Fix prettier formatting in base installer test

- Refactor setJavaDefault to delegate shared output/env logic to
  setJavaEnvironment, avoiding duplication between the two.
- Document that set-default applies to all JDKs in a multiline
  java-version, and that installed JDKs remain registered in Maven
  toolchains regardless of set-default.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.github/workflows/e2e-versions.yml

@@ -545,3 +545,77 @@ jobs:
       - name: Verify Java
         run: bash __tests__/verify-java.sh "17.0.10" "${{ steps.setup-java.outputs.path }}"
         shell: bash
+
+  setup-java-set-default:
+    name: set-default option - ${{ matrix.os }}
+    needs: setup-java-major-versions
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+      - name: Setup Java 17 as default
+        uses: ./
+        id: setup-java-17
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Setup Java 21 without setting as default
+        uses: ./
+        id: setup-java-21
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+          set-default: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Verify JAVA_HOME still points to Java 17
+        run: |
+          echo "JAVA_HOME=$JAVA_HOME"
+          echo "Java 17 path=${{ steps.setup-java-17.outputs.path }}"
+          if [ "$JAVA_HOME" != "${{ steps.setup-java-17.outputs.path }}" ]; then
+            echo "JAVA_HOME should still point to Java 17"
+            exit 1
+          fi
+        shell: bash
+      - name: Verify java -version reports Java 17
+        run: |
+          JAVA_VERSION=$(java -version 2>&1 | head -1)
+          echo "java -version: $JAVA_VERSION"
+          if ! echo "$JAVA_VERSION" | grep -q "17"; then
+            echo "Default java should still be version 17"
+            exit 1
+          fi
+        shell: bash
+      - name: Verify JAVA_HOME_21 env var is set
+        run: |
+          $envName = "JAVA_HOME_21_${env:RUNNER_ARCH}"
+          $JavaVersionPath = [Environment]::GetEnvironmentVariable($envName)
+          if (-not $JavaVersionPath) {
+            Write-Host "$envName is not set"
+            exit 1
+          }
+          if (-not (Test-Path "$JavaVersionPath")) {
+            Write-Host "$envName path does not exist: $JavaVersionPath"
+            exit 1
+          }
+          Write-Host "$envName=$JavaVersionPath"
+        shell: pwsh
+      - name: Verify Java 21 outputs are set
+        run: |
+          echo "Java 21 path=${{ steps.setup-java-21.outputs.path }}"
+          echo "Java 21 version=${{ steps.setup-java-21.outputs.version }}"
+          if [ -z "${{ steps.setup-java-21.outputs.path }}" ]; then
+            echo "Java 21 path output should be set"
+            exit 1
+          fi
+          if [ -z "${{ steps.setup-java-21.outputs.version }}" ]; then
+            echo "Java 21 version output should be set"
+            exit 1
+          fi
+        shell: bash

README.md

@@ -41,6 +41,8 @@ For more details,  see the full release notes on the [releases page](https://git
 
   - `check-latest`: Setting this option makes the action to check for the latest available version for the version spec.
 
+  - `set-default`: Set to `false` to install a JDK without making it the default. When `false`, `JAVA_HOME` and `PATH` are not updated, but `JAVA_HOME_<major>_<arch>` is still set so the JDK remains discoverable. Default value: `true`. See [Installing JDK without setting as default](docs/advanced-usage.md#Installing-JDK-without-setting-as-default) for more details.
+
   - `cache`: Quick [setup caching](#caching-packages-dependencies) for the dependencies managed through one of the predefined package managers. It can be one of "maven", "gradle" or "sbt".
 
   - `cache-dependency-path`: The path to a dependency file: pom.xml, build.gradle, build.sbt, etc. This option can be used with the `cache` option. If this option is omitted, the action searches for the dependency file in the entire repository. This option supports wildcards and a list of file names for caching multiple dependencies.

