F.Marchioni

Getting started with GitHub Actions

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GitHub Actions is a flexible and powerful automation service that allows you to automate, customize, and execute workflows directly in your GitHub repository. These workflows can automate various tasks such as building, testing, deploying, and publishing software. In this article we will learn how to get started with GitHub Actions by building a simple Maven … Read more

How to run Keycloak with Docker

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In this tutorial, we’ll walk you through the step-by-step process of running Keycloak with Docker, enabling you to streamline authentication and authorization for your applications. We will explore the integration of Keycloak within Docker containers, optimizing the process with Docker Compose for efficient deployment and management of authentication and authorization services.

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Solving “Syntax error in SQL statement: expected “identifier”

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When working with JPA (Java Persistence API) and defining entity classes, it’s crucial to avoid using reserved words as identifiers for attributes or table names. Failure to do so may lead to SQL syntax errors, as demonstrated by the given issue.

In this tutorial, we’ll walk through the steps to resolve the SQL syntax error caused by using reserved words in a JPA entity class.

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Solving java.lang.OutOfMemoryError: Metaspace error

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The error java.lang.OutOfMemoryError:Metaspace indicates that you have exhausted an area of JVM which serves as a registry for your application’s Class Metadata. This article is a step-by-step guide to analyze the issue, determine the root cause of it and take actions to resolve it.

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Getting started with Jakarta EE

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This article will detail how to get started quickly with Jakarta EE which is the new reference specification for Java Enterprise API. As most of you probably know, the Java EE moved from Oracle to the Eclipse Foundation under the Eclipse Enterprise for Java (EE4J) project. There are already a list of application servers which offer a Jakarta EE compatible implementation such as WildFly. In this tutorial we will learn how to bootstrap a Jakarta EE project.

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How to run WildFly on Openshift

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This tutorial will teach you how to run WildFly applications on Openshift using WildFly S2I images. At first, we will learn how to build and deploy applications using Helm Charts. Then, we will learn how to use the S2I legacy approach which relies on ImageStreams and Templates.

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