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Java CompletableFuture Example

Bipartite Graph

1. Introduction In this post, we feature a comprehensive article on Java CompletableFuture. Asynchronous operations are common in Java applications. There are lots of challenges when dealing with asynchronous operations, such as memory leaking, race condition, callback hell, disjointed error handling, etc. Java has provided the CompletableFuture<T> class to ease these challenges since version 8. It has about 50 methods ...

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How to Install Docker on Ubuntu

With this example, we are going to demonstrate how to install Docker on Ubuntu. 1. What is Docker? Docker is a platform used to develop, deploy, and run applications by using containers. Docker consists of: Docker Engine – lightweight and powerful open source containerization technology combined with a workflow for building and containerizing your applications.Docker Hub – SaaS (Software as a Service) service for sharing ...

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Spring Boot JAX-RS with Jersey Example

In this post, we feature a comprehensive article on Spring Boot JAX-RS with Jersey. We will show how to create a JAX-RS web service with Spring Boot and Jersey. 1. Introduction REST (Representational State Transfer) is an architectural pattern for developing web services. REST is a popular choice for web services development projects since it is lightweight, stateless, and therefore easily ...

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Spring Boot Unit Testing Example

1. Introduction This is an in-depth article related to the Spring Boot Unit Testing. Spring Boot framework has features to build applications. Spring Boot has features related to unit testing the application. The framework has utilities and annotations to perform unit testing. Modules for the Test support are spring-boot-test and spring-boot-test-autoconfigure  which supports auto-configuration for tests. 2. Spring Boot Unit Testing ...

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Java Quartz Logging Example

1. Introduction In this article, we will explore Java Quartz Logging application using two of the most widely used logging frameworks, Logback and Log4j. Quartz is a very popular open source job scheduling library that can be used in Java applications. The main concept of Quartz is that a scheduler holds a list of jobs that are triggered at specific times or repeatedly. 2. Project Setup ...

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Spring Cloud Configuration Example

Welcome readers, in this tutorial, we will explore cloud configuration with spring boot application. 1. Introduction Spring Boot is a module that provides rapid application development feature to the spring framework including auto-configuration, standalone-code, and production-ready code It creates applications that are packaged as jar and are directly started using embedded servlet container (such as Tomcat, Jetty or Undertow). Thus, ...

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Spring MVC Functional Programming Example

1. Spring MVC Functional Programming – Introduction In this post, we feature a comprehensive article on Spring MVC Functional Programming. With the advent of Java 8, there were drastic changes in the way Java programming was done. Java 8 brought into picture functional interfaces. Functional interfaces are Java interfaces containing one and only one abstract method. The functional interfaces became ...

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How Java Servlet Works

1. Introduction In this article, we are going to look at a java servlet tutorial. “As opposed to what another language?” I hear you say and rightly so. Yes, servlets are a Java construct, but when compared with other languages they can easily be compared to those languages’ web component implementations. For the purposes of this article though, we will ...

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Docker Install on CentOS Example

With this example, we are going to demonstrate how to install the Docker on CentOS? Table Of Contents1. What is Docker?2. What is CentOS?3. Steps for Installation of Docker on CentOS4. Installation of CentOS4.1 What is a Virtual Machine? 4.2 What is Oracle VM Virtual Box?4.3 Installation of Oracle VM Virtual Box4.4 Download CentOS4.5 Create a New Virtual Machine4.6 Install ...

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Java Quartz with MySQL Example

1. Introduction In this article, we will go through the configuration needed to setup MySQL, the most famous open source database, with Quartz, a very popular open source job scheduling library that can be used in Java applications. The main concept of Quartz is that a scheduler holds a list of jobs that are triggered at specific times or repeatedly. In the code examples we will ...

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