__tests__/distributors/base-installer.test.ts

@@ -545,6 +545,110 @@ describe('setupJava', () => {
     expect(spyCoreExportVariable).not.toHaveBeenCalled();
     expect(spyCoreSetOutput).not.toHaveBeenCalled();
   });
+
+  it('should not set JAVA_HOME and PATH when setDefault is false', async () => {
+    mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      architecture: 'x86',
+      packageType: 'jdk',
+      checkLatest: false,
+      setDefault: false
+    });
+    await expect(mockJavaBase.setupJava()).resolves.toEqual({
+      version: installedJavaVersion,
+      path: javaPath
+    });
+    expect(spyCoreExportVariable).not.toHaveBeenCalledWith(
+      'JAVA_HOME',
+      expect.anything()
+    );
+    expect(spyCoreAddPath).not.toHaveBeenCalled();
+    expect(spyCoreExportVariable).toHaveBeenCalledWith(
+      'JAVA_HOME_11_X86',
+      javaPath
+    );
+    expect(spyCoreSetOutput).toHaveBeenCalledWith(
+      'version',
+      installedJavaVersion
+    );
+    expect(spyCoreSetOutput).toHaveBeenCalledWith('path', javaPath);
+    expect(spyCoreSetOutput).toHaveBeenCalledWith('distribution', 'Empty');
+    expect(spyCoreInfo).toHaveBeenCalledWith(
+      `Installing Java ${installedJavaVersion} (not setting as default)`
+    );
+  });
+
+  it('should set JAVA_HOME and PATH when setDefault is true', async () => {
+    mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      architecture: 'x86',
+      packageType: 'jdk',
+      checkLatest: false,
+      setDefault: true
+    });
+    await expect(mockJavaBase.setupJava()).resolves.toEqual({
+      version: installedJavaVersion,
+      path: javaPath
+    });
+    expect(spyCoreExportVariable).toHaveBeenCalledWith('JAVA_HOME', javaPath);
+    expect(spyCoreAddPath).toHaveBeenCalledWith(path.join(javaPath, 'bin'));
+    expect(spyCoreExportVariable).toHaveBeenCalledWith(
+      'JAVA_HOME_11_X86',
+      javaPath
+    );
+    expect(spyCoreInfo).toHaveBeenCalledWith(
+      `Setting Java ${installedJavaVersion} as the default`
+    );
+  });
+
+  it('should default to setting as default when setDefault is not specified', async () => {
+    mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      architecture: 'x86',
+      packageType: 'jdk',
+      checkLatest: false
+    });
+    await expect(mockJavaBase.setupJava()).resolves.toEqual({
+      version: installedJavaVersion,
+      path: javaPath
+    });
+    expect(spyCoreExportVariable).toHaveBeenCalledWith('JAVA_HOME', javaPath);
+    expect(spyCoreAddPath).toHaveBeenCalledWith(path.join(javaPath, 'bin'));
+    expect(spyCoreInfo).toHaveBeenCalledWith(
+      `Setting Java ${installedJavaVersion} as the default`
+    );
+  });
+
+  it('should download and not set default when setDefault is false', async () => {
+    mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      architecture: 'x64',
+      packageType: 'jdk',
+      checkLatest: false,
+      setDefault: false
+    });
+    await expect(mockJavaBase.setupJava()).resolves.toEqual({
+      version: '11.0.9',
+      path: path.join('toolcache', 'Java_Empty_jdk', '11.0.9', 'x64')
+    });
+    expect(spyCoreExportVariable).not.toHaveBeenCalledWith(
+      'JAVA_HOME',
+      expect.anything()
+    );
+    expect(spyCoreAddPath).not.toHaveBeenCalled();
+    expect(spyCoreExportVariable).toHaveBeenCalledWith(
+      'JAVA_HOME_11_X64',
+      path.join('toolcache', 'Java_Empty_jdk', '11.0.9', 'x64')
+    );
+    expect(spyCoreSetOutput).toHaveBeenCalledWith('version', '11.0.9');
+    expect(spyCoreSetOutput).toHaveBeenCalledWith(
+      'path',
+      path.join('toolcache', 'Java_Empty_jdk', '11.0.9', 'x64')
+    );
+    expect(spyCoreInfo).toHaveBeenCalledWith(
+      'Installing Java 11.0.9 (not setting as default)'
+    );
+  });
 });
 
 describe('normalizeVersion', () => {

__tests__/maven-args.test.ts

@@ -1,104 +0,0 @@
-import * as core from '@actions/core';
-
-import {configureMavenArgs} from '../src/maven-args';
-import {
-  INPUT_SHOW_DOWNLOAD_PROGRESS,
-  MAVEN_ARGS_ENV,
-  MAVEN_NO_TRANSFER_PROGRESS_FLAG
-} from '../src/constants';
-
-describe('configureMavenArgs', () => {
-  let inputs: Record<string, string>;
-  let spyGetInput: jest.SpyInstance;
-  let spyExportVariable: jest.SpyInstance;
-  let spyInfo: jest.SpyInstance;
-  let spyDebug: jest.SpyInstance;
-  const originalMavenArgs = process.env[MAVEN_ARGS_ENV];
-
-  beforeEach(() => {
-    inputs = {};
-
-    spyGetInput = jest.spyOn(core, 'getInput');
-    spyGetInput.mockImplementation((name: string) => inputs[name] ?? '');
-
-    spyExportVariable = jest.spyOn(core, 'exportVariable');
-    spyExportVariable.mockImplementation((name: string, value: string) => {
-      process.env[name] = value;
-    });
-
-    spyInfo = jest.spyOn(core, 'info');
-    spyInfo.mockImplementation(() => undefined);
-
-    spyDebug = jest.spyOn(core, 'debug');
-    spyDebug.mockImplementation(() => undefined);
-
-    delete process.env[MAVEN_ARGS_ENV];
-  });
-
-  afterEach(() => {
-    jest.restoreAllMocks();
-    if (originalMavenArgs === undefined) {
-      delete process.env[MAVEN_ARGS_ENV];
-    } else {
-      process.env[MAVEN_ARGS_ENV] = originalMavenArgs;
-    }
-  });
-
-  it('sets MAVEN_ARGS with -ntp by default', () => {
-    configureMavenArgs();
-
-    expect(spyExportVariable).toHaveBeenCalledWith(
-      MAVEN_ARGS_ENV,
-      MAVEN_NO_TRANSFER_PROGRESS_FLAG
-    );
-    expect(process.env[MAVEN_ARGS_ENV]).toBe(MAVEN_NO_TRANSFER_PROGRESS_FLAG);
-  });
-
-  it('does not modify MAVEN_ARGS when show-download-progress is true', () => {
-    inputs[INPUT_SHOW_DOWNLOAD_PROGRESS] = 'true';
-
-    configureMavenArgs();
-
-    expect(spyExportVariable).not.toHaveBeenCalled();
-    expect(process.env[MAVEN_ARGS_ENV]).toBeUndefined();
-  });
-
-  it('preserves an existing MAVEN_ARGS value and appends -ntp', () => {
-    process.env[MAVEN_ARGS_ENV] = '-B -Dstyle.color=always';
-
-    configureMavenArgs();
-
-    expect(spyExportVariable).toHaveBeenCalledWith(
-      MAVEN_ARGS_ENV,
-      `-B -Dstyle.color=always ${MAVEN_NO_TRANSFER_PROGRESS_FLAG}`
-    );
-  });
-
-  it('does not duplicate the flag when -ntp is already present', () => {
-    process.env[MAVEN_ARGS_ENV] = '-B -ntp';
-
-    configureMavenArgs();
-
-    expect(spyExportVariable).not.toHaveBeenCalled();
-    expect(process.env[MAVEN_ARGS_ENV]).toBe('-B -ntp');
-  });
-
-  it('does not duplicate the flag when --no-transfer-progress is already present', () => {
-    process.env[MAVEN_ARGS_ENV] = '--no-transfer-progress -B';
-
-    configureMavenArgs();
-
-    expect(spyExportVariable).not.toHaveBeenCalled();
-    expect(process.env[MAVEN_ARGS_ENV]).toBe('--no-transfer-progress -B');
-  });
-
-  it('keeps the existing MAVEN_ARGS when show-download-progress is true', () => {
-    inputs[INPUT_SHOW_DOWNLOAD_PROGRESS] = 'true';
-    process.env[MAVEN_ARGS_ENV] = '-B';
-
-    configureMavenArgs();
-
-    expect(spyExportVariable).not.toHaveBeenCalled();
-    expect(process.env[MAVEN_ARGS_ENV]).toBe('-B');
-  });
-});

