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Dr Heinz Kabutz
Heinz is the mastermind behind The Java Specialists' Newsletter. He has a PhD in Computer Science. Heinz has programmed significant portions of several large Java applications and has taught Java to thousands of professional programmers. He is a regular speaker at all the major Java conferences.
Heinz was chosen as a Java Champion by Sun Microsystems, the inventors of Java, for his work in advancing Java.
Heinz presents our Java training courses anywhere in the world, either in person or via remote teaching technologies. He is the author of all our courses, including Java Specialist Master, Design Patterns and Concurrency Specialist Courses.
Heinz is fluent in English and German.
Java Community Lifetime Achievement
Awarded by Sharat Chander (Oracle Senior Director, Product Management & Developer Engagement) at Devoxx UK on the 9th May 2025.
Java Talks by Dr Heinz M. Kabutz
213 talks in total
2025
7 talks
- Devoxx UK in London, UK: The Hidden Art of Thread-Safe Programming - Exploring java.util.concurrent
- GeeCON in Krakow, Poland: The Hidden Art of Thread-Safe Programming - Exploring java.util.concurrent
- JAX in Mainz, Germany: IntelliJ Super Productivity in 45 Minutes | The Hidden Art of Thread-Safe Programming - Exploring java.util.concurrent
- JChampionsConf in Virtual, Online: Translating a Cretan Book using Java and ChatGPT API
- jBiltong in Virtual, South Africa: IntelliJ Super Productivity in 45 Minutes
- jPrime in Sofia, Bulgaria: The Hidden Art of Thread-Safe Programming - Exploring java.util.concurrent
2024
5 talks
- Devoxx Greece in Athens, Greece: Translating a Cretan Book using Java and ChatGPT API
- Voxxed Days in Ioannina, Greece: Translating a Cretan Book using Java and ChatGPT API
- WJAX in Munich, Germany: IntelliJ Super Productivity in 45 Minutes | Prepare for what *Loom*s ahead | Translating a Cretan Book using Java and ChatGPT API
2023
5 talks
- Amsterdam JUG in Amsterdam, the Netherlands: IntelliJ Super Productivity in 45 Minutes
- Devoxx Belgium in Antwerp, Belgium: IntelliJ Super Productivity in 45 Minutes
- Devoxx Greece in Athens, Greece: Prepare for what *Loom*s ahead
- JChampionsConf in Virtual, Online: IntelliJ Super Productivity in 45 Minutes
- JPrime in Sofia, Bulgaria: IntelliJ Super Productivity in 45 Minutes
2022
6 talks
- Devoxx Ukraine in Online, Ukraine: Prepare for what *Loom*s ahead
- Devstaff in Heraklion, Greece: IntelliJ Wizardry
- JAX in Mainz Online, Germany: IntelliJ Super Productivity in 45 Minutes
- JChampionsConf in Virtual, Online: Prepare for what Looms ahead
- JUG Manchester in Manchester, UK: Deep-Dive into Java's Striped64
- JUG in Thessalonki, Greece: Prepare for what *Loom*s ahead
2021
8 talks
- Devoxx Ukraine in Kyiv, Ukraine: Prepare for what *Loom*s ahead
- FOSDEM in Online, Belgium: Dynamic Proxies in Java
- JAX London in London, UK: Prepare for what *Loom*s ahead
- JAX in Mainz Online, Germany: Prepare for what *Loom*s ahead
- JHUG in Athens, Greece: Prepare for what *Loom*s ahead
- JUG Cyprus in Online, Cyprus: IntelliJ Super Productivity in 45 Minutes
- Skillsmatter in Online, UK: Prepare for what Looms ahead
- WJAX in Munich Online, Germany: Prepare for what *Loom*s ahead
2020
15 talks
- CH JUG in Zürich, Switzerland: Dynamic Proxies in Java
- Devoxx Ukraine in Virtual, Ukraine: Thread Safety with Phaser, StampedLock and VarHandle
- JAX Online in Mainz, Germany: Dynamic Proxies in Java
- JConf Peru in Virtual, Peru: Thread Safety with Phaser, StampedLock and VarHandle
- JDConf Microsoft in Virtual, USA: Prepare for what Looms ahead
- JFokus Brown Bag Lunch in Virtual, Sweden: Prepare for what *Loom*s ahead
- JUG in Cape Town, South Africa: Enough java.lang.String to Hang Ourselves ...
