https://community.qlik.com/t5/Installing-and-Upgrading/Move-from-JDK-8-to-JDK-21/m-p/2555183#M12901 <P>We're planning to update our servers from JDK 8 to JDK 21, and I'd like to know if this is safe for Talend Studio 7.3.1 before we do it.</P><P>From the official docs, JDK 21 doesn't appear listed as compatible with 7.3.x — most Talend versions only added proper support for newer JDKs starting with later 8.0.x releases.</P><P>Questions:</P><OL><LI>Does anyone run 7.3.1 Jobs on JDK 21 successfully, officially or not?</LI><LI>Do we need to upgrade Talend Studio first, or can we just swap the JDK?</LI><LI>Any common breaking changes to expect (removed APIs, TLS defaults, etc.)?</LI></OL><P>Thanks for any pointers or shared experience.</P> Tue, 25 Aug 2026 10:30:31 GMT portix 2026-08-25T10:30:31Z https://community.qlik.com/t5/Installing-and-Upgrading/Move-from-JDK-8-to-JDK-21/m-p/2555183#M12901 <P>We're planning to update our servers from JDK 8 to JDK 21, and I'd like to know if this is safe for Talend Studio 7.3.1 before we do it.</P><P>From the official docs, JDK 21 doesn't appear listed as compatible with 7.3.x — most Talend versions only added proper support for newer JDKs starting with later 8.0.x releases.</P><P>Questions:</P><OL><LI>Does anyone run 7.3.1 Jobs on JDK 21 successfully, officially or not?</LI><LI>Do we need to upgrade Talend Studio first, or can we just swap the JDK?</LI><LI>Any common breaking changes to expect (removed APIs, TLS defaults, etc.)?</LI></OL><P>Thanks for any pointers or shared experience.</P> Tue, 25 Aug 2026 10:30:31 GMT https://community.qlik.com/t5/Installing-and-Upgrading/Move-from-JDK-8-to-JDK-21/m-p/2555183#M12901 portix 2026-08-25T10:30:31Z