action.yml

@@ -26,6 +26,10 @@ inputs:
     description: 'Set this option if you want the action to check for the latest available version that satisfies the version spec'
     required: false
     default: false
+  set-default:
+    description: 'Set this option to false if you want to install a JDK but not make it the default. When false, JAVA_HOME and PATH are not updated, but JAVA_HOME_<major>_<arch> is still set.'
+    required: false
+    default: true
   server-id:
     description: 'ID of the distributionManagement repository in the pom.xml
        file. Default is `github`'
@@ -75,10 +79,6 @@ inputs:
   mvn-toolchain-vendor:
     description: 'Name of Maven Toolchain Vendor if the default name of "${distribution}" is not wanted. See examples of supported syntax in Advanced Usage file'
     required: false
-  show-download-progress:
-    description: 'Whether Maven should print artifact download/transfer progress to the build log. When "false" (default) the action sets "-ntp" (--no-transfer-progress) in MAVEN_ARGS to produce cleaner logs. Set to "true" to keep the progress output. Has no effect on non-Maven builds.'
-    required: false
-    default: false
 outputs:
   distribution:
     description: 'Distribution of Java that has been installed'

dist/cleanup/index.js

@@ -52241,7 +52241,7 @@ else {
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = exports.MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG = exports.MAVEN_NO_TRANSFER_PROGRESS_FLAG = exports.MAVEN_ARGS_ENV = exports.INPUT_SHOW_DOWNLOAD_PROGRESS = exports.INPUT_MVN_TOOLCHAIN_VENDOR = exports.INPUT_MVN_TOOLCHAIN_ID = exports.MVN_TOOLCHAINS_FILE = exports.MVN_SETTINGS_FILE = exports.M2_DIR = exports.STATE_GPG_PRIVATE_KEY_FINGERPRINT = exports.INPUT_JOB_STATUS = exports.INPUT_CACHE_DEPENDENCY_PATH = exports.INPUT_CACHE = exports.INPUT_DEFAULT_GPG_PASSPHRASE = exports.INPUT_DEFAULT_GPG_PRIVATE_KEY = exports.INPUT_GPG_PASSPHRASE = exports.INPUT_GPG_PRIVATE_KEY = exports.INPUT_OVERWRITE_SETTINGS = exports.INPUT_SETTINGS_PATH = exports.INPUT_SERVER_PASSWORD = exports.INPUT_SERVER_USERNAME = exports.INPUT_SERVER_ID = exports.INPUT_CHECK_LATEST = exports.INPUT_JDK_FILE = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_PACKAGE = exports.INPUT_ARCHITECTURE = exports.INPUT_JAVA_VERSION_FILE = exports.INPUT_JAVA_VERSION = exports.MACOS_JAVA_CONTENT_POSTFIX = void 0;
+exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = exports.INPUT_MVN_TOOLCHAIN_VENDOR = exports.INPUT_MVN_TOOLCHAIN_ID = exports.MVN_TOOLCHAINS_FILE = exports.MVN_SETTINGS_FILE = exports.M2_DIR = exports.STATE_GPG_PRIVATE_KEY_FINGERPRINT = exports.INPUT_JOB_STATUS = exports.INPUT_CACHE_DEPENDENCY_PATH = exports.INPUT_CACHE = exports.INPUT_DEFAULT_GPG_PASSPHRASE = exports.INPUT_DEFAULT_GPG_PRIVATE_KEY = exports.INPUT_GPG_PASSPHRASE = exports.INPUT_GPG_PRIVATE_KEY = exports.INPUT_OVERWRITE_SETTINGS = exports.INPUT_SETTINGS_PATH = exports.INPUT_SERVER_PASSWORD = exports.INPUT_SERVER_USERNAME = exports.INPUT_SERVER_ID = exports.INPUT_SET_DEFAULT = exports.INPUT_CHECK_LATEST = exports.INPUT_JDK_FILE = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_PACKAGE = exports.INPUT_ARCHITECTURE = exports.INPUT_JAVA_VERSION_FILE = exports.INPUT_JAVA_VERSION = exports.MACOS_JAVA_CONTENT_POSTFIX = void 0;
 exports.MACOS_JAVA_CONTENT_POSTFIX = 'Contents/Home';
 exports.INPUT_JAVA_VERSION = 'java-version';
 exports.INPUT_JAVA_VERSION_FILE = 'java-version-file';
@@ -52250,6 +52250,7 @@ exports.INPUT_JAVA_PACKAGE = 'java-package';
 exports.INPUT_DISTRIBUTION = 'distribution';
 exports.INPUT_JDK_FILE = 'jdkFile';
 exports.INPUT_CHECK_LATEST = 'check-latest';
+exports.INPUT_SET_DEFAULT = 'set-default';
 exports.INPUT_SERVER_ID = 'server-id';
 exports.INPUT_SERVER_USERNAME = 'server-username';
 exports.INPUT_SERVER_PASSWORD = 'server-password';
@@ -52268,10 +52269,6 @@ exports.MVN_SETTINGS_FILE = 'settings.xml';
 exports.MVN_TOOLCHAINS_FILE = 'toolchains.xml';
 exports.INPUT_MVN_TOOLCHAIN_ID = 'mvn-toolchain-id';
 exports.INPUT_MVN_TOOLCHAIN_VENDOR = 'mvn-toolchain-vendor';
-exports.INPUT_SHOW_DOWNLOAD_PROGRESS = 'show-download-progress';
-exports.MAVEN_ARGS_ENV = 'MAVEN_ARGS';
-exports.MAVEN_NO_TRANSFER_PROGRESS_FLAG = '-ntp';
-exports.MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG = '--no-transfer-progress';
 exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = ['corretto'];
 
