Learn the difference between Final and Effectively Final in Java. >>>
Yearly Archives: 2020
JPA Entity Lifecycle Events
Explore what the JPA entity lifecycle callbacks are and when they’re called. >>>
Introduction to Dropwizard
Learn how to set up a Dropwizard application with Maven. >>>
java.net.UnknownHostException: Invalid Hostname for Server
Learn what causes UnknownHostException, how to prevent it, and how to handle it. >>>
Merge Cells in Excel Using Apache POI
Learn how to merge cells in Excel with Apache POI >>>
Guide to the Cactoos Library
Explore the Cactoos library and some of the classes it provides for string and data structure manipulation. >>>
Parsing Command-Line Parameters with Airline
Learn how to parse command-line parameters with Airline >>>
Guide to @CurrentSecurityContext in Spring Security
Reading from the Spring Security Context can require a bit of boilerplate code. With the @CurrentSecurityContext annotation we can inject the values we need. >>>
Generating Barcodes and QR Codes in Java
Java has a few libraries we can call on to generate barcodes or QR codes. Here we see how to use them and integrate them into a web application. >>>
Working with Lazy Element Collections in JPA
Learn how to work with lazy collection in JPA. >>>
Creating a LocalDate with Values in Java
Explore all the variants of creating a LocalDate with values in Java. >>>
Guide to Work Stealing in Java
Learn about work stealing in Java. >>>
Balanced Brackets Algorithm in Java
Learn how to address the problem of Balanced Brackets, also known as Balanced Parentheses, with Java. >>>
List All Available Redis Keys
Learn how to list all of the available Redis keys >>>
Introduction to Jsoniter
Learn how to parse JSON with Jsoniter (json-iterator) >>>
Java Weekly, Issue 317
An intro to the Reactive programming support in several high-profile Spring projects, and several new releases are out for Spring Boot and Core. >>>
What Causes java.lang.reflect.InvocationTargetException?
Learn what Causes java.lang.reflect.InvocationTargetException. >>>
New Features in Java 13
Learn about the new features and improvements introduced in JDK 13 >>>
Java Weekly, Issue 316
A deep dive into coroutines in Kotlin, and a guide to the RFC-7807 standard for communicating API problems to client applications. >>>
Introduction to Big Queue
Learn about the Big Queue, a Java implementation of a persistent queue. >>>