- JUG in Nairobi, Kenya: Dynamic Proxies in Java
- JUG in Niš, Serbia: Enough java.lang.String to Hang Ourselves ...
- JVM Community Virtual Conference in Lagos, Nigeria: Dynamic Proxies in Java
- Jconf.Dev 2020 in Chicago, USA: Dynamic Proxies in Java
- JokerConf in Virtual, Russia: Thread Safety with Phaser, StampedLock and VarHandle
- Montreal JUG in Montreal, Canada: Dynamic Proxies in Java
- Oracle Groundbreakers Yatra in Virtual, India: Dynamic Proxies in Java
- jOnConf in Virtual, Bulgaria: Dynamic Proxies in Java
2019
19 talks
- Devoxx UK in London, England: Enough java.lang.String to Hang Ourselves ...
- GeeCON in Krakow, Poland: Enough java.lang.String to Hang Ourselves ... | Thread Safety with Phaser, StampedLock and VarHandle
- GeeCON in Prague, Czech Republic: Enough java.lang.String to Hang Ourselves ... | Inspired to Code
- Geekout in Tallinn, Estonia: Enough java.lang.String to Hang Ourselves ... | Thread Safety with Phaser, StampedLock and VarHandle
- JAX in Mainz, Germany: Parallel Divide and Conquer with CompletableFutures | Strings in Java - Verstrickt nochmal!
- JPrime in Sofia, Bulgaria: Enough java.lang.String to Hang Ourselves ...
- JUG in A Coruña, Spain: Parallel Divide and Conquer with CompletableFutures
- JUG in Amsterdam, The Netherlands: Enough java.lang.String to Hang Ourselves ...
- JUG in Hannover, Germany: Parallel Divide and Conquer with CompletableFutures | Thread Safety with Phaser, StampedLock and VarHandle
- JUG in The Hague, The Netherlands: Mind Hacking for Health | Thread Safety with Phaser, StampedLock and VarHandle
- Java Summit in Bucharest, Romania: Thread Safety with Phaser, StampedLock and VarHandle
- Oracle Code Online in Virtual: Thread Safety with Phaser
- Voxxed Milano in Milano, Italy: Enough java.lang.String to Hang Ourselves ...
2018
8 talks
- GOTO in Amsterdam, The Netherlands: Enough java.lang.String to Hang Ourselves ...
- JUG in Skopje, FYRO Macedonia: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JUG in Thessaloniki, Greece: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Oracle Code One in San Francisco, USA: Enough java.lang.String to Hang Ourselves ... | Thread Safety with Phaser, StampedLock and VarHandle
- Voxxed in Athens, Greece: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Voxxed in Thessaloniki, Greece: Enough java.lang.String to Hang Ourselves ...
- Øredev in Malmö, Sweden: Thread Safety with Phaser, StampedLock and VarHandle
2017
31 talks
- Allegro Tech Talks in Poznan, Poland: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- CTJC in Cape Town, South Africa: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Devoxx Belgium in Antwerp, Belgium: Safely Shoot Yourself in the Foot with Java 9
- Devoxx UK in London, UK: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker | Using Java 8 Lambdas and StampedLock to Manage Thread Safety
- Infoshare in Gdansk, Poland: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- J-Fall in Ede, The Netherlands: Safely Shoot Yourself in the Foot with Java 9
- J-Spring in Amsterdam, The Netherlands: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JAX Finance in London, UK: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker | Using Java 8 Lambdas and StampedLock to Manage Thread Safety
- JAX London in London, UK: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JAX in Mainz, Germany: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker | Using Java 8 Lambdas and StampedLock to Manage Thread Safety
- JDD in Krakow, Poland: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JFokus in Stockholm, Sweden: Java Concurrency Live(li)ness Lab Workshop | Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JForum in Stockholm, Sweden: Using Java 8 Lambdas and StampedLock to Manage Thread Safety
