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An Introduction to Spring Data Redis Reactive 1. Introduction In this tutorial, we’re going to learn how to configure and implement Redis operations using Spring Data’s ReactiveRedisTemplate. We’ll go over the basic usages of the ReactiveRedisTemplate like how to store and retrieve objects in Redis. And we’ll take a look at… Continue Reading spring-data-redis-reactive
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A Guide to Queries in Spring Data MongoDB 1. Overview This article will focus on building out different types of queries in Spring Data MongoDB. We’re going to be looking at querying documents with Query and Criteria classes, auto-generated query methods, JSON queries and QueryDSL. For the Maven setup, have… Continue Reading queries-in-spring-data-mongodb
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Join and Split Arrays and Collections in Java 1. Overview In this quick tutorial, we’ll learn how to join and to split Arrays and Collections in Java, making good use of the new stream support. 2. Join Two Arrays Let’s start by joining two Arrays together using Stream.concat: @Test public… Continue Reading java-join-and-split
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Introduction to ORMLite 1. Overview ORMLite is a lightweight ORM library for Java applications. It provides standard features of an ORM tool for the most common use cases, without the added complexity and overhead of other ORM frameworks. It’s main features are: defining entity classes by using Java annotations extensible… Continue Reading ormlite
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Generate a Secure Random Password in Java 1. Introduction In this tutorial, we’ll look at various methods we can use to generate a secure random password in Java. In our examples, we’ll be generating ten-character passwords, each with a minimum of two lower case characters, two uppercase characters, two digits,… Continue Reading java-generate-secure-password
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A Guide to Apache CXF with Spring 1. Overview This tutorial focuses on configuring and using the Apache CXF framework together with Spring – either with Java or XML configuration. It’s the second in a series on Apache CXF; the first one focused on the fundamentals of CXF as an… Continue Reading apache-cxf-with-spring
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Introduction to GraphQL 1. Overview GraphQL is a query language, created by Facebook with the purpose of building client applications based on intuitive and flexible syntax, for describing their data requirements and interactions. One of the primary challenges with traditional REST calls is the inability of the client to request… Continue Reading graphql
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Merge Sort in Java 1. Introduction In this tutorial, we’ll have a look at the Merge Sort algorithm and its implementation in Java. Merge sort is one of the most efficient sorting techniques and it’s based on the “divide and conquer” paradigm. 2. The Algorithm Merge sort is a “divide… Continue Reading java-merge-sort
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Initializing Arrays in Java 1. Overview In this quick tutorial, we’re going to see the different ways in which we can initialize an array and the subtle differences between these. 2. One Element at a Time Let’s start with a simple, loop-based method: for (int i = 0; i <… Continue Reading java-initialize-array
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Different Types of Flows in Mule 1. Introduction Mule is a Java-based product which provides an enterprise service bus (ESB) solutions. We can develop Mule applications using Anypoint Studio, an Eclipse plugin. After a brief introduction to ESB’s and flows, we’ll talk about the different types of flows in Mule, and… Continue Reading mule-esb-flows
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