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Server-Sent Events (SSE) In JAX-RS 1. Overview Server-Sent Events (SSE) is an HTTP based specification that provides a way to establish a long-running and mono-channel connection from the server to the client. The client initiates the SSE connection by using the media type text/event-stream in the Accept header. Later, it gets… Continue Reading java-ee-jax-rs-sse
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Exceptions in Netty 1. Overview In this quick article, we’ll be looking at exception handling in Netty. Simply put, Netty is a framework for building high-performance asynchronous and event-driven network applications. I/O operations are handled inside its life-cycle using callback methods. More details about the framework and how to get… Continue Reading netty-exception-handling
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Hibernate: save, persist, update, merge, saveOrUpdate 1. Introduction In this article we will discuss the differences between several methods of the Session interface: save, persist, update, merge, saveOrUpdate. This is not an introduction to Hibernate and you should already know the basics of configuration, object-relational mapping and working with entity… Continue Reading hibernate-save-persist-update-merge-saveorupdate
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Java Web Weekly, Issue 175 Lots of interesting writeups on Java 9 this week. Here we go… 1. Spring and Java ===== >> IBM and Red Hat to Vote “No” on Java Modules (Jigsaw) [infoq.com] Java 9 is scheduled to be released 3 months from now but Jigsaw is still… Continue Reading java-web-weekly-175
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Custom Types in Hibernate and the @Type Annotation Persistence Hibernate 1. Overview Hibernate simplifies data handling between SQL and JDBC by mapping the Object Oriented model in Java with the Relational model in Databases. Although mapping of basic Java classes is in-built in Hibernate, mapping of custom types is often complex.… Continue Reading hibernate-custom-types
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Introduction to JBoss Undertow 1. Overview Undertow is an extremely lightweight and high-performance web server from JBoss. It supports both blocking and non-blocking APIs with NIO. Since it’s written is Java, it can be used in any JVM-based applications in embedded mode, even JBoss’s WilfFly server internally uses Undertow to… Continue Reading jboss-undertow
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Intro to Querydsl 1. Introduction This is an introductory article to get you up and running with the powerful Querydsl API for data persistence. The goal here is to give you the practical tools to add Querydsl into your project, understand the structure and purpose of the generated classes, and… Continue Reading intro-to-querydsl
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Removing all Nulls from a List in Java This quick tutorial is going to show how to remove all null elements from a List, using plain Java, Guava, the Apache Commons Collections and the newer Java 8 lambda support. This article is part of the “Java – Back to Basic”… Continue Reading java-remove-nulls-from-list
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Creating the Java Builder for a Class in IntelliJ 1. Introduction The Builder design pattern is one of the most widely used creational patterns. It helps us to construct complex objects. Writing builders by hand is cumbersome and error-prone. Therefore, we should use dedicated tools to auto-generate them whenever possible.… Continue Reading intellij-idea-java-builders
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Generics in Kotlin 1. Overview In this article, we’ll be looking at the generic types in the Kotlin language. They are very similar to those from the Java language, but the Kotlin language creators tried to make them a little bit more intuitive and understandable by introducing special keywords like… Continue Reading kotlin-generics
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