@ConfigurationProperties annotation is used to bind all the properties in a properties file to a Java class. You can then use an object of the Java class annotated with ConfigurationProperties annotation to access configuration properties defined in a properties file. Earlier I shared with you a tutorial on how to read application properties in Spring Boot RESTful…
Read More Spring Boot @ConfigurationProperties TutorialIn this tutorial, you will learn how to use Spring Boot Profiles. You can use Spring Boot Profile functionality when providing application configuration for a specific environment. For example, when your application runs in a development environment, then your application will use a specific for that environment application.properties file. And when you are ready to…
Read More Spring Boot Profiles TutorialThis tutorial will teach you how to build a Maven-based Spring Boot project and skip Unit tests. Sometimes, when working on a project, we need to build and run it even though our Unit test is failing. When there is a flailing Unit test, the Maven package and install commands will also fail. This is because…
Read More How to Skip Unit Tests in MavenIn this Android tutorial you will learn how to pass data between Android Activities. You will learn how to pass data forward from activity A to activity B and also how to return result from activity B to activity A. Let’s get started. Pass Data From One Android Activity to Another (Forward) To pass data…
Read More Pass Data Between Android ActivitiesIn this short Android tutorial I am going to share with you how to start a new Activity when Button is clicked. To be able to follow this tutorial you will need to have an Android project created. I have created a very simple project with one MainActivity. Add Button to Main Activity To add…
Read More How to Start New Activity on Button ClickIn this tutorial, you will learn how to use @Email and@Validated annotations to validate an email address in the Spring Boot application. The value of the email address we will read from an HTTP GET request. If you are looking for an example of validating the email address sent in the HTTP POST request, please…
Read More Validate Email Address in Spring BootIn this tutorial, I am going to share with you how to allow access to your Microservice from an IP address of Zuul API Gateway only. For a step by step series of video lessons, please check this page: Spring Boot Microservices and Spring Cloud. In my previous tutorial, I have shared with you how…
Read More Allow Only IP Address of Zuul API GatewayIn this tutorial, you will learn how to create and run your own Zuul API Gateway and how to register with it more than one Spring Boot Microservice. To be able to follow this tutorial you need to know how to create simple RESTful Web Services with Spring Boot. If you need to review that,…
Read More Zuul API Gateway TutorialIn this tutorial, you will learn how to start up your own Spring Cloud API Gateway and how to make it route HTTP Requests sent to a registered with Eureka Discovery Server Microservice. I will also show you how to register more than one Spring Boot Microservice with Eureka and how to configure your Spring…
Read More Spring Cloud API Gateway TutorialIn this tutorial, you will learn how to create a Web Service or a Microservice and how to make it register with Eureka Discovery Server. For a step-by-step series of video lessons, please check this page: Spring Boot Microservices and Spring Cloud. Start Eureka Discovery Server To be able to follow this tutorial, you will…
Read More Register Microservice(Eureka Client) with Eureka ServerIn this tutorial, you will learn how to startup your own Eureka Discovery Server, so that the Microservices you build can register with this server and become discoverable by other Microservices. To learn how to setup Eureka Cluster, read the Eureka Server Cluster Setup tutorial. For a step by step series of video lessons, please…
Read More Eureka Discovery Server TutorialSpring Boot has a nice feature that enables the application to automatically restart when you change your Java code. This automatic restart of your application is often called Hot Swap. Spring Boot Dev Tools Dependency To enable your Spring Boot application to automatically restart when you make a change to your Java code, add the…
Read More Spring Boot Hot Swap or Automatic RestartThis tutorial will teach you how to use constructor-based dependency injection(DI) in Spring Framework when building RESTful Web Services. Read the following tutorial to learn about the different types of dependency injection in Spring and which one may be better suited for your specific use case. Constructor-Based Dependency Injection Overview Constructor-based dependency injection is a…
Read More Spring Constructor-Based InjectionIn this tutorial, you will learn how to use the @Autowired and @Qualifier annotations to inject a specific instance of a Bean. Sometimes you might have more than one implementation of an interface. If you do not explicitly specify which one you would like to inject, you will get a NoUniqueBeanDefinitionException when starting your application. Let’s…
Read More How to Use @Autowired and @Qualifier in SpringIn this short Spring Boot tutorial, you will learn how to pass command-line arguments to your Spring Boot application. Passing Command-Line Arguments To pass command line arguments to your Spring Boot app when running it with Maven use the -Dspring-boot.run.arguments. In the below code example, I will pass two command-line arguments: firstName and lastName. mvn spring-boot:run…
Read More Pass Command-Line Arguments to Spring Boot Application