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Ron Pressler
Architect
Ron is the technical lead for OpenJDK's Project Loom, which seeks to add lightweight threads and continuations to the JDK.
Posts
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JEP targeted to JDK 27: 533: Structured Concurrency (7th Preview)
on May 11, 2026JDK 27Loom
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JEP targeted to JDK 26: 525: Structured Concurrency (6th Preview)
on November 24, 2025JDK 26Loom
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JEP targeted to JDK 26: 500: Prepare to Make Final Mean Final
on November 7, 2025JDK 26Core LibrariesIntegrity by Default
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JEP targeted to JDK 25: 505: Structured Concurrency (5th Preview)
on May 12, 2025JDK 25Loom
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JEP targeted to JDK 25: 512: Compact Source Files and Instance Main Methods
on May 6, 2025JDK 25Amber
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JEP Targeted to JDK 24: 498: Warn upon Use of Memory-Access Methods in sun.misc.Unsafe
on November 28, 2024JDK 24Integrity by Default
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JEP targeted to JDK 24: 495: Simple Source Files and Instance Main Methods (4th Preview)
on November 18, 2024JDK 24Amber
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JEP targeted to JDK 24: 472: Prepare to Restrict the Use of JNI
on October 16, 2024JDK 24Integrity by Default
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JEP 14: The Tip & Tail Model of Library Development
on October 5, 2024
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Integrity by Default #JVMLS
on September 12, 2024Integrity by Default
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JEP targeted to JDK 23: 471: Deprecate the Memory-Access Methods in sun.misc.Unsafe for Removal
on June 4, 2024JDK 23Integrity by DefaultPanama
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JEP targeted to JDK 23: 480: Structured Concurrency (Third Preview)
on June 2, 2024JDK 23Loom
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JEP targeted to JDK 23: 477: Implicitly Declared Classes and Instance Main Methods (Third Preview)
on May 28, 2024JDK 23Amber
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JEP targeted to JDK 22: 462: Structured Concurrency (Second Preview)
on December 11, 2023JDK 22ConcurrencyLoom
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JEP targeted to JDK 22: 458: Launch Multi-File Source-Code Programs
on December 8, 2023JDK 22Core Libraries
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JEP targeted to JDK 22: 463: Implicitly Declared Classes and Instance Main Methods (Second Preview)
on November 29, 2023JDK 22Amber
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JEP proposed to target JDK 21: 451: Prepare to Disallow the Dynamic Loading of Agents
on May 24, 2023JDK 21Integrity by DefaultServiceability
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JEP proposed to target JDK 21: 444: Virtual Threads
on April 9, 2023JDK 21Loom
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New candidate JEP: 436: Virtual Threads (2nd Preview)
on November 15, 2022Loom
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New candidate JEP: 437: Structured Concurrency (2nd Incubator)
on November 15, 2022Loom
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JEP proposed to target JDK 19: 428: Structured Concurrency (Incubator)
on May 26, 2022JDK 19Loom
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New candidate JEP: 428: Structured Concurrency (Incubator)
on May 18, 2022Loom
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New candidate JEP: 425: Virtual Threads (Preview)
on April 6, 2022Loom
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On Parallelism and Concurrency
on November 30, 2021Loom
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A new Loom EA build and a new structured concurrency API
on November 15, 2021Loom
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What Modules Are About
on September 10, 2021Modules
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What are they buildingand why? 6 questions for the top Java architects
on August 6, 2021AmberLoomPanamaValhalla
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Virtual Threads and Structured Concurrency with Ron Pressler
on May 31, 2021Loom
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Security and Sandboxing Post SecurityManager
on April 23, 2021Security
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On the Performance of User-Mode Threads and Coroutines
on August 7, 2020Loom
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Loom Q&A
on July 15, 2020ConcurrencyLoom
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State of Loom
on May 15, 2020ConcurrencyLoom
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Virtual Threads - A Short Note about Naming
on November 21, 2019Loom
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Project Loom Is Moving to GitHub
on August 23, 2019Loom
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Early Access Loom Builds
on July 29, 2019ConcurrencyLoom
Videos
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Principles of Memory Management in Java
[Youtube Player]
on September 4, 2026GCPerformance
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Integrity by Default
[Youtube Player]
on November 4, 2025Core LibrariesIntegrity by Default
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JVMLS - Continuations Under the Covers
[Youtube Player]
on August 26, 2023Loom
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The Age of Virtual Threads
[Youtube Player]
on October 13, 2022JDK 19Loom
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Why user-mode threads are (often) the right answer
[Youtube Player]
on October 26, 2021Loom
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Modern, Scalable Concurrency for the Java Platform
[Youtube Player]
on October 13, 2021Loom
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Project Loom: Modern Scalable Concurrency for the Java Platform
[Youtube Player]
on August 2, 2021Loom
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Project Loom: Scalable, Harmonious Concurrency for the Java Platform
[Youtube Player]
on November 11, 2020Loom
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Ask the Java Architects Panel
[Youtube Player]
on September 17, 2020
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Project Loom - Modern Scalable Concurrency for the Java Platform
[Youtube Player]
on September 17, 2020Loom
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Project Loom: Modern Scalable Concurrency for the Java Platform
[Youtube Player]
on July 29, 2020Loom
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Ask the Java Architect
[Youtube Player]
on November 7, 2019
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Loom: Helping Write Concurrent Applications on the Java Platform
[Youtube Player]
on November 6, 2019ConcurrencyLoom
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