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Full-text Search with Solr 1. Overview In this article, we’ll explore a fundamental concept in the Apache Solr search engine – full-text search. The Apache Solr is an open source framework, designed to deal with millions of documents. We’ll go through the core capabilities of it with examples using Java… Continue Reading full-text-search-with-solr
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Creational Design Patterns in Kotlin: Builder 1. Introduction In this quick article, we’ll see how to implement the Builder Design Pattern in Kotlin. 2. Builder Pattern The Builder pattern is the one that people often use but rarely create on their own. It’s great to handle the building of objects… Continue Reading kotlin-builder-pattern
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Drools Spring Integration 1. Introduction In this quick tutorial, we’re going to integrate Drools with Spring. If you’re just getting started with Drools, check out this intro article. 2. Maven Dependencies Let’s start by adding the following dependencies to our pom.xml file: <dependency> <groupId>org.drools</groupId> <artifactId>drools-core</artifactId> <version>7.0.0.Final</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-spring</artifactId>… Continue Reading drools-spring-integration
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Guide to java.util.GregorianCalendar 1. Introduction In this tutorial, we’re going to take a quick peek at the GregorianCalendar class. 2. GregorianCalendar GregorianCalendar is a concrete implementation of the abstract class java.util.Calendar. Not surprisingly, the Gregorian Calendar is the most widely used civil calendar in the world. 2.1. Getting an Instance There are two… Continue Reading java-gregorian-calendar
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Spring Batch using Partitioner 1. Overview In our previous introduction to Spring Batch, we introduced the framework as a batch-processing tool. We also explored the configuration details and the implementation for a single-threaded, single process job execution. To implement a job with some parallel processing, a range of options is… Continue Reading spring-batch-partitioner
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FreeMarker Common Operations 1. Introduction FreeMarker is a template engine, written in Java, and maintained by the Apache Foundation. We can use the FreeMarker Template Language, also known as FTL, to generate many text-based formats like web pages, email, or XML files. In this tutorial, we’ll see what we can… Continue Reading freemarker-operations
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Inline Functions in Kotlin 1. Overview In Kotlin, functions are first-class citizens, so we can pass functions around or return them just like other normal types. However, the representation of these functions at runtime sometimes may cause a few limitations or performance complications. In this tutorial, first we’re going to… Continue Reading kotlin-inline-functions
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How to Use if/else Logic in Java 8 Streams 1. Overview In this tutorial, we’re going to demonstrate how to implement if/else logic with Java 8 Streams. As part of the tutorial, we’ll create a simple algorithm to identify odd and even numbers. We can take a look at this article… Continue Reading java-8-streams-if-else-logic
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Example of Vertx and RxJava Integration 1. Overview RxJava is a popular library for creating asynchronous and event-based programs, it takes inspiration from the main ideas brought forward by the Reactive Extensions initiative. Vert.x, a project under Eclipse‘s umbrella, offers several components designed from the ground up to fully leverage… Continue Reading vertx-rx-java
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Baeldung Weekly Review 28 At the very beginning of 2014 I decided to track my reading habits and share the best stuff here, on Baeldung. 2014 has been quite the year, covering each week with a review. I’ve been doing a lot more reading to make sure I cover and… Continue Reading 2015-week-review-28
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