For my German followers - Vaadin Flow Tutorial: Starte deine Java Web App mit meinem Template-Projekt - no Spring / JakartaEE - www.youtube.com/watch?v=Vq4Z... #vaadin #java

#java #sse #realtime #events

#Java #Flow #Processor - Old but powerful tools inside the #JDK

Signal via SSE, data via REST – a Vaadin demonstration in Core Java 1. Introduction 1.1 Motivation: Event-driven updating without polling In classic web applications, the pull principle still dominates: Clients repeatedly make requests to the server to detect changes. This polling is simple, but…

#java #vaadin #designpattern #observer svenruppert.com/2025/09/01/h...

svenruppert.com/2025/08/29/p... #security #hashing #java #cybersecurity #coding

Next part of the series about URL-shortener. Now, we are connecting the Service with a WEB-UI based on #vaadin flow. svenruppert.com/2025/08/15/p... #java #vaadin

Would you like to participate for winter training in Germany and Swedish Lapland next winter? - ping me :.-) #winter #arctic #arcticadventure #nevergiveup #adventuretravel #adventure #nature #bushcraft #survival #lappland #arcticcircle #germany

Just for #fun - an short #video on #youtube showing #bumblebees in action - youtu.be/1ba0ozBOYc0 #ASMR #NatureVideo #Bumblebees #Pollinators #SlowTV #Mindfulness #Buzzing #MacroVideo #FieldRecording #Insects #Wildlife #macro

How to connect a @vaadin.com flow ap with a rest service in core #java svenruppert.com/2025/06/24/c...

www.youtube.com/watch?v=u-tS... #hashmap #java #german #youtube

svenruppert.com/2025/06/10/s... #java #architecture #security

for my german reading followers.. Mutable hashCode() + HashMap-Key = ⚠️ Gefahrenquelle Wer veränderliche Objekte als Schlüssel verwendet, riskiert unsichtbare Einträge und vieles mehr #Java #Security #MutableKey javapro.io/de/wenn-hash... #java #hashmap #mutable #vaadin

Mutable hashCode() in Java keys = recipe for disaster ☠️ #JavaSecurity #HashMap #Java #SecureCoding #Vaadin @vaadin.com svenruppert.com/2025/06/06/i...

for my german reading follower.. published a post about CWE-22 CWE-377 and CWE-778 and how to harden against it. The demo is written in @vaadin.com Flow. javapro.io/de/erstellen... #vaadin #java #securecoding #cybersecurity #owasp

Secure file handling with Vaadin Flow. Focused on: 🔐 CWE-22 – Path Traversal 📁 CWE-377 – Unsafe temp files 📉 CWE-778 – Weak logging Use Java, NIO and structured logging to build safe upload/download flows. #JavaDev #Vaadin #SecureSoftware #WebSecurity svenruppert.com/2025/05/20/c...

#java #workshop #secure #coding jugsaxony.org/timeline/202...

me, coding on my new idea right now.. ;-) #java #security #ai #motivation

for the german readers: my latest article on @golemde.bsky.social - about @eclipsestore.bsky.social #java #performance #persistence www.golem.de/news/eclipse...

It was a great #team Here we are on the way back to the #basecamp to switch from #pulka to #backpack for the next #training unit - #night #navigation in the field with #magnetic anomalies // #motivation #nevergiveup #TeamBuilding #lappland #arcticcircle #winter

Just published something for the Core Java nerds 🤓 Built a tiny REST API using HttpServer, then injected logging behavior at runtime using a Java Agent. 🧠 100% JDK-only. No libs. No frameworks. 📖 svenruppert.com/2025/04/11/o... #java #bytecode #instrumentation #jvm #agent #corejava

Java devs: ever wondered what really happens behind .parallelStream().collect(...)? I dove into how parallel collectors work, when they’re safe, and when they quietly betray your data. svenruppert.com/2025/04/08/s... #java #streams #parallels #devwriting

Remember when DNS was “just” the phonebook of the internet? Now it’s a battleground. From spoofing to hijacking – if you touch packets, you need to know these attack vectors. Wrote a deep dive (yes, with Java code too): 🔗 svenruppert.com/2025/04/07/d... #dns #security #java #networking #devs

#Java Cryptography Architecture (JCA) - An Overview Provider-based crypto framework enables secure hashing, digital signatures, key management & more — all modular, extensible, and ready for real-world security needs. #JavaSecurity #Cryptography #JCA #SecureCoding svenruppert.com/2025/04/03/j...

