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Inside Java

News and views from members of the Java team at Oracle

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Stefan Johansson

Oracle Alum

Posts

JDK 21: The GCs keep getting better on December 14, 2023JDK 21 GC Performance
Hazelcast Jet on Generational ZGC on November 7, 2023JDK 21 GC Performance
GC progress from JDK 8 to JDK 17 on November 24, 2021JDK 17 GC Performance
Large pages and Java on May 19, 2021JDK 17 GC Performance
Improving G1 out-of-the-box performance on April 16, 2020JDK 15 JDK 14 GC Performance

Videos

Garbage Collection in Java: Choosing the Correct Collector on November 29, 2025GC
Garbage Collection in Java: The Performance Benefits of Upgrading on May 14, 2025GC
Garbage Collection in Java - The progress since JDK 8 on February 15, 2025GC
Reducing P99 Latencies with Generational ZGC on October 21, 2023GC Performance
G1: To Infinity and Beyond on October 11, 2021JDK 17 GC Performance
G1: To infinity and beyond on February 1, 2020JDK 14 GC Performance