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XML-Based Injection in Spring

1. Introduction In this basic tutorial, we’ll learn how to do simple XML-based bean configuration with the Spring Framework. 2. Overview Let’s start by adding Spring’s library dependency in the...

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Java Weekly, Issue 202

Here we go… 1. Spring and Java >> New Version Scheme for Java SE Platform and the JDK [infoq.com] The details of the next version scheme for Java. >> How to Implement Conditional Auditing...

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An Overview of Identifiers in Hibernate

1. Introduction Identifiers in Hibernate represent the primary key of an entity. This implies the values are unique so that they can identify a specific entity, that they aren’t null and that they...

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Quick Guide to Java Stack

1. Overview In this article, we’ll introduce the java.util.Stack class and start looking at how we can make use of it.  The Stack is a generic data structure which represents a LIFO (last in, first...

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Generating Prime Numbers in Java

1. Introduction In this tutorial, we’ll show various ways in which we can generate prime numbers using Java. If you’re looking to check if a number is prime – here’s a quick guide on how to do that....

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Creating a Java Compiler Plugin

1. Overview Java 8 provides an API for creating Javac plugins. Unfortunately, it’s hard to find good documentation for it. In this article, we’re going to show the whole process of creating a compiler...

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Introduction to Spring REST Shell

1. Overview In this article, we’ll have a look at Spring REST Shell and some of its features. It’s a Spring Shell extension so we recommend reading about it first. 2. Introduction The Spring REST...

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Deploy Application at Tomcat Root

1. Overview In this quick article, we’ll discuss deploying a web application at the root of a Tomcat. 2. Tomcat Deployment Basics and Terminology First, the basics of deploying an application to...

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JMX Data to the Elastic Stack (ELK)

1. Overview In this quick tutorial, we’re going to have a look at how to send JMX data from our Tomcat server to the Elastic Stack (formerly known as ELK). We’ll discuss how to configure Logstash to...

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REST API Testing with Karate

1. Overview In this article, we’ll introduce Karate, a Behavior Driven Development (BDD) testing framework for Java. 2. Karate and BDD Karate is built on top of Cucumber, another BDD testing...

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Java Weekly, Issue 203

Here we go… 1. Spring and Java >> Elegant delegates in Kotlin [blog.codecentric.de] Kotlin has many powerful features that should be used with extra care – and delegation is one of them....

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The Java continue and break Keywords

1. Overview In this quick article, we’ll introduce continue and break Java keywords and focus on how to use them in practice. Simply put, execution of these statements causes branching of the current...

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Lazy Verification with Mockito 2

1. Introduction In this short tutorial, we’ll look at lazy verifications in Mockito 2. Instead of failing-fast, Mockito allows us to see all results collected and reported at the end of a test. 2....

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An Example of Backward Chaining in Drools

1. Overview In this article, we’ll see how what Backward Chaining is and how we can use it with Drools. This article is a part of a series showcasing the Drools Business Rules Engine. 2. Maven...

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Introduction to Spring Cloud Stream

1. Overview Spring Cloud Stream is a framework built on top of Spring Boot and Spring Integration that helps in creating event-driven or message-driven microservices. In this article, we’ll introduce...

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A Guide to Google-Http-Client

1. Overview In this article, we’ll have a look at the Google HTTP Client Library for Java, which is a fast, well-abstracted library for accessing any resources via the HTTP connection protocol. The...

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Spring Security 5 for Reactive Applications

1. Introduction In this article, we’ll explore new features of the Spring Security 5 framework for securing reactive applications. This release is aligned with Spring 5 and Spring Boot 2. In this...

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Guide to Java String Pool

1. Overview The String object is the most used class in the Java language. In this quick article, we’ll explore the Java String Pool — the special memory region where Strings are stored by the JVM. 2....

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A Guide to Spring AbstractRoutingDatasource

1. Overview In this quick article, we’ll look at Spring’s AbstractRoutingDatasource as a way of dynamically determining the actual DataSource based on the current context. As a result, we’ll see that...

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Introduction to Spring Cloud CLI

1. Introduction In this article, we take a look at Spring Boot Cloud CLI (or Cloud CLI for short). The tool provides a set of command line enhancements to the Spring Boot CLI that helps in further...

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