 

dist/setup/index.js

@@ -78000,7 +78000,7 @@ function isProbablyGradleDaemonProblem(packageManager, error) {
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = exports.MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG = exports.MAVEN_NO_TRANSFER_PROGRESS_FLAG = exports.MAVEN_ARGS_ENV = exports.INPUT_SHOW_DOWNLOAD_PROGRESS = exports.INPUT_MVN_TOOLCHAIN_VENDOR = exports.INPUT_MVN_TOOLCHAIN_ID = exports.MVN_TOOLCHAINS_FILE = exports.MVN_SETTINGS_FILE = exports.M2_DIR = exports.STATE_GPG_PRIVATE_KEY_FINGERPRINT = exports.INPUT_JOB_STATUS = exports.INPUT_CACHE_DEPENDENCY_PATH = exports.INPUT_CACHE = exports.INPUT_DEFAULT_GPG_PASSPHRASE = exports.INPUT_DEFAULT_GPG_PRIVATE_KEY = exports.INPUT_GPG_PASSPHRASE = exports.INPUT_GPG_PRIVATE_KEY = exports.INPUT_OVERWRITE_SETTINGS = exports.INPUT_SETTINGS_PATH = exports.INPUT_SERVER_PASSWORD = exports.INPUT_SERVER_USERNAME = exports.INPUT_SERVER_ID = exports.INPUT_CHECK_LATEST = exports.INPUT_JDK_FILE = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_PACKAGE = exports.INPUT_ARCHITECTURE = exports.INPUT_JAVA_VERSION_FILE = exports.INPUT_JAVA_VERSION = exports.MACOS_JAVA_CONTENT_POSTFIX = void 0;
+exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = exports.INPUT_MVN_TOOLCHAIN_VENDOR = exports.INPUT_MVN_TOOLCHAIN_ID = exports.MVN_TOOLCHAINS_FILE = exports.MVN_SETTINGS_FILE = exports.M2_DIR = exports.STATE_GPG_PRIVATE_KEY_FINGERPRINT = exports.INPUT_JOB_STATUS = exports.INPUT_CACHE_DEPENDENCY_PATH = exports.INPUT_CACHE = exports.INPUT_DEFAULT_GPG_PASSPHRASE = exports.INPUT_DEFAULT_GPG_PRIVATE_KEY = exports.INPUT_GPG_PASSPHRASE = exports.INPUT_GPG_PRIVATE_KEY = exports.INPUT_OVERWRITE_SETTINGS = exports.INPUT_SETTINGS_PATH = exports.INPUT_SERVER_PASSWORD = exports.INPUT_SERVER_USERNAME = exports.INPUT_SERVER_ID = exports.INPUT_SET_DEFAULT = exports.INPUT_CHECK_LATEST = exports.INPUT_JDK_FILE = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_PACKAGE = exports.INPUT_ARCHITECTURE = exports.INPUT_JAVA_VERSION_FILE = exports.INPUT_JAVA_VERSION = exports.MACOS_JAVA_CONTENT_POSTFIX = void 0;
 exports.MACOS_JAVA_CONTENT_POSTFIX = 'Contents/Home';
 exports.INPUT_JAVA_VERSION = 'java-version';
 exports.INPUT_JAVA_VERSION_FILE = 'java-version-file';
@@ -78009,6 +78009,7 @@ exports.INPUT_JAVA_PACKAGE = 'java-package';
 exports.INPUT_DISTRIBUTION = 'distribution';
 exports.INPUT_JDK_FILE = 'jdkFile';
 exports.INPUT_CHECK_LATEST = 'check-latest';
+exports.INPUT_SET_DEFAULT = 'set-default';
 exports.INPUT_SERVER_ID = 'server-id';
 exports.INPUT_SERVER_USERNAME = 'server-username';
 exports.INPUT_SERVER_PASSWORD = 'server-password';
@@ -78027,10 +78028,6 @@ exports.MVN_SETTINGS_FILE = 'settings.xml';
 exports.MVN_TOOLCHAINS_FILE = 'toolchains.xml';
 exports.INPUT_MVN_TOOLCHAIN_ID = 'mvn-toolchain-id';
 exports.INPUT_MVN_TOOLCHAIN_VENDOR = 'mvn-toolchain-vendor';
-exports.INPUT_SHOW_DOWNLOAD_PROGRESS = 'show-download-progress';
-exports.MAVEN_ARGS_ENV = 'MAVEN_ARGS';
-exports.MAVEN_NO_TRANSFER_PROGRESS_FLAG = '-ntp';
-exports.MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG = '--no-transfer-progress';
 exports.DISTRIBUTIONS_ONLY_MAJOR_VERSION = ['corretto'];
 
