Java Resources

Java 8: ConcurrentHashMap Atomic Updates

Here's a great look at what Java 8 brought to ConcurrentHashMaps, including close looks at the methods at your disposal and their performance impacts.

Updated April 23, 2021

by Tony Tapper

· 77,855 Views · 16 Likes

Spring Boot Microservices + Apache Camel: A Hello World Example

A tutorial on to use Spring Boot in tandem with Apache Camel to unlock the power of routes in your mircoservice-based applications.

April 23, 2021

by Nazia Shaikh

· 18,515 Views · 4 Likes

How to Create a Java Library: From Scratch to Maven Central

If you usually need to rewrite or copy similar code between different projects, it may be time to stop replicating it and create a library.

April 22, 2021

by Helber Belmiro

CORE

· 51,973 Views · 5 Likes

How to Validate a VAT Number in Java

Determine if a VAT Identification Number is valid by using an API in Java. If valid, business contact information will be retrieved as well.

April 21, 2021

by Brian O'Neill

CORE

· 4,634 Views · 1 Like

Beginner's Guide to Compilation in Java

Java applications are complied to bytecode then JIT and JVM takes care of code execution. Here you will find some insights about how JIT compiler works.

April 21, 2021

by Bartłomiej Żyliński

CORE

· 8,978 Views · 12 Likes

Spring Data JPA + QueryDSL: Taking the Best From Both Worlds

An example of combining the two most powerful frameworks for building a maintainable and type-safe persistence layer; from Spring Data JPA we will take only CRUD operations and for all complex queries we will use QueryDSL.

Updated April 18, 2021

by Dmytro Stepanyshchenko

· 30,057 Views · 5 Likes

Running Selenium Tests in Jenkins

Wondering how to integrate Jenkins with Selenium WebDriver? This guide will help you run Selenium tests in Jenkins. Learn more.

April 16, 2021

by Shalini Baskaran

· 26,443 Views · 4 Likes

How to Call SOAP Services Using REST

SOAP, being a mature technology, has an extensive and often differently interpreted standard set. This article discusses how to call SOAP services using REST.

April 16, 2021

by Anthony Morris

· 25,238 Views · 5 Likes

How to Delay Database Connection Acquisition in Hibernate (Spring Data)

In the case of resource-local (a single data source), Hibernate will acquire the database connection of a JDBC transaction right after the transaction starts.

April 16, 2021

by Anghel Leonard

CORE

· 16,408 Views · 5 Likes

Resize a Video in Java

Learn how to resize a video with the optional preservation of the aspect ratio using APIs in Java.

April 16, 2021

by Brian O'Neill

CORE

· 4,879 Views · 1 Like

Survival Guide for the Java Architect in the Cloud Era

April 15, 2021

by Otavio Santana

CORE

· 8,027 Views · 6 Likes

Build Even Faster Quarkus Applications With fast-jar

Quarkus is already fast, but what if you could make inner loop development with the supersonic, subatomic Java framework even faster? Introducing the fast-jar format!

April 15, 2021

by Daniel Oh

CORE

· 8,647 Views · 4 Likes

7 Practical Secure Coding Practices

Software Security is important more than ever. This article provides multiple live secure coding examples one has to apply while developing modern-day software.

April 14, 2021

by Awkash Agrawal

· 11,337 Views · 9 Likes

Guidelines for Java Code Reviews

Get a jump-start on your next code review session with this list.

April 14, 2021

by Meenakshi Dhanani

· 9,268 Views · 9 Likes

The Magic of Apache Spark in Java

An experience software architect runs through the concepts behind Apache Spark and gives a tutorial on how to use Spark to better analyze your data sets.

April 13, 2021

by Reza Ganji

CORE

· 46,214 Views · 21 Likes

How to Get Macro Information From Word and Excel in Java

Retrieve information about the macros defined in a Microsoft Word or Excel document.

April 11, 2021

by Brian O'Neill

CORE

· 5,995 Views · 1 Like

How to Add a Watermark to a PDF Document in Java

Learn how to use an API to add a customizable text watermark to a PDF file.

April 9, 2021

by Brian O'Neill

CORE

· 5,608 Views · 1 Like

Spring 4 + Hibernate 4 + MySQL 8 + Maven Integration Using Annotations Configuration [Video]

It sounds like a task, but this video will take you through the entire process of integrating Spring 4, Hibernate 4, MySQL 8, and Maven in around 10 minutes.

April 8, 2021

by Ram N

· 4,879 Views · 2 Likes

WebFlux: Reactive Programming With Spring, Part 3

The third part of the blog series contains an introduction to WebFlux – Spring's reactive web framework.

April 8, 2021

by Anna Eriksson

· 34,053 Views · 18 Likes

Simple Quarkus Example With CORS

Learn how to enable the CORS filter with Quarkus.

April 6, 2021

by Chandra Shekhar Pandey

· 19,341 Views · 2 Likes

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