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Introduction to the Event Notification Model in CDI 2.0 Java EE 1. Overview CDI (Contexts and Dependency Injection) is the standard dependency injection framework of the Jakarta EE platform. In this tutorial, we’ll take a look at CDI 2.0 and how it builds upon the powerful, type-safe injection mechanism of CDI 1.x… Continue Reading cdi-event-notification
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Find the Number of Lines in a File Using Java 1. Overview In this tutorial, we’ll learn how to find the number of lines in a file using Java with the help of standard Java IO APIs, Google Guava and the Apache Commons IO library. 2. NIO2 Files Note that,… Continue Reading java-file-number-of-lines
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Conditionally Enable Scheduled Jobs in Spring Spring 1. Introduction The Spring Scheduling library allows applications to execute code at specific intervals. Because the intervals are specified using the @Scheduled annotation, the intervals are typically static and cannot change over the life of an application. In this tutorial, we’ll look at… Continue Reading spring-scheduled-enabled-conditionally
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Spring Security Authentication Tutorial Login / Authentication + Form Login + Login – Error Handling and Localization + Prevent Brute Force Authentication Attempts + Roles and Privileges + Remember Me + Persistent Remember Me + Redirect to different pages after Login + Logout A Production-Grade Registration Process + Spring Security… Continue Reading spring-security-authentication-and-registration
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What’s New in Spring Boot 2? 1. Overview Spring Boot brings an opinionated approach to the Spring ecosystem. First released in mid-2014. Spring Boot has been through a lot of development and improvement. Its version 2.0 is today getting ready for release at the beginning of 2018. There are different… Continue Reading new-spring-boot-2
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Permgen vs Metaspace in Java 1. Introduction In this quick tutorial, we’re going to examine the differences between the PermGen and Metaspace memory regions in the Java environment. It’s important to keep in mind that, starting with Java 8, the Metaspace replaces the PermGen – bringing some substantial changes. 2. PermGen… Continue Reading java-permgen-metaspace
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Guide to Spock Extensions 1. Overview In this tutorial, we’ll take a look at Spock extensions. Sometimes, we might need to modify or enhance our spec’s lifecycle. For example, we’d like to add some conditional execution, retry on randomly failing integration test, and more. For this, we can use Spock’s… Continue Reading spock-extensions
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Load a Resource as a String in Spring 1. Overview In this tutorial, we’ll look at various ways to inject the contents of a resource containing text as a String into our Spring beans. We’ll look at locating the resource and reading its contents. Also, we’ll demonstrate how to share… Continue Reading spring-load-resource-as-string
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Introduction to Jooq with Spring 1. Overview This article will introduce Jooq Object Oriented Querying – Jooq – and a simple way to set it up in collaboration with the Spring Framework. Most Java applications have some sort of SQL persistence and access that layer with the help of higher-level tools… Continue Reading jooq-with-spring
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RestTemplate Post Request with JSON 1. Introduction In this tutorial, we’ll illustrate how to use Spring’s RestTemplate to make POST requests sending JSON content. Further reading: Exploring the Spring Boot TestRestTemplate Learn how to use the new TestRestTemplate in Spring Boot to test a simple API. Read more → Spring… Continue Reading spring-resttemplate-post-json
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