Posts

Java

From my experience, Vaadin has always stood out from other Java frameworks. Of course, it enables the creation of modern web UIs, but the …

19 Aug 2025 6 min

Java

1. Introduction and objectives The first two parts of this series established the theoretical and practical foundations of a URL shortener …

15 Aug 2025 19 min

Java

1. Introduction Why REST integration in Vaadin applications should not be an afterthought In modern web applications, communication with …

24 Jun 2025 28 min

Java

1. Introduction to implementation 1.1 Objectives and differentiation from the architectural part The first part of this series focused on …

20 Jun 2025 20 min

Java

A URL shortener seems harmless – but if implemented incorrectly, it opens the door to phishing, enumeration, and data leakage. In this first …

10 Jun 2025 25 min

Java

A deep look into Java’s HashMap traps – visually demonstrated with Vaadin Flow. The silent danger in the standard library The use of HashMap …

6 Jun 2025 15 min

Java

Vaadin Flow is a robust framework for building modern web applications in Java, where all UI logic is implemented on the server side. In …

20 May 2025 14 min

Java

What is the Java Instrumentation API? The Java Instrumentation API is part of the java.lang.instrument package and allows you to change or …

11 Apr 2025 14 min

Java

Sometimes it’s not enough for something to work - it has to work under load. In modern applications that process large amounts of …

8 Apr 2025 17 min

Security

1. Getting started – trust in everyday internet life Anyone who enters a web address like “www.example.de” into the browser expects a …

7 Apr 2025 18 min

Java

The Java Cryptography Architecture (JCA) is an essential framework within the Java platform that provides developers with a flexible and …

3 Apr 2025 17 min

Concurrency

Since version 8, Java has introduced an elegant, functional approach to processing data sets with the Streams API. The terminal operation …

2 Apr 2025 18 min