an object in Java that represents a sequence of character values. Strings are immutable, which means once they are created, we cannot change their value. It is recommended to use the char[] array for storing passwords over strings in Java because of following reasons: 1. Strings are immutable In Java, the memory… Read More »
JSON stands for JavaScript Object Notation; it is a lightweight, open standard for data interchange over the internet. It uses Key-Value pairs along with objects and arrays and is language-independent, which means we can have two different applications written in different languages exchange data with the help of JSON. In this tutorial, we are going… Read More »
Jenkins is an open-source DevOps tool used for continuous integration and deployment via automation of the build, test, and deployment processes across different environments (DEV, SIT, UAT and PROD). Jenkins comes with a built-in feature to get notified once our CI/CD build gets completed. For this, we need to configure email notification in Jenkins server.… Read More »
The integration of Jenkins with GitHub comes with the default plugins that come with the Jenkins installation, namely, the Git plugin and the GitHub plugin. These plugins provide the following features to Jenkins: Step to integrate Jenkins with GitHub for Continuous Integration Step 1- Create a Spring Boot Project First, we will create a simple… Read More »