- JPrime in Sofia, Bulgaria: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JUG in Darmstadt, Germany: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JUG in Graz, Austria: Safely Shoot Yourself in the Foot with Java 9
- JUGBD in Bangladesh: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- JavaDay in Kiev, Ukraine: Safely Shoot Yourself in the Foot with Java 9
- JavaZone in Oslo, Norway: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Riga Dev Days in Riga, Latvia: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Tech Talks Beach Edition in Burgas, Bulgaria: Safely Shoot Yourself in the Foot with Java 9
- VJUG24 in VJUG, Online: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Voxxed CERN in Geneva, Switzerland: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- Voxxed Zurich in Zurich, Switzerland: Using Java 8 Lambdas and StampedLock to Manage Thread Safety
- Voxxed in Bucharest, Romania: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker
- WJAX in Munich, Germany: Turbo Charge CPU Utilization in ForkJoin Using the ManagedBlocker | Using Java 8 Lambdas and StampedLock to Manage Thread Safety
2016
12 talks
- Devstaff in Heraklion, Crete: The Secrets of Concurrency
- ECESCON9 in Chania, Greece: Finding and Solving Java Deadlocks - Heinz Kabutz Workshop
- GeeCON in Prague, Czech Republic: Dirty Hacks With Java Reflection (includes one or two useful hints)
- JAX Finance in London, UK: Using Java Reflection to Debug Performance Issues
- JUG in Gdansk, Poland: Dirty Hacks With Java Reflection (includes one or two useful hints)
- JUG in Graz, Austria: Dirty Hacks With Java Reflection (includes one or two useful hints)
- JUG in Ljubljana, Slovenia: Dirty Hacks With Java Reflection (includes one or two useful hints)
- JUG in Malaga, Spain: Using Java Reflection to Debug Performance Issues
- JUG in Warsaw, Poland: Using Java Reflection to Debug Performance Issues
- JUG in Zurich, Switzerland: Using Java Reflection to Debug Performance Issues
- NYC Java Meetup in New York, USA: Using Java Reflection to Debug Performance Issues
- Technical University of Crete, Greece: Using Java Reflection to Debug Performance Issues
2015
14 talks
- DEVit in Thessaloniki, Greece: Live Productive Coder
- GeeCON JUG in Poznan, Poland: The Live Reflection Madness
- Istanbul Tech Talks in Istanbul, Turkey: Java Concurrency and Non-blocking IO
- JAX Finance in London, UK: Live Productive Coder | Ripping Apart Java 8 Parallel Streams
- JAX in Mainz: Lambdas And Mixins
- JDK.IO in Copenhagen, Denmark: The Live Reflection Madness
- JPrime in Sofia, Bulgaria: The Secrets of Concurrency
- JUG in Cologne, Germany: The Secrets of Concurrency
- JUG in Graz, Austria: The Secrets of Concurrency
- JUG in Manchester, UK: The Secrets of Concurrency
- VJUG in Virtual, Online: The Live Reflection Madness
- WJAX in Munich, Germany: The Secrets of Concurrency | Using Lambdas to Write Mixins in Java 8
2014
13 talks
- Devoxx Belgium in Antwerp, Belgium: Using Lambdas to Write Mixins in Java 8
- JAX in London, UK: Reflection Madness | Threading Bugs War Stories
- JDK.IO in Aarhus, Denmark: Java Concurrency and Non-blocking IO
- JDK.IO in Copenhagen, Denmark: Java Concurrency and Non-blocking IO
- JEEConf in Ukraine: Reflection Madness
- Java Forum in Stuttgart, Germany: Java NIO, non-blockierendes IO und Concurrency
- JavaDay in Athens, Greece: Using Lambdas to Write Mixins in Java 8
- JavaLand in Germany: Java 8 From Smile To Tears - Emotional StampedLock | Threading Bugs War Stories
- PerfUG in Paris, France: Phaser And StampedLock
- TopConf in Tallinn, Estonia: Lambdas And Mixins | Reflection Madness
2013
7 talks
- CONFESS in Vienna, Austria: Phaser And StampedLock | The Secrets of Concurrency
- JAX in Mainz, Germany: Phaser And StampedLock
- JFokus in Stockholm, Sweden: Phaser And StampedLock
- JavaZone in Oslo, Norway: Phaser And StampedLock
- WJAX in Munich, Germany: Emotional StampedLock | Reflection Madness
2012
7 talks
