Java 27 released with G1 garbage collector as default

Oracle announces the general availability of OpenJDK 27 and Java 27.

Published 7h2 sources✓ ConfirmedImportant

≈ 16sSpeed

The fact

The G1 garbage collector becomes the default choice for all configurations.

This release marks a step in memory performance optimization.

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Auto-synthesis from 2 media sources · identified on September 15, 2026