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Graceful Shutdown of a Spring Boot Application 1. Overview On shutdown, by default, Spring’s TaskExecutor simply interrupts all running tasks, but it may be nice to instead have it wait for all running tasks to be complete. This gives a chance for each task to take measures to ensure the… Continue Reading spring-boot-graceful-shutdown
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Java Application Remote Debugging 1. Overview Debugging a remote Java Application can be handy in more than one case. In this tutorial, we’ll discover how to do that using JDK’s tooling. 2. The Application Let’s start by writing an application. We’ll run it on a remote location and debug it… Continue Reading java-application-remote-debugging
The State of Java in 2019 I’ve been running the yearly 2019 “State of Java” survey for the last couple of weeks. In its 6th year, we had 6707 developers taking the time to go through and answer; if that was you – thank you! Time for the results ?… Continue Reading java-in-2019
Using Multiple Source Objects with MapStruct 1. Overview In this tutorial, we’ll see how to use multiple source objects with MapStruct. 2. Single Source Object The most common use case for MapStruct is to map one object to another. Let’s assume we have a Customer class: class Customer { private… Continue Reading mapstruct-multiple-source-objects
Transaction Propagation and Isolation in Spring @Transactional 1. Introduction In this tutorial, we’ll cover the @Transactional annotation and its isolation and propagation settings. 2. What Is @Transactional? We can use @Transactional to wrap a method in a database transaction. It allows us to set propagation, isolation, timeout, read-only, and rollback conditions… Continue Reading spring-transactional-propagation-isolation
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Ignoring Unmapped Properties with MapStruct 1. Overview In Java applications, we may wish to copy values from one type of Java bean to another. To avoid long, error-prone code, we can use a bean mapper such as MapStruct. While mapping identical fields with identical field names is very straightforward, we… Continue Reading mapstruct-ignore-unmapped-properties
How to Change the Java Version in an IntelliJ Project 1. Overview In this tutorial, we’ll look at how to change the JDK version in IntelliJ projects. This will work on both Community and Ultimate Editions of IntelliJ. 2. Project Structure Settings IntelliJ stores the JDK version used by the… Continue Reading intellij-change-java-version
Guide to Tomcat Manager Application 1. Introduction In this tutorial, we’re going to take an in-depth look at the Tomcat Manager Application. In a nutshell, the Tomcat Manager App is a web application that is packaged with the Tomcat server and provides us with the basic functionality we need to… Continue Reading tomcat-manager-app
Java Weekly, Issue 302 1. Spring and Java ===== >> What’s new in Spring Data Moore? [spring.io] Tons of new features across the board, with a strong focus on Reactive, Kotlin, and Performance. >> JUNIT 5 And Selenium – Using Selenium Built – In ‘ PAGEFACTORY’ To Implement Page Object… Continue Reading java-weekly-302
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Java Scanner hasNext() vs. hasNextLine() 1. Overview The Scanner class is a handy tool that can parse primitive types and strings using regular expressions and was introduced into the java.util package in Java 5. In this short tutorial, we’ll talk about its hasNext() and hasNextLine() methods. Even though these two… Continue Reading java-scanner-hasnext-vs-hasnextline