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Spring: Autoconfiguration package and the missing JPA Entities (Not a managed type error)

Configure Spring Boot a multi module project with JPA entities in a different module. / 2023-04-23

Deploy Angular with Spring Boot in the same executable JAR

Tutorial: How to build an Angular 15 and Spring Boot 3 app in a single JAR. Maven configuration. / 2023-04-16

@PostConstruct and @PreDestroy examples in Java

How execute code when your Spring Boot application starts / end / 2023-04-07

Deploy a Java Web App in DigitalOcean using GitHub Actions

How to deploy a maven application in DigitalOcean directly from GitHub / 2023-04-06

Spring Boot Liquibase Tutorial

Tutorial: use Liquibase with Spring to update your database / 2023-03-27

How to use Oracle and PostgreSQL scripts and functions in H2 Database using Java

/ 2022-10-10

Spring Boot update the HTTP Headers of the static assets

/ 2022-10-06

How to remember original Design patterns during a technical interview

Can each team member be linked to a Design Pattern? / 2022-03-15

How to deploy a Java and React webapp in one JAR/WAR

How to configure a fullstack React and Spring Boot application / 2022-03-03

Spring Boot Kafka example

How to quickly configure a Spring Boot - Kafka environment and create Topic, Consumer and Producer / 2022-02-28

Spring Boot OpenAPI generator example

How to generate your REST methods and Spring controllers using OpenAPI / Swagger / 2022-02-15

Spring Boot: REST controller Test example

How to test the @RestController with Spring Boot / 2017-10-01

Spring Boot RestTemplate: test GET request with JSON body is not working

How to test your REST GET controller with Spring Boot / 2022-02-11

Java 18 new features - Simple Web Server

A basic web server for testing and education / 2022-02-02

Java Streams and Lambda quick introduction

Quick notes about Java Streams and Lambda expressions / 2022-01-27

How to return a custom 404 or 410 with Spring Boot

How to create a custom error page in Spring Boot and fix the Whitelabel error page / 2022-01-14

How to reverse a String in Java

How to reverse a String in Java, for the interview and the fun / 2022-01-11

Spring Boot error message: Failed to configure a DataSource

Why the DataSource error appears and how to solve it / 2022-01-05

Generate a sitemap with Java

Generate a sitemap with Java for your Website. / 2022-01-04

Java 17: Map.Entry.copyOf

A new function introduced in Java 17 / 2022-01-04

Spring Boot and MongoDB example

How to connect Spring Boot to MongoDB / 2022-01-04

Eclipse setup for Java Development

First steps after installing Eclipse / 2022-01-01

Apache NetBeans - clear the cache and rebuild maven idexes

Sometimes a cleanup can fix IDE issues / 2021-12-30

How to use PostgreSQL with WildFly and JBoss

Tutorial: Configuring PostgreSQL in WildFly and JBoss / 2021-12-28

Log4j - How to protect my application?

Is my application vulnerable? Which version should I use? Is Spring Boot impacted? / 2021-12-16

How to hot deploy a Spring Boot application

Hot deployment with Spring Boot? It is possible! / 2021-12-06

Maven - How to skip tests in Java

How to correctly skip tests in Maven / 2021-11-30

How to convert an array of bytes to a String in Java

How to convert byte[] to String and vice versa / 2021-11-30

Spring Boot: How do I execute my code on startup?

Spring Boot: How do I execute my code on startup? / 2021-11-24

Maven: install on mac. Tutorial for brew and the official method.

How to install Maven on mac using brew, tutorial using macOS Monterey - M1 / 2021-11-24

Spring: test your MySQL JPA with H2

How to test your repository using H2 when you use MySQL in production. / 2021-03-21

Fix the Whitelabel error in Angular and Spring Boot

How to solve the Whitelabel Error when a Javascript (React, Angular) application is deployed with Spring Boot / 2021-03-05

Add Grafana to your Spring / Quarkus application using Jelastic

Tutorial: add Grafana and Prometheus to a Spring Boot / Quarkus app using Jelastic / 2021-02-14

Spring Boot redirect and HTTP 301

Migration from Jekyll to Spring Boot / 2021-01-21

Spring Boot MariaDB connection and issues

How to connect Spring Boot to MariaDB / 2021-01-21

MariaDB root password error

Solve the Access Denied for User root@localhost error / 2021-01-21

Java sealed classes - From Java 11 to Java 17

Sealed classes - Java 17 LTS new feature / 2020-10-29

Java Text Blocks - From Java 11 to Java 17

Text blocks - Migrating from Java 11 LTS to Java 17 LTS - Java 15 new feature / 2020-10-29

Java 16

Java 16 new features / 2020-10-28

Java test preview features

Java test preview features / 2020-10-27

Java 15

Java 15 new features / 2020-10-27

Maven: find a package

Search a dependency in a maven tree / 2020-07-15

Preview the new features in Java

How to use preview features in Java / 2020-01-23

Java Records, tutorial and code examples

Records in Java 14. Published in DZone. / 2020-01-23

Artificial Intelligence for Java: resources

AI and ML resources for Java developers / 2019-11-24

Angular and Java Setup on Mac

Quick and easy install Java and Angular / 2019-11-17

Garbage collectors for the busy Java developer (10 min, no maths ;))

