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Introduction to Java 9 StackWalking API
1. Introduction In this quick article, we will have a look at Java 9’s StackWalking API. The new functionality provides access to a Stream of StackFrames, allowing us to easily browse stack in both...
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Java Money and Currency API
1. Overview JSR 354 – “Currency and Money” addresses the standardization of currencies and monetary amounts in Java. Its goal is to add a flexible and extensible API to the Java ecosystem, and make...
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Concurrent Test Execution in Spring 5
1. Introduction Starting with JUnit 4, tests can be run in parallel to gain speed for larger suites. The problem was concurrent test execution was not fully supported by the Spring TestContext...
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A Guide to the Axon Framework
1. Overview In this article, we’ll be looking at the Axon framework and how it helps us implement an architecture based on CQRS (Command Query Responsibility Segregation) and potentially Event...
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Spring Security and OpenID Connect
1. Overview In this quick tutorial, we’ll focus on setting up OpenID Connect with a Spring Security OAuth2 implementation. OpenID Connect is a simple identity layer built on top of the OAuth 2.0...
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Ant Colony Optimization
1. Introduction The aim of this series is to explain the idea of genetic algorithms and show the most known implementations. In this tutorial, we’ll describe the concept of the ant colony optimization...
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Introduction to Twitter4J
1. Overview In this article, we will have a look at using Twitter4J in a Java application to communicate with Twitter. 2. Twitter4J Twitter4J is an open source Java library, which provides a...
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Guide to @Immutable Annotation in Hibernate
1. Overview In this article, we’ll talk about how we can make an entity, collection or attribute Immutable in Hibernate. By default, fields are mutable, which means we’re able to perform operations on...
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Spring LDAP Overview
1. Overview LDAP directory servers are read-optimized hierarchical data stores. Typically, they’re used for storing user-related information required for user authentication and authorization. In this...
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Java 9 CompletableFuture API Improvements
1. Introduction Java 9 comes with some changes to the CompletableFuture class. Such changes were introduced as part of JEP 266 in order to address common complaints and suggestions since its...
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[NEWS] AssertJ 3.6.X – Interview with Joel Costigliola
1. Introduction AssertJ is a library that provides fluent assertions for Java. You can read more about it here and here. Recently, the 3.6.0 version was released along with two small bug-fix releases...
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A Guide to Redis with Redisson
1. Overview Redisson is a Redis client for Java. In this article, we will explore some of its features, and demonstrate how it could facilitate building distributed business applications. Redisson...
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Guide to Google Guice
1. Introduction This article will examine the fundamentals of Google Guice. We’ll look at approaches to completing basic Dependency Injection (DI) tasks in Guice. We will also compare and contrast the...
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Multiple Entry Points in Spring Security
1. Overview In this quick tutorial, we’re going to take a look at how to define multiple entry points in a Spring Security application. This mainly entails defining multiple http blocks in an XML...
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A Guide to the Java API for WebSocket
1. Overview WebSocket provides an alternative to the limitation of efficient communication between the server and the web browser by providing bi-directional, full-duplex, real-time client/server...
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Overview of Spring-Boot Dev Tools
1. Introduction Spring Boot gives us the ability to quickly setup and run services. To enhance the development experience further, Spring released the spring-boot-devtools tool – as part of Spring...
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Introduction to Google Protocol Buffer
1. Overview In this article, we’ll be looking at the Google Protocol Buffer (protobuf) – a well-known language-agnostic binary data format. We can define a file with a protocol and next, using that...
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Introduction to Javatuples
1. Overview A tuple is a collection of several elements that may or may not be related to each other. In other words, tuples can be considered anonymous objects. For example, [“RAM”, 16, “Astra”] is a...
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Introduction to Javassist
1. Overview In this article, we will be looking at the Javasisst (Java Programming Assistant) library. Simply put, this library makes the process of manipulating Java bytecode simpler by using a...
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Java Web Weekly, Issue 168
Lots of interesting writeups on Java 9 this week. Here we go… 1. Spring and Java >> Troubleshooting Memory Issues in Java Applications [infoq.com] Fixing memory issues can be challenging. This...
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