Stuart Marks - Consulting Member of Technical Staff

Stuart Marks is a Consulting Member of Technical Staff in the Java Platform Group at Oracle. He is currently working on a variety of JDK core libraries projects, including Collections, Lambdas, and Streams, as well as improving test quality and performance. As his alter ego “Dr. Deprecator” he also works on the Java SE deprecation mechanism. He has previously worked on JavaFX and Java ME at Sun Microsystems. He has over 25 years of software platform product development experience in the areas of window systems, interactive graphics, and mobile and embedded systems. Stuart holds a Master’s degree in Computer Science and a Bachelor’s degree in Electrical Engineering from Stanford University.

Posts

• Tutorial: Choosing the Right Implementation Between ArrayList and LinkedList on March 26, 2025 Core Libraries
• Detoxifying the JDK Source Code on December 13, 2024 JDK 24 Security
• My Favorite JDK 21 Feature: Javadoc Search URL on September 25, 2023 JDK 21 Core Libraries
• Quality Outreach Heads-up - JDK 21: Sequenced Collections Incompatibilities on May 12, 2023 Core Libraries JDK 21
• JEP proposed to target JDK 21: 431: Sequenced Collections on March 3, 2023 Core Libraries JDK 21
• The Importance of Writing Stuff Down on February 23, 2023 Core Libraries
• New candidate JEP: 431: Sequenced Collections on October 11, 2022 Core Libraries
• Why Write an Empty finalize() Method? on April 28, 2022 Core Libraries Security JDK 18
• Why is the `finalize()` method deprecated? on November 3, 2021 Core Libraries
• New candidate JEP: 421: Deprecate Finalization for Removal on November 1, 2021 Core Libraries
• ReversibleCollection proposal on April 16, 2021 Core Libraries
• RFE: Add Stream.toList() method on November 3, 2020 Core Libraries
• Incompatibilities with JDK 15 CharSequence.isEmpty on September 22, 2020 JDK 15 Java Language Core Libraries
• Programmer's Guide To Text Blocks on August 5, 2020 Amber JDK 15
• Scanner is a Weird but Useful Beast on April 14, 2020 Core Libraries
• Local Variable Type Inference FAQ on August 30, 2019 Amber
• Jakarta EE and Removal of Deprecated APIs on May 23, 2019
• Processing Large Files in Java on January 11, 2019 Performance
• Local Variable Type Inference: Style Guidelines on March 22, 2018 Amber
• Deprecation of Object.finalize() on April 17, 2017
• There is no such thing as a fail-safe Iterator in Java on July 27, 2016

Videos

• "Just Make All Exceptions Unchecked" - Live Q&A from Devoxx on October 9, 2025 Java Language
• Sequenced Collections - Deep Dive with the Expert on April 12, 2025 Core Libraries
• Java's Fraught Relationship with Cyclic Object Graphs on October 15, 2024 Core Libraries GC
• Future of Collections with Stuart Marks - Live Q&A at Devoxx BE on October 8, 2024 Core Libraries
• Java Architects Answer Your Questions on October 26, 2023 Core Libraries Client Loom
• Java Language Futures, Spring 2023 Edition on April 6, 2023 Amber JDK 20
• Collections Refueled on September 17, 2020 Core Libraries
• Java Languages Features for Improved Productivity on April 1, 2020 Amber
• Why We Hate Java Serialization on November 7, 2019 Security
• Ask the Java Architect on November 7, 2019
• Collections Corner Cases on September 18, 2019 Core Libraries
• Comparison Method Violates its General Contract! on November 8, 2017
• Collections Refueled on April 14, 2017
• Optional - The Mother of all Bikesheds on April 11, 2017

Podcasts

• Episode 39 “Deprecations & Removals” with Stuart Marks on July 28, 2025 Core Libraries Security
• Episode 31 “Sequenced Collections” with Stuart Marks on April 25, 2023 JDK 21 Core Libraries
• Episode 20 “Java 17 is Here! Part 2” on September 27, 2021 JDK 17 Amber Core Libraries
• Episode 11 “How to contribute to OpenJDK” with Stuart Marks and Jesper Wilhelmsson on January 29, 2021