more and more
Merging Streams in Java 1. Overview In this quick article, we explain different ways of merging Java Streams – which is not a very intuitive operation. 2. Using Plain Java The JDK 8 Stream class has some useful static utility methods. Let’s take a closer look at the concat() method.… Continue Reading java-merge-streams
getdocs
Basic Introduction to JMX 1. Introduction The Java Management Extensions (JMX) framework was introduced in Java 1.5 and has found widespread acceptance in the Java developers community since its inception. It provides an easily configurable, scalable, reliable and more or less friendly infrastructure for managing Java application either locally or… Continue Reading java-management-extensions
getdocs
Rendering Exceptions in JSON with Spring 1. Introduction Happy-path REST is pretty well-understood, and Spring makes this easy to do in Java. But what about when things go wrong? In this tutorial, we’ll go over passing a Java exception as part of a JSON response using Spring. For a broader… Continue Reading spring-exceptions-json
getdocs
Guide to Resilience4j 1. Overview In this tutorial, we’ll talk about the Resilience4j library. The library helps with implementing resilient systems by managing fault tolerance for remote communications. The library is inspired by Hystrix but offers a much more convenient API and a number of other features like Rate Limiter (block too… Continue Reading resilience4j
getdocs
Model, ModelMap, and ModelView in Spring MVC 1. Overview In this article, we’ll look at the use of the core org.springframework.ui.Model, org.springframework.ui.ModelMap and org.springframework.web.servlet.ModelView provided by Spring MVC. 2. Maven Dependencies Let’s start with the spring-context dependency in our pom.xml file: <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.11.RELEASE</version> </dependency> The latest version of… Continue Reading spring-mvc-model-model-map-model-view
getdocs
Guide to Java 8 Comparator.comparing() 1. Overview Java 8 introduced several enhancements to the Comparator interface, including a handful of static functions that are of great utility when coming up with a sort order for collections. Java 8 lambdas can be leveraged effectively with the Comparator interface as well. A… Continue Reading java-8-comparator-comparing
getdocs
Java Session Timeout 1. Overview This tutorial will show how to set up session timeout in a Servlet based web application. 2. Global Session Timeout in the web.xml The timeout of all Http Sessions can be configured in the web.xml of the web application: <?xml version=”1.0″ encoding=”UTF-8″?> <web-app …> …… Continue Reading servlet-session-timeout
getdocs
Introduction to Spring Data Elasticsearch Algorithms Exception 1. Overview In this article we’ll explore the basics of Spring Data Elasticsearch in a code-focused, practical manner. We’ll show how to index, search, and query Elasticsearch in a Spring application using Spring Data – a Spring module for interaction with a popular… Continue Reading spring-data-elasticsearch-test
getdocs
Introduction to the Functional Web Framework in Spring 5 1. Introduction Spring WebFlux framework introduces a new functional web framework built using reactive principles. In this tutorial, we’ll learn how to work with this framework in practice. We’ll base this off of our existing tutorial Guide to Spring 5 WebFlux. In… Continue Reading spring-5-functional-web
getdocs
Java Web Weekly, Issue 149 1. Spring and Java ===== >> Introducing the Spring Cloud CLI Launcher [spring.io] Spring Cloud is definitely moving fast. Here’s a quick writeup covering a new CLI command that takes some of the work away by running the necessary supporting applications. >> Java Microservices: The… Continue Reading java-web-weekly-149
getdocs