Can Gen Liberty applications be built/compiled using Java JDK 17 or 21

Products

• Gen

Issue/Introduction

Referencing the new Gen 8.6 support for the Liberty Application Server.
Per the page Gen™ 8.6 >Technical Requirements > Third-Party Software Version and section "Application Servers".
It states that Gen 8.6 support for Open Liberty and WebSphere Liberty includes Java JRE versions 8, 11, 17 and 21.
Does that also mean the Build Tool can use later Java JDK 17 or 21 to build/compile the Java application?

Environment

Gen Java applications targeting Liberty Application Server.

Resolution

February 12, 2026 update

With the release of Gen 8.6 Build Tool PTF BTN86406/LU19288  the Build Tool now supports JDK versions 17, 21 & 25 per the "Compilers" section of page Gen™ 8.6 >Technical Requirements > Third-Party Software Version:




Also per the "Application Servers" section of the same page, support for Open Liberty and WebSphere Liberty is now expanded to include Java JRE version 25.