When every company is a software company, and software companies need to test faster than ever, it's important to choose the right tool for the job.

For initial development, we are leveraging a JAX-RS based microservice-starter application similar to implementation using Oracle Helidon.

In this article, see how to integrate Jenkins with GitHub.

Following the model-driven paradigm, state machines are first modeled on an abstract level and in a second step transformed into source code.

Learn more about dksnap, which allows you to create and manage snapshots of Docker containers.

In this article, we discuss nine of the most common types of application testing and review code samples and tools for each in Java.

In this tutorial, we take a look at how you can create and migrate a basic Spring Boot application from JUnit 4 to the refreshed JUnit 5.

A closer look at SpringBoot and its role in performance.

In this article, I will talk about AGGREGATION design patterns developed for the need of transmitting data to the application layer.

In this article, we discuss how to develop a secure, scalable, messaging Java application with Kafka

In this post, look at Skaffold for automatic building and deploying our application to a Kubernetes cluster during development.

This article demonstrates how you can use Azure Databricks with Spark to create and collect logs and Docker.

It’s (finally) time to look at the API Server layer and expose the business service to the outside world.

In this article, you'll create and deploy an Angular app to AWS S3 from scratch in less than five minutes Prerequisites

I was working on a practical project using Angular 8, where I was creating a service and thinking more about how to implement SOLID principles. I decided to have an interface to define my service and a class to implement the logic. Everything was okay with that design, but a question came to my mind, "How can I implement dependency injection with my Angular component?" In this example, I am going to use an abstract class, Let's create an abstract class, named IGreetingsService. This will be used as an Interface with a greeting method. TypeScript x 1 export abstract class IGreetingsService { 2 constructor() { } 3 abstract greeting(): String; 4 } Now, let's create a class, GreetingsServiceImpl. This class implements the IGreetingsService abstract class. TypeScript xxxxxxxxxx 1 1 export class GreetingsServiceImpl implements IGreetingsService { 2 constructor() { } 3 greeting(): String{ 4 return "Pruebaa"; 5 }; 6 } At this point, we have a regular class to use as a service, but we need to add the annotation @Injectable. We have to put it at IGreetingsService. TypeScript x 10 1 @Injectable({ 2 providedIn: 'root', 3 useClass: GreetingsServiceImpl, 4 }) 5 export abstract class IGreetingsService { 6 7 constructor() { } 8 9 abstract greeting(): String; 10 } The magic is at the property useClass. This class is used by the Angular framework to know what concrete class has to use for dependency injection when you are using theIGreetingsService abstract class. So we are ready to use our service into an angular component. TypeScript xxxxxxxxxx 1 12 1 @Component({ 2 selector: 'my-app', 3 templateUrl: './app.component.html', 4 styleUrls: [ './app.component.css' ] 5 }) 6 export class AppComponent { 7 name: String; 8 constructor(private service: IGreetingsService ) { 9 this.name = this.service.greeting(); 10 } 11 12 } At the moment, to create an instance of the AppComponent, Angular automatically creates an instance of GreetingsServiceImpl , instead of IGreetingsService. (Remember IGreetingsService is an abstract class). This approach can help you in several situations; for example, think about a service using REST services to get some data, but now there is a new requirement, and you need to get the same data from session storage or local storage. You can create a new class implementing your abstract class and update the property useClass to refer to your new class. Another situation would be if you needed a different implementation on production environments and testing environments. You can find the complete source code here: https://stackblitz.com/edit/angular8-injectiondependency-interface. A final note, you can define a provider in the component definition annotation to inject a specific implementation of your service. TypeScript x 1 @Component({ 2 selector: 'my-app', 3 templateUrl: './app.component.html', 4 styleUrls: [ './app.component.css' ], 5 providers :[{ provide: IGreetingsService, useClass: GreetingsServiceImpl }] 6 }) Further Reading Angular: Everything You Need to Know [Tutorials]. About Dependency Injection.

Today, we are going to build a simple WordCount data pipeline using Apache Kafka for unbounded sources.

In this article, see how to test for lock table consistency and create shared file systems when deploying high availability for SAP ERP.

In this article, we discuss how to integrate dotenv with NestJs and TypeORM to get you up and going with your Node application configuration.

If your cloud costs are wearing you down, take a look at how you can integrate AWS Athena with you database for better cost usage insight.

In this article, look at a highlight of the top 7 programming languages to look out for for test automation in 2020.