While developing a spring boot application, sometimes we need to run a method or a piece of code at startup. This code can be anything ranging from,

Learn how to parse command-line parameters with Airline

Learn how to process lines in a large file efficiently with Java - no need to store everything in memory.

Learn about the @SafeVarargs annotation in Java

We have created a new quickstart that extends OptaPlanner use case portfolio with the facility location problem and also demonstrates building a

Revisiting project Jigsaw and first-level cache in Hibernate, a little competition for SDKMAN!, moving data at petabyte scale, and fallacies about time and timezones!

Learn about the differences between ClassNotFoundException and NoClassDefFoundError.

Learn the differences between Java's checked and unchecked exception with some examples

How to Convert between an Array and a List Using plain Java, Guava or Apache Commons Collections.

Java 14 brings in a new API to wrap accessing memory managed outside of the JVM. Here we explore the need for the API and how it works.

Learn what features java.util.Arrays has, including what's new from Java 8

Learn how to use MapUtils to perform common Map operations.

Learn about the new Java 11 feature of single-file source-code programs

A quick and practical overview of the Visitor design pattern in Java.

Learn how to calculate the difference between dates in Java, using native approach, as well as external libraries.

Learn how to retrieve the intersection of two Lists.

Learn about the Math class that provides helpful static methods for performing numeric operations.

Explore the functionality offered by Apache Commons and Google Guava, specifically in the area of the collections framework.

Interested to learn about Hoverfly? Check our article explaining how you can do Testing with Hoverfly and Java.

In this post, I will demonstrate how to create a simple web service using Spring Boot.  This framework makes it almost effortless to develop web