End to End Technology Solutions
Swagger is a tool which is used to develop APIs, interact with APIs, document APIs and test APIs. The main application of swagger is to document and test the APIs. Now the question is why we need to document APIs? So when you develop an API, you need to provide some information(end-points, response codes, request-response Continue Reading »
Monolithic Application In a monolithic application, all modules are developed in a single code base. Modules are divided as per their technical and functional requirement. In a monolithic application, if we bring changes in any one of the modules then we need to redeploy the entire application with all modules. In the monolithic application, we Continue Reading »
Introduction Today, many business owners have understood the importance of doing business over the web. They have realized the benefits of having an online presence. And, that is the reason why ‘E-commerce, Brick and Click’ kind of businesses are growing exponentially. People, today, are paying developers more than ever to have a website or mobile Continue Reading »
Sometimes we have to configure property files from outside of classpath so that anyone can access this file without looking into application. Spring boot provides many ways to configure this but most of them are used only if we read the property file from classpath if we are going to read from file system then Continue Reading »
This blog is about to integration of Line Messaging API with spring boot. I will tell you how Line Messaging API will communicate to spring boot application. What is Line Messaging API? The Line Messaging API is to establish communication between Line ChatBot and your server. If you want to create a chatbot where line Continue Reading »
Spring Framework introduced @Controller and @RestController annotations to create a controller. Basically, the controller is used to handling the client requests for a particular resource. For example mydomain.com/home This request goes to dispatcher servlet then it will be forwarded to controller corresponding methods with that URL mapping If you create your controller using @Controller annotation Continue Reading »
When you create a class, you may create an object for that particular class and once we execute/terminate the program, the object is destroyed by itself (Garbage Collector thread). What happens if you want to call that class without re-creating the object. In those cases what you do is that, we use the serialization concept Continue Reading »
Stream concept is introduced in java 1.8 and present in java.util.stream package.It is used to process the object from collection or any group of objects or data source. We can easily understand java stream concept by it’s name stream, In stream water flows from one water source to destination and we can perform some operations Continue Reading »
1. Lets list things we need to discuss:- Set our goal clear. Understand value of feature for End-User. Keep a track of all the test scenarios and new findings. After testing check have we covered all the checkpoints. UI checkpoints. Last but not least, give app/web_app to another tester who is not a part for Continue Reading »
Hibernate mappings are one of the key features of Hibernate. They establish the relationship between two database tables as attributes in your model. That allows you to easily navigate the associations in your model and Criteria queries. You can establish either unidirectional or bidirectional i.e you can either model them as an attribute on only one Continue Reading »
Ehcache is an open-source, standards-based cache for boosting performance, simplifying scalability and offloading your database. EhCache is used to improve performance by reducing the load on underlying resources. It can also be used for RESTful server caching, application persistence, and distributed caching. In simple words, cache means a store of things that will be required Continue Reading »
Spring Security provides comprehensive security services for J2EE – based enterprise software applications. It is powerful, flexible and pluggable. It is not Proxy server, firewall, OS level Security, Intrusion Detection System, and JVM Security. OAuth is open authorization protocol, which allows accessing resources of the resource owner by enabling the client applications on HTTP Continue Reading »
What is Spring Boot? What is Spring Framework? What are their goals? How can we compare them? There must be a lot of question in your mind. We will discuss each and every question here. At the end of blog you will get to know about all these questions. There is one interesting fact that Continue Reading »
Amazon S3 (Simple Storage Service) is a storage service provided by AWS (Amazon Web Services). We can use S3 to store and retrieve any amount of data on the web world-wide. To know more about this service, you can refer to the official documentation of AWS S3 from here. This tutorial will show you, how Continue Reading »
In this tutorial, we will discuss about how to integrate mongoDB with java client. 1. What is MongoDB ? MongoDB is a very popular NoSql open source database. It works on collection rather than table and document rather than row and column that provides, high performance, high availability, and easy scalability. Sample document : { Continue Reading »
AOP framework is one of the key components of the Spring framework. AOP provides a facility to enable middleware services with the Spring application in a loosely coupled manner. Middleware services are the additional services that makes our application to be executed in a stable manner in all the situations. Middleware services can be Continue Reading »
Spring Data JPA is not a JPA provider but is a specification. It is a library / framework that adds an extra layer of abstraction on the top of our JPA provider. It simply “hides” the Java Persistence API (and the JPA provider) behind its repository abstraction. JPA is the sun specification for persisting Continue Reading »
JasperReports is an open source reporting engine. It provides ability to deliver rich content onto to the printer, the screen, or into various formats such as PDF, HTML, XLS, RTF, ODT, CSV, TXT and XML files. It is a Java library and can be used in a variety of Java-enabled applications to generate dynamic content. Continue Reading »
Why we use Log4j ? Log4j is used for logging. Logging is the process of writing log message in any file, db,console etc( any central place). If we use SOP (System.out.print() ) statement to print the log message then we can have some disadvantage : 1. We can print log message on console only. So Continue Reading »