Lower JDK version for modules not using ffm (#708)

Author: ktoso

.github/workflows/pull_request.yml

@@ -221,7 +221,7 @@ jobs:
           'JavaKitSampleApp',
           'JavaProbablyPrime',
           'JavaSieve',
-          'SwiftAndJavaJarSampleLib',
+          'SwiftAndJavaJarFFMSampleLib',
           'SwiftJavaExtractFFMSampleApp',
           'SwiftJavaExtractJNISampleApp',
         ]
@@ -249,7 +249,7 @@ jobs:
           'JavaKitSampleApp',
           'JavaProbablyPrime',
           'JavaSieve',
-          'SwiftAndJavaJarSampleLib',
+          'SwiftAndJavaJarFFMSampleLib',
           'SwiftJavaExtractFFMSampleApp',
           'SwiftJavaExtractJNISampleApp',
         ]

BuildLogic/src/main/kotlin/build-logic.java-common-conventions.gradle.kts

@@ -23,7 +23,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(25)
+        languageVersion = JavaLanguageVersion.of((gradle.extra.properties["swiftJavaJdk"] as? Int) ?: 25)
     }
 }
 

…iftAndJavaJarSampleLib/gradle.properties …/GradlePluginSampleApp/gradle.propertiesSamples/SwiftAndJavaJarSampleLib/gradle.properties renamed to Samples/GradlePluginSampleApp/gradle.properties Samples/SwiftAndJavaJarSampleLib/gradle.properties renamed to Samples/GradlePluginSampleApp/gradle.properties

@@ -5,7 +5,7 @@ import CompilerPluginSupport
 import PackageDescription
 
 let package = Package(
-  name: "SwiftAndJavaJarSampleLib",
+  name: "SwiftAndJavaJarFFMSampleLib",
   platforms: [
     .macOS(.v15),
     .iOS(.v18),

…es/SwiftAndJavaJarSampleLib/Example.java …SwiftAndJavaJarFFMSampleLib/Example.javaSamples/SwiftAndJavaJarSampleLib/Example.java renamed to Samples/SwiftAndJavaJarFFMSampleLib/Example.java Samples/SwiftAndJavaJarSampleLib/Example.java renamed to Samples/SwiftAndJavaJarFFMSampleLib/Example.java

@@ -32,7 +32,7 @@ repositories {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(25))
+        languageVersion.set(JavaLanguageVersion.of((gradle.extra.properties["swiftJavaJdk"] as? Int) ?: 17))
     }
 }
 
@@ -85,13 +85,13 @@ tasks.jar.configure {
 }
 
 base {
-    archivesName = "swift-and-java-jar-sample-lib"
+    archivesName = "swift-and-java-jar-ffm-sample-lib"
 }
 
 publishing {
     publications {
         create<MavenPublication>("maven") {
-            artifactId = "swift-and-java-jar-sample-lib"
+            artifactId = "swift-and-java-jar-ffm-sample-lib"
             from(components["java"])
         }
     }