 
@@ -78321,6 +78318,10 @@ class JavaBase {
         this.architecture = installerOptions.architecture || os_1.default.arch();
         this.packageType = installerOptions.packageType;
         this.checkLatest = installerOptions.checkLatest;
+        this.setDefault =
+            installerOptions.setDefault !== undefined
+                ? installerOptions.setDefault
+                : true;
     }
     setupJava() {
         var _a, _b;
@@ -78436,8 +78437,14 @@ class JavaBase {
             if (process.platform === 'darwin' && fs.existsSync(macOSPostfixPath)) {
                 foundJava.path = macOSPostfixPath;
             }
-            core.info(`Setting Java ${foundJava.version} as the default`);
+            if (this.setDefault) {
-            this.setJavaDefault(foundJava.version, foundJava.path);
+                core.info(`Setting Java ${foundJava.version} as the default`);
+                this.setJavaDefault(foundJava.version, foundJava.path);
+            }
+            else {
+                core.info(`Installing Java ${foundJava.version} (not setting as default)`);
+                this.setJavaEnvironment(foundJava.version, foundJava.path);
+            }
             return foundJava;
         });
     }
@@ -78535,9 +78542,12 @@ class JavaBase {
         return error;
     }
     setJavaDefault(version, toolPath) {
-        const majorVersion = version.split('.')[0];
         core.exportVariable('JAVA_HOME', toolPath);
         core.addPath(path_1.default.join(toolPath, 'bin'));
+        this.setJavaEnvironment(version, toolPath);
+    }
+    setJavaEnvironment(version, toolPath) {
+        const majorVersion = version.split('.')[0];
         core.setOutput('distribution', this.distribution);
         core.setOutput('path', toolPath);
         core.setOutput('version', version);
@@ -79734,8 +79744,14 @@ class LocalDistribution extends base_installer_1.JavaBase {
             if (process.platform === 'darwin' && fs_1.default.existsSync(macOSPostfixPath)) {
                 foundJava.path = macOSPostfixPath;
             }
-            core.info(`Setting Java ${foundJava.version} as default`);
+            if (this.setDefault) {
-            this.setJavaDefault(foundJava.version, foundJava.path);
+                core.info(`Setting Java ${foundJava.version} as the default`);
+                this.setJavaDefault(foundJava.version, foundJava.path);
+            }
+            else {
+                core.info(`Installing Java ${foundJava.version} (not setting as default)`);
+                this.setJavaEnvironment(foundJava.version, foundJava.path);
+            }
             return foundJava;
         });
     }
@@ -80893,87 +80909,6 @@ function deleteKey(keyFingerprint) {
 exports.deleteKey = deleteKey;
 
 
-/***/ }),
-
-/***/ 38172:
-/***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
-
-"use strict";
-
-var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
-    if (k2 === undefined) k2 = k;
-    var desc = Object.getOwnPropertyDescriptor(m, k);
-    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
-      desc = { enumerable: true, get: function() { return m[k]; } };
-    }
-    Object.defineProperty(o, k2, desc);
-}) : (function(o, m, k, k2) {
-    if (k2 === undefined) k2 = k;
-    o[k2] = m[k];
-}));
-var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
-    Object.defineProperty(o, "default", { enumerable: true, value: v });
-}) : function(o, v) {
-    o["default"] = v;
-});
-var __importStar = (this && this.__importStar) || function (mod) {
-    if (mod && mod.__esModule) return mod;
-    var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
-    __setModuleDefault(result, mod);
-    return result;
-};
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.configureMavenArgs = void 0;
-const core = __importStar(__nccwpck_require__(37484));
-const util_1 = __nccwpck_require__(54527);
-const constants_1 = __nccwpck_require__(27242);
-/**
- * Configures the MAVEN_ARGS environment variable so that Maven suppresses
- * artifact transfer/download progress output by default, producing cleaner
- * CI logs.
- *
- * Behavior:
- * - When `show-download-progress` is `false` (the default), `-ntp`
- *   (`--no-transfer-progress`) is appended to any existing MAVEN_ARGS value.
- * - When `show-download-progress` is `true`, MAVEN_ARGS is left untouched so
- *   the user's own configuration (and Maven's default progress output) is
- *   preserved.
- *
- * The change is idempotent: if MAVEN_ARGS already disables transfer progress
- * (via `-ntp` or `--no-transfer-progress`) nothing is added. Any pre-existing
- * MAVEN_ARGS value is preserved.
- *
- * MAVEN_ARGS is honored by Maven 3.9.0+ and the Maven Wrapper; older Maven
- * versions ignore it, so this is a no-op there. It has no effect on non-Maven
- * builds such as Gradle or sbt.
- */
-function configureMavenArgs() {
-    var _a;
-    const showDownloadProgress = (0, util_1.getBooleanInput)(constants_1.INPUT_SHOW_DOWNLOAD_PROGRESS, false);
-    if (showDownloadProgress) {
-        core.debug(`${constants_1.INPUT_SHOW_DOWNLOAD_PROGRESS} is true; leaving ${constants_1.MAVEN_ARGS_ENV} unchanged`);
-        return;
-    }
-    const existingArgs = ((_a = process.env[constants_1.MAVEN_ARGS_ENV]) !== null && _a !== void 0 ? _a : '').trim();
-    const alreadyDisabled = existingArgs
-        .split(/\s+/)
-        .some(arg => arg === constants_1.MAVEN_NO_TRANSFER_PROGRESS_FLAG ||
-        arg === constants_1.MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG);
-    if (alreadyDisabled) {
-        core.debug(`${constants_1.MAVEN_ARGS_ENV} already disables transfer progress; leaving it unchanged`);
-        return;
-    }
-    const updatedArgs = existingArgs
-        ? `${existingArgs} ${constants_1.MAVEN_NO_TRANSFER_PROGRESS_FLAG}`
-        : constants_1.MAVEN_NO_TRANSFER_PROGRESS_FLAG;
-    core.exportVariable(constants_1.MAVEN_ARGS_ENV, updatedArgs);
-    core.info(`Configured ${constants_1.MAVEN_ARGS_ENV} to include ${constants_1.MAVEN_NO_TRANSFER_PROGRESS_FLAG} to suppress Maven transfer progress logs. ` +
-        `Set '${constants_1.INPUT_SHOW_DOWNLOAD_PROGRESS}: true' to keep the download progress output.`);
-}
-exports.configureMavenArgs = configureMavenArgs;
-
-
 /***/ }),
 
