Latest Versions of TechStack table, th, td { border:1px solid black; } Software Used Version(s) Current Java 8,13 Java SE 17 (LTS) Spring boot 2.3.12 2.6.3 Angular NA 13.1.1 Android studio NA 4.1 Lombok v1.17 v1.18.22 Log4j 2 2.17.1 2.17.1 Oracle 12 19c Springfox swagger 2.9.2 3.0.0 Resiliance...

 Apache Kafka : an open-source message broker project developed by the Apache Software Foundation written in Scala and is a distributed publish-subscribe messaging system.Features of kafka High Throughput : Support for millions of messages with modest hardwareScalability : Highly scalable distributed systems with no downtimeReplication : Messages are replicated across the cluster to provide support for multiple subscribers and balances the consumers in case of failuresDurability Provides...

 New Features in Java 13We initially saw switch expressions in JDK 12 itself, build on the previous version by adding a new yield statement.Text Blocks - To embed JSON , XML etc to avoid escaping in the strings.Class data sharing (CDS) ZGC: Uncommit Unused Memory Reimplement the Legacy Socket API&nbs...

GIT- Basics & Eclipse Usage This post aim at very basic usage of using GIT based tools and eclipse configurations for the same.  create a new repository : create a new directory, open it and perform a git init to create a new git repository. checkout a repository : Create a working copy of a local repository by running the command  git clone /path/to/repository  when using a remote server, your command will be git clone username@host:/path/to/repository Goto...

Static keyword in java The static keyword in java is used for memory management in JAVA. Static keywords belong to the class rather than the instance/object of a class. We can use static keywords with: Variable Method Block Class 1. Static variable in Java You can declare a static variable by simply use of static keyword with a variable.  Static variables are also known as a class variable because they are associated with the class...

Spring is well-organized architecture consisting  of seven modules. Modules in the Spring framework are:

Spring AOP
One of the key components of Spring is the AOP framework. AOP is used in Spring:

To provide declarative enterprise services, especially as a replacement for EJB declarative services. The most important such service is declarative transaction management, which builds on Spring’s transaction abstraction.
To allow users to implement custom aspects, complementing their use of OOP with AOP
Spring ORM
The ORM package is related to the database access. It provides integration layers for popular object-relational mapping APIs, including JDO, Hibernate and iBatis.

Spring Web
The Spring Web module is part of Spring?s web application development stack, which includes Spring MVC.

Spring DAO
The DAO (Data Access Object) support in Spring is primarily for standardizing the data access work using the technologies like JDBC, Hibernate or JDO.

Spring Context
This package builds on the beans package to add support for message sources and for the Observer design pattern, and the ability for application objects to obtain resources using a consistent API.

Spring Web MVC
This is the Module which provides the MVC implementations for the web applications.

Spring Core
The Core package is the most import component of the Spring Framework.
This component provides the Dependency Injection features. The BeanFactory  provides a factory pattern which separates the dependencies like initialization, creation and access of the objects from your actual program logic.