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Guide to Spring Type Conversions 1. Introduction In this article, we’ll have a look at Spring’s type conversions. Spring provides out-of-the-box various converters for built-in types; this means converting to/from basic types like String, Integer, Boolean and a number of other types. Apart from this, Spring also provides a solid… Continue Reading spring-type-conversions
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Java Base64 Encoding and Decoding 1. Overview In this tutorial, we’re going to explore the various utilities that provide Base64 encoding and decoding functionality in Java. We’re mainly going to illustrate the new Java 8 APIs as well as the utility APIs coming out of Apache Commons. Further reading: Guide… Continue Reading java-base64-encode-and-decode
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Spring with Maven BOM 1. Overview In this quick tutorial, we’re going to look at how Maven, a tool based on the concept of Project Object Model (POM), can make use of a BOM or “Bill Of Materials”. For more details about Maven, you can check our article Apache Maven… Continue Reading spring-maven-bom
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Java Naming and Directory Interface Overview 1. Introduction The Java Naming and Directory Interface (JNDI) provides consistent use of naming and/or directory services as a Java API. This interface can be used for binding objects, looking up or querying objects, as well as detecting changes on the same objects. While… Continue Reading jndi
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R2DBC – Reactive Relational Database Connectivity Persistence Spring 1. Overview In this tutorial, we’ll show how we can use R2DBC to perform database operations in a reactive way. In order to explore R2DBC, we’ll create a simple Spring WebFlux REST application that implements CRUD operations for a single entity, using… Continue Reading r2dbc-operations
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Reflection with Kotlin 1. Introduction Reflection is the name for the ability to inspect, load and interact with classes, fields, and methods at runtime. We can do this even when we don’t know what they are at compile time. This has a large number of uses, depending on what we… Continue Reading kotlin-reflection
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Deleting Objects with Hibernate 1. Overview As a full-featured ORM framework, Hibernate is responsible for lifecycle management of persistent objects (entities), including CRUD operations such as read, save, update and delete. In this article, we explore various ways in which objects may be deleted from a database using Hibernate and… Continue Reading delete-with-hibernate
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Guide to the Guava BiMap 1. Overview In this tutorial, we’ll show how to use the Google Guava’s BiMap interface and its multiple implementations. A BiMap (or “bidirectional map”) is a special kind of a map which maintains an inverse view of the map while ensuring that no duplicate values… Continue Reading guava-bimap
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A Custom Spring SecurityConfigurer 1. Overview The Spring Security Java configuration support provides us with a powerful fluent APIs – to define security mappings and rules for an application. In this quick article, we’ll see how we can take this one step forward and actually define a custom configurer; this… Continue Reading spring-security-custom-configurer
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Cachable Static Assets with Spring MVC 1. Overview This article focuses on caching static assets (such as Javascript and CSS files) when serving them with Spring MVC. We’ll also touch on the concept of “perfect caching”, essentially making sure that – when a file is updated – the old version… Continue Reading cachable-static-assets-with-spring-mvc
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