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AWS re:Invent has just completed. It was a huge event with 50,000+ attendees across 7 of the biggest…

One of the big announcements at AWS re:Invent this week was the AWS App Mesh.Before talking abou…

Java programmers: don’t let the dreaded StackOverFlowError throw you off course. Ram Lakshmanan explores this common error and what causes it.

1. IntroductionSQL GROUP BY is a very useful aggregation function. It groups database records on c…

Java Applications, like any other, are susceptible to gaps in security. This Refcard focuses on the top vulnerabilities that can affect Java applications and how to combat them.

Automated Health Check Checker – a new feature that allows you to configure an automated check within Payara Server to periodically poke the /health endpoint of all instances in a cluster, just as how the container manager would.

Explore the differences between an Unmodifiable Map and Immutable Map in Java.

Quite often we need to sort array in Java luckily java.util.Arrays class provide several utility method to sort java array of any type e….

Q&A for work. A dedicated place to share your team’s knowledge. I’ve an object, class Object2{ String name; String id; ….

I know below is the code to find out the occurrence of each String attributes in list , how can I filter this list with only duplicates item i.e having more than 1 occurrence. Sorry I am new to jav…

We focus on the important features of Apache Cayenne 4.0 — database-first flow and the new query API that will make your ORM modeling and coding much easier.

How to find the first match or the last element in a list using java stream?Which means if no element matches the condition，then return the last element.eg:OptionalInt i = IntStream.rangeClos…

A Capable and Ergonomic Java IDE for Enterprise Java, Scala, Kotlin and much more…

Few days back I’ve written an article on how to setup and start MemCached Server locally on you Mac OS with few simple steps. There are three different