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Spring Framework Introduction The Spring Framework started as a Dependency-Injection container and grew into a full, rich and mature ecosystem. If you’re just starting out with Spring – here’s where you go get started: The Basics of Spring + Intro to Building an Application with Spring Boot + Spring Core… Continue Reading spring-intro
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Spring WebClient vs. RestTemplate 1. Introduction In this tutorial, we’re going to compare two of Spring’s web client implementations – RestTemplate and new Spring 5’s reactive alternative WebClient. 2. Blocking vs. Non-Blocking Client It’s a common requirement in web applications to make HTTP calls to other services. Therefore, we need… Continue Reading spring-webclient-resttemplate
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Intro to Jedis – the Java Redis Client Library 1. Overview This article is an introduction to Jedis, a client library in Java for Redis – the popular in-memory data structure store that can persist on disk as well. It is driven by a keystore-based data structure to persist data… Continue Reading jedis-java-redis-client-library
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Spring Boot: Configuring a Main Class 1. Overview This quick tutorial provides different ways of defining an entry point into a Spring Boot application via Maven and Gradle. A Spring Boot application’s main class is a class that contains a public static void main() method that starts up the Spring… Continue Reading spring-boot-main-class
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Java Web Weekly 39 At the very beginning of last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since. Here we go… 1. Spring and Java ===== >> JEP 269: Convenience Factory Methods for Collections [java.net] Quick and… Continue Reading 2015-week-review-39
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Increment Date in Java 1. Overview In this tutorial, we’ll look at ways to increment date by one day using Java. Before Java 8, the standard Java date and time libraries weren’t very user-friendly. Hence, Joda-Time became the de facto standard date and time library for Java prior to Java 8.… Continue Reading java-increment-date
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An Overview of Regular Expressions Performance in Java 1. Overview In this quick tutorial, we’ll show how the pattern-matching engine works. We’ll also present different ways to optimize regular expressions in Java. For an introduction to the use of regular expressions, please refer to this article here. 2. The Pattern-Matching Engine… Continue Reading java-regex-performance
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Generate a Random Alphanumeric String in Kotlin 1. Overview In this tutorial, we’ll discuss how to generate a random alphanumeric String in Kotlin using three different approaches: Java Random, Kotlin Random, and Apache Commons Lang RandomStringUtils. Then, we’ll wrap up with a look at a high-performance approach. 2. Dependencies Before… Continue Reading kotlin-random-alphanumeric-string
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Making a JSON POST Request With HttpURLConnection 1. Overview In this tutorial, we’ll demonstrate how to make a JSON POST request using HttpURLConnection. 2. Building a JSON POST Request with HttpURLConnection ==== 2.1. Create A URL Object Let’s create a URL object with the target URI string that accepts the… Continue Reading httpurlconnection-post
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Thymeleaf lists Utility Object 1. Overview Thymeleaf is a Java template engine for processing and creating HTML. In this quick tutorial, we’ll look into Thymeleaf’s lists utility object to perform common list-based operations. 2. Computing Size First, the size method returns the length of a list. We can include it, say,… Continue Reading thymeleaf-lists-utility
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