compatibility.fyi
← Back to Apache Tomcat

Source-backed version compatibility

Apache Tomcat Websocket API Version Compatibility

Apache Tomcat Websocket API version compatibility. Apache Tomcat 11.0 implements Jakarta WebSocket 2.2.

Full Apache Tomcat matrixJSON data
3Project versions
3Documented ranges
2026-07-23Last verified

Quick answer

Websocket API compatibility by Apache Tomcat version

Apache Tomcat version

11.0

Documented Websocket API versions

2.2

Apache Tomcat 11.0 implements Jakarta WebSocket 2.2.

high confidence · verified 2026-07-23 · implemented web specification

Apache Tomcat version

10.1

Documented Websocket API versions

2.1

Apache Tomcat 10.1 implements Jakarta WebSocket 2.1.

high confidence · verified 2026-07-23 · implemented web specification

Apache Tomcat version

9.0

Documented Websocket API versions

1.1

Apache Tomcat 9.0 implements the Java API for WebSocket 1.1 from Java EE 8.

high confidence · verified 2026-07-23 · implemented web specification

Primary evidence

Sources

Every range above is backed by upstream documentation, tagged source, release notes, or another project-owned primary source.

  1. Apache Tomcat Version and Specification MatrixAccessed 2026-07-23