Support Java 25

[anandjaisy]

Does Jbang support Java 25, when I downloaded the jbang using sdkman, java 17 has been downloaded, even though in my system I already had java 25

[quintesse]

It definitely does, @anandjaisy! But it depends if it can find it. By default JBang will only use Jdks that a) it finds in the PATH or the one pointed at by JAVA_HOME or b) the ones it installs itself.

Wanted to tell you that you could enable additional providers, like sdkman, which will allow JBang to pick up on Jdks installed by external applications. Unfortunately it seems we have a regression: #2278 and you won't be able to do that until we fix that.

[maxandersen]

It is As @quintesse write.

Just one clarification -
Jbang should only be downloading Java 17 if no Java (8 or higher) is not found in PATH or JAVA_HOME set - and providers won't affect that on first install as there we only have the bootstrap script to lookup a matching Java and here only path and Java_home counts.

[sgindeed]

I totally agree with @quintesse and @maxandersen. JBang does support running scripts with newer Java versions like Java 25, but the version installed via SDKMAN is independent of the JDKs already on your system. SDKMAN installs its own Java version if JBang requires a minimum JDK or if no default Java is set in the SDKMAN environment, which is why it pulled Java 17. JBang itself doesn’t force you to use that version—you can tell it to use your system’s Java 25 by setting your JAVA_HOME or running JBang with the Java 25 binary on your PATH. In short, JBang works fine with Java 25, but SDKMAN installs Java 17 by default unless you explicitly switch JBang to use a different JDK.