- Codemotion in Madrid, Spain: Multi-threaded Performance and Scalability
- Devoxx France in Paris, France: Deadlock Victim
- ExitCertified in Ottawa, Canada: Finding and Solving Deadlocks in Multi-Threaded Java Code Workshop
- JAX in Mainz, Germany: Multi-threaded Performance and Scalability
- JavaOne HOL6500 in San Francisco, USA: Finding and Solving Java Deadlocks Hands-on Lab
- Open Coffee in Chania, Greece: Computer Consulting
- WJAX in Munich, Germany: Multi-threaded Performance and Scalability
2011
6 talks
- GeeCON in Krakow, Poland: Productive Coder | Reflection Madness
- JFokus in Stockholm, Sweden: 10 Years of The Java Specialists' Newsletter | The Secrets of Concurrency
- Meet the Experts via Webinar: Nebenlaeufigkeit und Java
- Zero Turnaround Vacation in Chania, Greece: How To Think
2010
10 talks
- Devoxx Belgium in Antwerp, Belgium: 10 Years of The Java Specialists' Newsletter | Reflection Madness | jpatterns.org
- JUG in Paris, France: The Secrets of Concurrency
- JavaOne in San Francisco, USA: 10 Years of The Java Specialists' Newsletter | Java Concurrent Animated
- NYC Java Meetup in New York, USA: 10 Years of The Java Specialists' Newsletter
- RheinJUG in Duesseldorf, Germany: 10 Years of The Java Specialists' Newsletter
- Sun Microsystems in Columbia, USA: The Secrets of Concurrency
- Technical University of Crete in Chania, Greece: The Secrets of Concurrency
2009
7 talks
- JUG in Karlsruhe, Germany: The Secrets of Concurrency
- JUG in Montreal, Canada: The Secrets of Concurrency
- Java Meetup in New York, USA: Reflection Madness
- JavaSIG in New York, USA: The Secrets of Concurrency
- Javazone in Oslo, Norway: Reflection Madness
- Meet the Experts in Solingen, Germany: The Secrets of Concurrency
- Sun Microsystems in San Jose, USA: The Secrets of Concurrency
2008
5 talks
- EWIT in London, UK: Java Specialists in Action | Productive Coder
- JHUG in Athens, Greece: Un^H^HSelf-Employed
- Jazoon in Zurich, Switzerland: The Secrets of Concurrency
- Sun Developer Day in Athens, Greece: The Secrets of Concurrency
2007
11 talks
- EWIT in London, UK: The Secrets of Concurrency
- J-Fall in Bussum, The Netherlands: The Secrets of Concurrency
- JHUG in Athens, Greece: Productive Coder | The Secrets of Concurrency
- JUG in Heraklion, Greece: Productive Coder
- NYC Java Meetup in New York, USA: The Secrets of Concurrency
- Sun Tech Days in Athens, Greece: Java Specialists in Action
- Sun Tech Days in Frankfurt, Germany: The Secrets of Concurrency
- Sun Tech Days in London, UK: Java Specialists in Action
- TheServerSide Symposium in Barcelona, Spain: Productive Coder | The Secrets of Concurrency
2006
10 talks
- JHUG in Athens, Greece: Essentials of Java Performance Tuning
- JUG Cologne in Cologne, Germany: Productive Coder
- JavaPolis in Antwerp, Belgium: Java Specialists In Action | Why so Slow Workshop
- JavaZone in Oslo, Norway: Java Specialists In Action
- Sun Tech Days in Johannesburg, South Africa: Essentials of Java Performance Tuning
- TheServerSide Java Symposium in Barcelona, Spain: Java Specialists in Action | Productive Coder
- TheServerSide Java Symposium in Las Vegas, USA: Java Specialists in Action | Productive Coder
2005
3 talks
- Compuware MDA Conference in Johannesburg, South Africa: Design Patterns - The Timeless Way of Coding
- TheServerSide Java in Action in Orlando, USA: Java Specialists In Action
- University of Crete in Heraklion, Greece: Design Patterns - The Timeless Way of Coding
2004
2 talks
- FLOSS Developer Roadshow in Cape Town, South Africa: Design Patterns - The Timeless Way of Coding
- University of Technology in Mauritius: Design Patterns - The Timeless Way of Coding
2003
2 talks
- JUG in Cape Town, South Africa: Design Patterns - The Timeless Way of Coding
- JUG in Durban, South Africa: Design Patterns - The Timeless Way of Coding
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