 /***/ 90471:
@@ -81026,7 +80961,6 @@ const constants = __importStar(__nccwpck_require__(27242));
 const cache_1 = __nccwpck_require__(97377);
 const path = __importStar(__nccwpck_require__(16928));
 const distribution_factory_1 = __nccwpck_require__(2970);
-const maven_args_1 = __nccwpck_require__(38172);
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
@@ -81041,6 +80975,7 @@ function run() {
             const cache = core.getInput(constants.INPUT_CACHE);
             const cacheDependencyPath = core.getInput(constants.INPUT_CACHE_DEPENDENCY_PATH);
             const checkLatest = (0, util_1.getBooleanInput)(constants.INPUT_CHECK_LATEST, false);
+            const setDefault = (0, util_1.getBooleanInput)(constants.INPUT_SET_DEFAULT, true);
             let toolchainIds = core.getMultilineInput(constants.INPUT_MVN_TOOLCHAIN_ID);
             core.startGroup('Installed distributions');
             if (versions.length !== toolchainIds.length) {
@@ -81053,6 +80988,7 @@ function run() {
                 architecture,
                 packageType,
                 checkLatest,
+                setDefault,
                 distributionName,
                 jdkFile,
                 toolchainIds
@@ -81074,7 +81010,6 @@ function run() {
             const matchersPath = path.join(__dirname, '..', '..', '.github');
             core.info(`##[add-matcher]${path.join(matchersPath, 'java.json')}`);
             yield auth.configureAuthentication();
-            (0, maven_args_1.configureMavenArgs)();
             if (cache && (0, util_1.isCacheFeatureAvailable)()) {
                 yield (0, cache_1.restore)(cache, cacheDependencyPath);
             }
@@ -81087,11 +81022,12 @@ function run() {
 run();
 function installVersion(version, options, toolchainId = 0) {
     return __awaiter(this, void 0, void 0, function* () {
-        const { distributionName, jdkFile, architecture, packageType, checkLatest, toolchainIds } = options;
+        const { distributionName, jdkFile, architecture, packageType, checkLatest, setDefault, toolchainIds } = options;
         const installerOptions = {
             architecture,
             packageType,
             checkLatest,
+            setDefault,
             version
         };
         const distribution = (0, distribution_factory_1.getJavaDistribution)(distributionName, installerOptions, jdkFile);

docs/advanced-usage.md

@@ -14,11 +14,11 @@
 - [Installing custom Java package type](#Installing-custom-Java-package-type)
   - [JavaFX Maven project](#JavaFX-Maven-project)
 - [Installing custom Java architecture](#Installing-custom-Java-architecture)
+- [Installing JDK without setting as default](#Installing-JDK-without-setting-as-default)
 - [Installing custom Java distribution from local file](#Installing-Java-from-local-file)
 - [Testing against different Java distributions](#Testing-against-different-Java-distributions)
 - [Testing against different platforms](#Testing-against-different-platforms)
 - [Publishing using Apache Maven](#Publishing-using-Apache-Maven)
-- [Maven transfer progress (download logs)](#Maven-transfer-progress-download-logs)
 - [Publishing using Gradle](#Publishing-using-Gradle)
 - [Hosted Tool Cache](#Hosted-Tool-Cache)
 - [Modifying Maven Toolchains](#Modifying-Maven-Toolchains)
@@ -268,6 +268,34 @@ steps:
 - run: java --version
 ```
 
+## Installing JDK without setting as default
+
+When installing multiple JDKs, the last one installed becomes the default (`JAVA_HOME`, `PATH`). Use the `set-default` option to install a JDK without overriding the default. The installed JDK is still discoverable via the `JAVA_HOME_<major>_<arch>` environment variable (e.g. `JAVA_HOME_21_X64`).
+
+```yaml
+steps:
+- uses: actions/checkout@v6
+- uses: actions/setup-java@v5
+  with:
+    distribution: 'temurin'
+    java-version: '17'
+- uses: actions/setup-java@v5
+  id: setup-java-21
+  with:
+    distribution: 'temurin'
+    java-version: '21'
+    set-default: false
+- run: |
+    echo "Default java:"
+    java -version
+    echo "Java 21 home: $JAVA_HOME_21_X64"
+    echo "Java 21 path from output: ${{ steps.setup-java-21.outputs.path }}"
+```
+
+In this example, `JAVA_HOME` and `java` on `PATH` point to Java 17, while Java 21 is available via `JAVA_HOME_21_X64` or the step output `path`.
+
+> **Note:** When a single step installs multiple JDKs via a multiline `java-version`, the `set-default` value applies to all of them. With `set-default: false`, none of those JDKs become the default; each remains discoverable through its `JAVA_HOME_<major>_<arch>` variable. Regardless of `set-default`, installed JDKs are still registered in the Maven toolchains file, so they can be selected via Maven toolchains.
+
 ## Installing Java from local file
 If your use-case requires a custom distribution or a version that is not provided by setup-java, you can download it manually and setup-java will take care of the installation and caching on the VM:
 
@@ -491,36 +519,6 @@ jobs:
         GITHUB_TOKEN: ${{ github.token }}
 ```
 