Java - Gatherer: a powerful new way to control Stream aggregation! Inject, filter, finish early – even in parallel. No frameworks. Pure Java. Learn how it works #Java #StreamsAPI #Gatherer #JavaDev #Streams #java24 svenruppert.com/2025/04/02/r...

#Streams in #Java have been available since #Java8 and are still receiving new features up to #Java24. In this first blog post in the series on streams, I'll start with streams, provide an overview, and show the first steps with gatherers... svenruppert.com/2025/03/29/f...

long long time ago.. ;-) this was a cool shirt.. #atlassian #conference #java @svenpet.bsky.social

Boosting the Concurrency TornadoVM is an open-source framework that extends the Java Virtual Machine (JVM) to support hardware accelerators such as Graphics Processing Units (GPUs), Field-Programmable Gate Arrays (FPGAs), and ... #java #tornadovm #performance #jvm svenruppert.com/2024/11/23/tor

Cache Poisoning Attacks on Dependency Management Systems like Maven Cache #poisoning on #Maven Caches is a specific attack that targets how Maven #Caches manages packages and dependencies ... #Man-in-the-Middle #Cache … #java #security #securecoding #devsecops svenruppert.com/2024/11/13/cac

Exception article on our pure #Java build tool bld, this author really gets it! svenruppert.com/2024/09/26/b...

JUnit annotations in focus: The connection between @Test and @testable The annotations @Test and @testable have played an important role in the Java ecosystem regarding application testing. They are essential tools ... #java #tdd #junit5 svenruppert.com/2024/11/08/j...

The Risks of Mocking Frameworks: How Too Much Mocking Leads to Unrealistic Tests svenruppert.com/2024/11/05/t... #java #mockito #tdd

Das NIO-Paket von Java bietet robuste Tools zum Ändern der Datei- und Pfadnamen, mit denen Developer die Risiken durch Path Traversal (CWE-22) mindern können. #Softwareentwicklung

The History of Parallel Processing in Java: From Threads to Virtual Threads Since the early days of computer science, parallel processing has represented ... svenruppert.com/2024/11/01/t... #java #concurrency #streams #threads #virtual

Understanding TOCTOU (Time-of-Check to Time-of-Use) in the Context of CWE-377 - svenruppert.com/2024/10/07/u...

Bald auf meinem YT-Kanal - Winter - Overnighter bei -25C in schwedisch Lappland.. youtu.be/88IbeITAFw8

#Testcoverage in #Java , Compare #propertybased, #linecoverage and #mutation test coverage.. svenruppert.com/2024/05/31/c...

#maven and #security - #cache related #risks - svenruppert.com/2024/05/27/s...

Understanding and Mitigating CWE-416: Use After Free Vulnerabilities in Java - svenruppert.com/2024/05/17/c... #java #security #securecoding

Some basics about the Gauss-Krüger Coordinate System.. svenruppert.com/2024/05/16/b... #navigation #coordinates #wgs84 #bessel1841 #mercartor

🚀 Ready to supercharge your Java applications? Discover the latest in off-heap memory management with Java 21! From ByteBuffer to the new Foreign Function & Memory API, unlock unparalleled performance and efficiency. 🌟 #Java21 #HighPerformance #OffHeapMemory #JavaDev svenruppert.com/2024/05/15/c...

Unlock the secrets of your software! Dive into my latest blog post about logging svenruppert.com/2024/05/06/d... #logging #java #securecoding

What is a logbook, and how is it used in the field? svenruppert.com/2024/04/22/w... #hiking #hikingadventures #navigation #logbook #outdoors

The Hidden Dangers of Bidirectional Characters #security #java #securecoding svenruppert.com/2024/04/19/t...

Audio steganography is a technique for hiding information within an audio file so that only the intended recipient knows the hidden data's existence. This method .. #security #cybercrime #cybersecurity svenruppert.com/2024/04/17/a...

Uncover the clandestine world of hidden messages with our tantalizing teaser on steganography! Dive deep into the art of covert communication as we explore the ancient techniques and modern-day applications of concealing data within images, audio, and more... svenruppert.com/2024/03/28/b...

Kurzvorstellung des Expeditionsschlafsacks den ich im Einsatz habe von @carinthia -- D1200x -- // CC CarinthiaCommunity #carinthia youtu.be/oKL7j7OuADk

Exploration im arktischen Gebiet - schwedisch Lappland im Winter am Polarkreis youtu.be/IKdTiANlaNU

#winter #arctic #polarcircle #lapland #OutdoorAdventures #hikingadventures #landscapephotography