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Class File 55.0 favicon All About Class File 55.0
Class File 55.0 • 2018 • Java 11
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55.0LTSModern baseline

All About Class File 55.0

Class file 55.0 is a practical production anchor because Java 11 became the first LTS in the new rapid-release cadence.

Binary milestone

Class File 55.0

Class file 55.0 is a practical production anchor because Java 11 became the first LTS in the new rapid-release cadence.

55.0LTSModern baseline
Compatibility meaning

Why the version number matters

The class file version is the binary compatibility signal that tells tooling and runtimes which generation of compiled Java bytecode they are dealing with.

This class file milestone aligns with an LTS anchor, so it matters both for binary compatibility and for long-term operational baselines.

javap -verbose MyClass.class
# look for: major version 55
Release context

What was happening around this milestone

LTS

Class file 55.0 is a practical production anchor because Java 11 became the first LTS in the new rapid-release cadence.

Related pages

Continue through binary and runtime history

Common Class File Return to the class file timeline and compare this version with adjacent milestones. Common Java See the source-language side of the Java release associated with this class file version. Common JLS Compare source-language specification changes with binary-format evolution. Common JDK Use the platform view when you want to connect bytecode changes to tooling and runtime packaging.