-## Maven transfer progress (download logs)
-
-By default, Maven prints a line for every artifact it downloads, which can add hundreds of noisy lines to CI logs. To keep logs clean, `setup-java` sets the [`MAVEN_ARGS`](https://maven.apache.org/configure.html#maven_args-environment-variable) environment variable to include `-ntp` (`--no-transfer-progress`) so that subsequent Maven invocations in the job suppress this transfer progress output.
-
-This is enabled by default. Any existing `MAVEN_ARGS` value is preserved (the flag is appended, not overwritten), and the flag is not added twice if you already set it yourself.
-
-If you want to keep the download/transfer progress in your logs, set `show-download-progress: true`:
-
-```yaml
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-java@v5
-      with:
-        distribution: '<distribution>'
-        java-version: '21'
-        show-download-progress: true # keep Maven download/transfer progress in the logs
-
-    - name: Build with Maven
-      run: mvn -B package --file pom.xml
-```
-
-***NOTES***:
-- `MAVEN_ARGS` is honored by Maven 3.9.0+ and the Maven Wrapper (`mvnw`). Older Maven versions ignore it, so on those you can pass `--no-transfer-progress` on the command line instead.
-- This setting only affects Maven. It has no effect on Gradle, sbt, or other build tools.
-- `-ntp` only controls transfer/progress output; it does not change whether Maven runs in batch mode. Use `-B`/`--batch-mode` (or `<interactiveMode>false</interactiveMode>` in `settings.xml`) if you also want non-interactive runs.
-
 ## Publishing using Gradle
 ```yaml
 jobs:

src/constants.ts

@@ -6,6 +6,7 @@ export const INPUT_JAVA_PACKAGE = 'java-package';
 export const INPUT_DISTRIBUTION = 'distribution';
 export const INPUT_JDK_FILE = 'jdkFile';
 export const INPUT_CHECK_LATEST = 'check-latest';
+export const INPUT_SET_DEFAULT = 'set-default';
 export const INPUT_SERVER_ID = 'server-id';
 export const INPUT_SERVER_USERNAME = 'server-username';
 export const INPUT_SERVER_PASSWORD = 'server-password';
@@ -28,10 +29,5 @@ export const MVN_SETTINGS_FILE = 'settings.xml';
 export const MVN_TOOLCHAINS_FILE = 'toolchains.xml';
 export const INPUT_MVN_TOOLCHAIN_ID = 'mvn-toolchain-id';
 export const INPUT_MVN_TOOLCHAIN_VENDOR = 'mvn-toolchain-vendor';
-export const INPUT_SHOW_DOWNLOAD_PROGRESS = 'show-download-progress';
-
-export const MAVEN_ARGS_ENV = 'MAVEN_ARGS';
-export const MAVEN_NO_TRANSFER_PROGRESS_FLAG = '-ntp';
-export const MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG = '--no-transfer-progress';
 
 export const DISTRIBUTIONS_ONLY_MAJOR_VERSION = ['corretto'];

src/distributions/base-installer.ts

@@ -20,6 +20,7 @@ export abstract class JavaBase {
   protected packageType: string;
   protected stable: boolean;
   protected checkLatest: boolean;
+  protected setDefault: boolean;
 
   constructor(
     protected distribution: string,
@@ -36,6 +37,10 @@ export abstract class JavaBase {
     this.architecture = installerOptions.architecture || os.arch();
     this.packageType = installerOptions.packageType;
     this.checkLatest = installerOptions.checkLatest;
+    this.setDefault =
+      installerOptions.setDefault !== undefined
+        ? installerOptions.setDefault
+        : true;
   }
 
   protected abstract downloadTool(
@@ -169,8 +174,15 @@ export abstract class JavaBase {
       foundJava.path = macOSPostfixPath;
     }
 
-    core.info(`Setting Java ${foundJava.version} as the default`);
+    if (this.setDefault) {
-    this.setJavaDefault(foundJava.version, foundJava.path);
+      core.info(`Setting Java ${foundJava.version} as the default`);
+      this.setJavaDefault(foundJava.version, foundJava.path);
+    } else {
+      core.info(
+        `Installing Java ${foundJava.version} (not setting as default)`
+      );
+      this.setJavaEnvironment(foundJava.version, foundJava.path);
+    }
 
     return foundJava;
   }
@@ -298,9 +310,13 @@ export abstract class JavaBase {
   }
 
   protected setJavaDefault(version: string, toolPath: string) {
-    const majorVersion = version.split('.')[0];
     core.exportVariable('JAVA_HOME', toolPath);
     core.addPath(path.join(toolPath, 'bin'));
+    this.setJavaEnvironment(version, toolPath);
+  }
+
+  protected setJavaEnvironment(version: string, toolPath: string) {
+    const majorVersion = version.split('.')[0];
     core.setOutput('distribution', this.distribution);
     core.setOutput('path', toolPath);
     core.setOutput('version', version);

src/distributions/base-models.ts

