Code Katha

Introduction- We will learn here Spring Data JPA, perform CRUD operation, Clear concept of Relationship mapping like one-to-many, many-to-one with Example. Spring Data JPA is a powerful framework that simplifies the process of working with relational databases in Java applications. It provides an easy-to-use API for working with JPA, allowing developers to focus on their business logic instead of worrying about the details of how JPA works. With Spring Data JPA, you can easily define entities that map to database tables, and then use them to perform CRUD (create, read, update, delete) operations on those tables. In addition, Spring Data JPA provides support for more advanced features like querying and pagination, making it an excellent choice for both small and large projects. Contents [ hide ] In this blog, we will explore Spring Data JPA by building a sample application that uses it to manage users and packs. Setup Before we get

Introduction- In this tutorial blog, we will explore the process of setting up and utilising Visual Studio Code for Java programming, as well as incorporating GitHub Copilot as a valuable coding tool. Visual Studio Code is a powerful and versatile code editor that offers a wide range of features and extensions for Java developers. By using Visual Studio Code for Java programming, developers can benefit from features such as code completion, debugging, and live coding. Additionally, with the integration of GitHub Copilot, developers can streamline their coding process with AI-assisted suggestions for code snippets and functions. This blog will provide a comprehensive guide for setting up and using these tools for Java development. Contents [ hide ] Setup Visual Studio Code for Java and Spring Visual Studio Code (VS Code) is an open-source code editor that supports a wide range of programming languages, including Java. It is a powerful tool

Introduction- In this blog, we will learned how to use Elasticsearch with Spring Boot to build a search application. We will created several classes as an example, including ElasticsearchConfig, Book, BookService, BookController, and BookRepository, to demonstrate how to use Elasticsearch with Spring Boot. After this tutorial, you can start building your own search application using Elasticsearch and Spring Boot. Elasticsearch is a powerful search and analytics engine that can be used to build highly scalable and fault-tolerant applications. In this blog, we will learn how to use Elasticsearch with Spring Boot to build a search application. First we will Set up a Spring Boot project with Elasticsearch after that we will see how to make connection with elasticsearch. Once connection setupt is done then we will add data then perform queries and searching on Elasticsearch. Contents [ hide ] Setting up a Spring Boot project with Elas

Introduction- Kafka is an open-source distributed event streaming platform that allows you to publish and subscribe to streams of records. In this tutorial, we'll cover how to use Java with Kafka to send and receive messages. First we will learn how to download and install Kafka in different operating systems, then we will write code in Java (Spring Boot framework) for producer and consumer.  One of the core concepts in Kafka is the idea of a stream, which is a continuous flow of records. These records can be anything - log entries, sensor readings, user events, etc. - and are published by producers to one or more Kafka topics. Consumers can then subscribe to those topics and consume the records in real-time. To get started with Kafka, you first need to download and install it on your machine. Kafka is available for different operating systems, including Windows, macOS, and Linux. Once you have Kafka installed, yo