(Video + Slides) JavaZone Conference / 2019-10-01

Java 17 new feature: Teeing Collector

Teeing Collector examples. A Java 17 LTS new feature! / 2019-03-23

Calculate the difference between two dates in Java

Count the days between two dates / 2019-02-11

The final keyword in Java

The final keyword doesnt guarantee the immutabily of your objects. Its really performant? / 2018-10-03

Initialize a HashMap in Java - Best practices

HashMap initialization and best practices / 2019-01-10

Difference between protected and default/package access in Java

Visual memo of the access modifiers and controls / 2019-01-05

Configure nginx in Jelastic

Use compression with nginx / 2019-01-05

Deploy a WAR as root in WildFly

Deploy to / / 2019-01-04

Create a list of objects from a file using lambda expressions in Java

Read the file, create and sort the object list / 2019-01-04

Config files in Java EE / Jakarta EE using MicroProfile

How to store the configuration in external files? / 2018-11-14

Spring common annotations meaning

What is this annotation doing in the code? / 2018-11-06

Blockchain: How to generate a SHA-256 hash with Java

Blockchain: How to generate a SHA-256 hash with Java / 2018-10-25

The price of Java 11

OpenJDK 11 is free, for OracleJDK you have to pay for production environments. More details here. / 2018-09-01

Spring Integration mail

How to send email using Spring Integration and create smtp unit tests / 2018-08-11

How to deploy a Spring Boot application with Docker

Simple deploy of your Spring Boot app / 2018-04-30

Comment déployer une application web en Java et Angular dans un seul artéfact JAR ou WAR

‘Comment configurer une application Angular et Spring Boot Full-Stack’ / 2018-04-26

How to deploy a Java and Angular webapp in one JAR/WAR

How to configure a fullstack Angular and Spring Boot application / 2018-04-26

Spring Boot best practices

Some tips for your Spring development / 2018-01-01

Spring Boot, Caching and Hazelcast

How to add caching features with Hazelcast / 2017-11-20

Build, test and deploy with Jenkins

One click deploy your Java application (Java EE, Spring) / 2017-09-17

Create Cross-Origin requests (CORS)

How to allow communication between your Angular frontend and the Java Backend / 2017-07-13

Spring Boot, React, Hello World tutorial

The Spring Boot - React tutorial is coming / 2017-07-11

REST and Spring Boot: manage users rights with a custom Filter and properties

Simple solution when only few users have writing rights. / 2017-07-08

Java EE 8 - CDI 2.0: Events and Observers

Java EE 8 - CDI 2.0: Events and Observers / 2017-04-19

Why when I refresh a page in Angular with Java I get an http 404 error?

/ 2017-04-12

Angular CLI, Java EE and REST : tutorial and quick starter code for Hello World

/ 2017-03-12

Tutorial : Deploy your Java app with AWS Elastic Beanstalk - Tutorial

/ 2017-03-01

Performance improvement with Angular and Spring Boot

/ 2017-02-20

Send an image from the Java backend to Angular using REST services

/ 2017-02-11

H2 with Spring Boot and JPA - Tutorial

/ 2017-02-02

Cheap and easy DevOps for developers (Docker, Ubuntu, Apache and Spring)

/ 2017-01-30

How to test our REST services using Spring Boot?

/ 2017-01-29

Angular, Spring Boot and OAuth2

/ 2017-01-19

Angular and Java, which IDE?

/ 2016-09-17

How to run java program in cmd

Start a java program from the command line / 2016-07-15

Java Threads meaning

/ 2016-04-21

Change JDK and JRE in Eclipse for Mac OS

/ 2016-04-20

Java Server Sent Event - Automatically update web pages

/ 2016-04-17

RESTful web service with Java EE (JAX-RS) and JSON: Hello World tutorial

/ 2016-02-05

Printer Tray Selection in Java (win and linux)

/ 2013-12-28

Basic Spring MVC example with Thymeleaf and no XML (annotation based configuration)

/ 2013-11-02

Spring Boot : Batch tutorial using MySQL, JPA and annotations

/ 2013-10-27

Spring Batch tutorial: how to import all the stock symbols from flat files

/ 2013-08-04

Use a p12 certificate with Web Services / SSL in Java and CXF

/ 2013-06-30

Spring Integration Hello World tutorial

/ 2013-04-20

Spring MVC and MongoDB tutorial

/ 2013-03-29

Minimalistic JSF Java EE 6 tutorial using Maven/Eclipse/TomEE

/ 2013-03-23

Multiple persistence units in persistence.xml using EclipseLink

/ 2012-11-02

Use Groovy has Spring bean in a JSF web application

/ 2009-04-01