fix: add support for non-major Java versions to be used as toolchains

.github/workflows/module.build.yml

@@ -274,11 +274,43 @@ jobs:
             labs: false
             skip: false
 
-          # Test: Java Toolchain
-          - label: Java Toolchain
+          # Test: Java Toolchain 17
+          - label: Java Toolchain 17
             target: sample
             action: build
-            directory: "./example/integration_tests/java-toolchain"
+            directory: "./example/integration_tests/java-toolchain-17"
+            labs: false
+            skip: false
+
+          # Test: Java Toolchain 20
+          - label: Java Toolchain 20
+            target: sample
+            action: build
+            directory: "./example/integration_tests/java-toolchain-20"
+            labs: false
+            skip: false
+
+          # Test: Java Toolchain 21
+          - label: Java Toolchain 21
+            target: sample
+            action: build
+            directory: "./example/integration_tests/java-toolchain-21"
+            labs: false
+            skip: false
+
+          # Test: Java Toolchain 22
+          - label: Java Toolchain 22
+            target: sample
+            action: build
+            directory: "./example/integration_tests/java-toolchain-22"
+            labs: false
+            skip: false
+
+          # Test: Java Toolchain 23
+          - label: Java Toolchain 23
+            target: sample
+            action: build
+            directory: "./example/integration_tests/java-toolchain-23"
             labs: false
             skip: false
 

example/integration_tests/java-toolchain-17/sample/Main.java

@@ -0,0 +1,5 @@
+public class Main {
+    public static void main(String args[]) {
+        System.out.println("Hello, GraalVM: " + Runtime.version());
+    }
+}

example/integration_tests/java-toolchain-20/.bazelrc

@@ -0,0 +1,8 @@
+build --extra_toolchains=@graalvm//:toolchain
+build --extra_toolchains=@graalvm//:toolchain_gvm
+build --extra_toolchains=@graalvm//:bootstrap_runtime_toolchain
+
+build --tool_java_language_version=20
+build --tool_java_runtime_version=graalvm_20
+build --java_language_version=20
+build --java_runtime_version=graalvm_20

example/integration_tests/java-toolchain-20/.bazelversion

@@ -0,0 +1 @@
+7.0.0

example/integration_tests/java-toolchain-20/.gitignore

@@ -0,0 +1 @@
+bazel-*

example/integration_tests/java-toolchain-20/MODULE.bazel

@@ -0,0 +1,6 @@
+###############################################################################
+# Bazel now uses Bzlmod by default to manage external dependencies.
+# Please consider migrating your external dependencies from WORKSPACE to MODULE.bazel.
+#
+# For more details, please check https://github.com/bazelbuild/bazel/issues/18958
+###############################################################################