jdk17: note that version 17.0.13+ is not available via MacPorts (#26260)

java/jdk17/Portfile

@@ -2,9 +2,10 @@
 
 PortSystem       1.0
 
-name             jdk17
+set feature 17
+name             jdk${feature}
 categories       java devel
-maintainers      {breun.nl:nils @breun} openmaintainer
+maintainers      nomaintainer
 platforms        darwin
 # This port uses prebuilt binaries; 'NoMirror' makes sure MacPorts doesn't mirror/distribute these third-party binaries
 license          NFTC NoMirror
@@ -14,15 +15,17 @@ universal_variant no
 supported_archs  x86_64 arm64
 
 # https://www.oracle.com/java/technologies/downloads/#jdk17-mac
-version      17.0.12
+version      ${feature}.0.12
 revision     0
 
-description  Oracle Java SE Development Kit 17
+description  Oracle Java SE Development Kit ${feature}
 long_description Java Platform, Standard Edition Development Kit (JDK). \
     The JDK is a development environment for building applications and components using the Java programming language. \
-    This software is provided under the Oracle No-Fee Terms and Conditions (NFTC) license (https://java.com/freeuselicense).
+    This software is provided under the Oracle No-Fee Terms and Conditions (NFTC) license (https://java.com/freeuselicense). \
+    Oracle JDK ${feature}.0.13 and later are only available under the OTN license and therefore cannot be made available via MacPorts. \
+    If you require an up-to-date JDK ${feature}, consider installing the 'openjdk${feature}' or another openjdk${feature}-* port instead.
 
-master_sites https://download.oracle.com/java/17/archive/
+master_sites https://download.oracle.com/java/${feature}/archive/
 
 if {${configure.build_arch} eq "x86_64"} {
     distname     jdk-${version}_macos-x64_bin
@@ -42,7 +45,7 @@ homepage     https://www.oracle.com/java/
 
 livecheck.type      regex
 livecheck.url       https://www.oracle.com/java/technologies/downloads/
-livecheck.regex     Java SE Development Kit (17\.\[0-9\.\]+)
+livecheck.regex     JDK Development Kit (${feature}\.\[0-9\.\]+) downloads
 
 use_configure    no
 build {}