Support multi-field Java versions like 18.0.1.1

README.md

@@ -104,6 +104,7 @@ steps:
 The `java-version` input supports an exact version or a version range using [SemVer](https://semver.org/) notation. The values below are examples, not an exhaustive list:
 - major versions, such as: `8`, `11`, `16`, `17`, `21`, `25`
 - more specific versions: `8.0.282+8`, `8.0.232`, `11.0`, `11.0.4`, `17.0`
+- multi-field Java versions (JEP 322), such as: `11.0.9.1`, `18.0.1.1`
 - early access (EA) versions: `15-ea`, `15.0.0-ea`
 
 #### Supported distributions

__tests__/distributors/base-installer.test.ts

@@ -748,7 +748,11 @@ describe('normalizeVersion', () => {
     ['11.0', {version: '11.0', stable: true}],
     ['11.0.10', {version: '11.0.10', stable: true}],
     ['11-ea', {version: '11', stable: false}],
-    ['11.0.2-ea', {version: '11.0.2', stable: false}]
+    ['11.0.2-ea', {version: '11.0.2', stable: false}],
+    ['18.0.1.1', {version: '18.0.1+1', stable: true}],
+    ['11.0.9.1', {version: '11.0.9+1', stable: true}],
+    ['12.0.2.1.0', {version: '12.0.2+1.0', stable: true}],
+    ['18.0.1.1-ea', {version: '18.0.1+1', stable: false}]
   ])('normalizeVersion from %s to %s', (input, expected) => {
     expect(DummyJavaBase.prototype.normalizeVersion.call(null, input)).toEqual(
       expected

dist/setup/index.js

@@ -131258,6 +131258,14 @@ class JavaBase {
             version = version.replace('-ea.', '+');
             stable = false;
         }
+        // Java uses a versioning scheme (JEP 322) that can contain more numeric
+        // fields than SemVer allows, e.g. '18.0.1.1' or '11.0.9.1'. Convert such
+        // exact versions to SemVer build notation ('18.0.1+1') so they are
+        // accepted. Ranges and versions that already carry build metadata are
+        // left untouched.
+        if (/^\d+(\.\d+){3,}$/.test(version)) {
+            version = convertVersionToSemver(version);
+        }
         if (!semver_default().validRange(version)) {
             throw new Error(`The string '${version}' is not valid SemVer notation for a Java version. Please check README file for code snippets and more detailed information`);
         }

src/distributions/base-installer.ts

@@ -4,7 +4,11 @@ import * as fs from 'fs';
 import semver from 'semver';
 import path from 'path';
 import * as httpm from '@actions/http-client';
-import {getToolcachePath, isVersionSatisfies} from '../util.js';
+import {
+  convertVersionToSemver,
+  getToolcachePath,
+  isVersionSatisfies
+} from '../util.js';
 import {
   JavaDownloadRelease,
   JavaInstallerOptions,
@@ -273,6 +277,15 @@ export abstract class JavaBase {
       stable = false;
     }
 
+    // Java uses a versioning scheme (JEP 322) that can contain more numeric
+    // fields than SemVer allows, e.g. '18.0.1.1' or '11.0.9.1'. Convert such
+    // exact versions to SemVer build notation ('18.0.1+1') so they are
+    // accepted. Ranges and versions that already carry build metadata are
+    // left untouched.
+    if (/^\d+(\.\d+){3,}$/.test(version)) {
+      version = convertVersionToSemver(version);
+    }
+
     if (!semver.validRange(version)) {
       throw new Error(
         `The string '${version}' is not valid SemVer notation for a Java version. Please check README file for code snippets and more detailed information`