How to fix CVE-2023-29017

The CVE-2023-29017 is about a flaw in how VM2 handles errors asynchronously within a sandbox environment. If not properly handled, such errors might allow an attacker to escape the restrictions of the sandbox and execute code with greater privileges, potentially compromising the host system’s security. This article discusses how to solve the issue.

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How to add an Admin User in Keycloak

Creating an admin user in Keycloak is a mandatory step for automating administrative tasks and managing your Keycloak instance. This tutorial will guide you through the process of adding an admin user to Keycloak using the Web Console or environment variables. The default flow to add an Admin User Firstly, when you install a Keycloak … Read more

How to run standalone Jakarta Batch Jobs

Jakarta Batch, formerly known as Java Batch, is a specification that provides a standardized approach for implementing batch processing in Java applications. It offers a robust and scalable framework for executing large-scale, long-running, and data-intensive tasks. In this tutorial, we will explore the process of running Jakarta Batch Jobs as standalone Java applications, discussing the … Read more

Securing WildFly Management Console with Keycloak

WildFly 29 introduces the ability to secure WildFly Management Console with KeyCloak OpenID Connect Clients. In this article we will go through the steps you need to configure WildFly elytron-oidc-client subsystem and the Keycloak Realm. By the end of it, you will learn how to secure your WildFly Management Console with Keycloak OpenID Connect.

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Develop a REST application using Jakarta EE and AngularJS

In this tutorial, we will walk through the process of developing an AngularJS frontend for a REST server application. AngularJS is a popular JavaScript framework that simplifies the development of dynamic web applications. We will assume that you have basic knowledge of HTML, CSS, and JavaScript. Prerequisites To keep this tutorial simple, we will not … Read more

Migrating from Java 8 to Java 17 with OpenRewrite

In this article we will discuss on how to migrate Java applications from Java 8 to Java 17 using the OpenRewrite migration plugin. At the end of this tutorial, you will learn which are most common challenges that you can face when upgrading to Java 17 Java 8 to Java 17 challenges In pure project … Read more

Parsing PDF in Java made simple

When it comes to parsing PDF files in Java, two popular libraries stand out: Apache Tika and Apache PDFBox. Both libraries provide powerful features for working with PDF documents, but they have different approaches and trade-offs. In this article, we will explore how to parse a PDF using each library and compare their pros and … Read more