A New Model for Java Object Initialization #JVMLS

Presented by *Dan Smith* - Senior Developer (Java Platform Group - Oracle) during the *JVM* *Language* *Summit* (August 2024 - Santa Clara, CA). _*Improving Field Initialization*_ _This video shows how we can co-evolve the Java language, JVM, and common coding practices to improve how fields are initialized, providing stronger guarantees about their contents._ _Goals include_ _1) eliminating the need for default values;_ _2) ensuring final fields cannot be observed to mutate; and_ _3) avoiding early publication of uninitialized objects._ _In Amber, Flexible Constructor Bodies allow Java code to initialize fields earlier than it could before, and in Valhalla, value classes have repurposed the ACC_STRICT flag to mark fields that support stronger guarantees._ Make sure to check the https://www.youtube.com/playlist?list=PLX8CzqL3ArzUEYnTa6KYORRbP3nhsK0L1 playlist. *Resources* • JEP Draft - Null-Restricted and Nullable Types (Preview) ➤ https://bugs.openjdk.org/browse/JDK-8303099 • JEP Draft - Value Classes and Objects (Preview) ➤ https://openjdk.org/jeps/401 • Valhalla - Where Are We? ➤ https://youtu.be/IF9l8fYfSnI • Project Valhalla ➤ https://openjdk.org/projects/valhalla/ • Inside Java ➤ https://inside.java/tag/valhalla • JVMLS ➤ https://openjdk.org/projects/mlvm/jvmlangsummit/ • OpenJDK ➤ https://openjdk.org *Tags* #Java #OpenJDK #Valhalla