@@ -3,6 +3,7 @@ export interface JavaInstallerOptions {
   architecture: string;
   packageType: string;
   checkLatest: boolean;
+  setDefault?: boolean;
 }
 
 export interface JavaInstallerResults {

src/distributions/local/installer.ts

@@ -69,9 +69,15 @@ export class LocalDistribution extends JavaBase {
       foundJava.path = macOSPostfixPath;
     }
 
-    core.info(`Setting Java ${foundJava.version} as default`);
+    if (this.setDefault) {
-
+      core.info(`Setting Java ${foundJava.version} as the default`);
-    this.setJavaDefault(foundJava.version, foundJava.path);
+      this.setJavaDefault(foundJava.version, foundJava.path);
+    } else {
+      core.info(
+        `Installing Java ${foundJava.version} (not setting as default)`
+      );
+      this.setJavaEnvironment(foundJava.version, foundJava.path);
+    }
     return foundJava;
   }
 

src/maven-args.ts

@@ -1,69 +0,0 @@
-import * as core from '@actions/core';
-import {getBooleanInput} from './util';
-import {
-  INPUT_SHOW_DOWNLOAD_PROGRESS,
-  MAVEN_ARGS_ENV,
-  MAVEN_NO_TRANSFER_PROGRESS_FLAG,
-  MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG
-} from './constants';
-
-/**
- * Configures the MAVEN_ARGS environment variable so that Maven suppresses
- * artifact transfer/download progress output by default, producing cleaner
- * CI logs.
- *
- * Behavior:
- * - When `show-download-progress` is `false` (the default), `-ntp`
- *   (`--no-transfer-progress`) is appended to any existing MAVEN_ARGS value.
- * - When `show-download-progress` is `true`, MAVEN_ARGS is left untouched so
- *   the user's own configuration (and Maven's default progress output) is
- *   preserved.
- *
- * The change is idempotent: if MAVEN_ARGS already disables transfer progress
- * (via `-ntp` or `--no-transfer-progress`) nothing is added. Any pre-existing
- * MAVEN_ARGS value is preserved.
- *
- * MAVEN_ARGS is honored by Maven 3.9.0+ and the Maven Wrapper; older Maven
- * versions ignore it, so this is a no-op there. It has no effect on non-Maven
- * builds such as Gradle or sbt.
- */
-export function configureMavenArgs(): void {
-  const showDownloadProgress = getBooleanInput(
-    INPUT_SHOW_DOWNLOAD_PROGRESS,
-    false
-  );
-
-  if (showDownloadProgress) {
-    core.debug(
-      `${INPUT_SHOW_DOWNLOAD_PROGRESS} is true; leaving ${MAVEN_ARGS_ENV} unchanged`
-    );
-    return;
-  }
-
-  const existingArgs = (process.env[MAVEN_ARGS_ENV] ?? '').trim();
-
-  const alreadyDisabled = existingArgs
-    .split(/\s+/)
-    .some(
-      arg =>
-        arg === MAVEN_NO_TRANSFER_PROGRESS_FLAG ||
-        arg === MAVEN_NO_TRANSFER_PROGRESS_LONG_FLAG
-    );
-
-  if (alreadyDisabled) {
-    core.debug(
-      `${MAVEN_ARGS_ENV} already disables transfer progress; leaving it unchanged`
-    );
-    return;
-  }
-
-  const updatedArgs = existingArgs
-    ? `${existingArgs} ${MAVEN_NO_TRANSFER_PROGRESS_FLAG}`
-    : MAVEN_NO_TRANSFER_PROGRESS_FLAG;
-
-  core.exportVariable(MAVEN_ARGS_ENV, updatedArgs);
-  core.info(
-    `Configured ${MAVEN_ARGS_ENV} to include ${MAVEN_NO_TRANSFER_PROGRESS_FLAG} to suppress Maven transfer progress logs. ` +
-      `Set '${INPUT_SHOW_DOWNLOAD_PROGRESS}: true' to keep the download progress output.`
-  );
-}

src/setup-java.ts

@@ -12,7 +12,6 @@ import {restore} from './cache';
 import * as path from 'path';
 import {getJavaDistribution} from './distributions/distribution-factory';
 import {JavaInstallerOptions} from './distributions/base-models';
-import {configureMavenArgs} from './maven-args';
 
 async function run() {
   try {
@@ -29,6 +28,7 @@ async function run() {
       constants.INPUT_CACHE_DEPENDENCY_PATH
     );
     const checkLatest = getBooleanInput(constants.INPUT_CHECK_LATEST, false);
+    const setDefault = getBooleanInput(constants.INPUT_SET_DEFAULT, true);
     let toolchainIds = core.getMultilineInput(constants.INPUT_MVN_TOOLCHAIN_ID);
 
     core.startGroup('Installed distributions');
@@ -45,6 +45,7 @@ async function run() {
       architecture,
       packageType,
       checkLatest,
+      setDefault,
       distributionName,
       jdkFile,
       toolchainIds
@@ -80,7 +81,6 @@ async function run() {
     core.info(`##[add-matcher]${path.join(matchersPath, 'java.json')}`);
 
     await auth.configureAuthentication();
-    configureMavenArgs();
     if (cache && isCacheFeatureAvailable()) {
       await restore(cache, cacheDependencyPath);
     }
@@ -102,6 +102,7 @@ async function installVersion(
     architecture,
     packageType,
     checkLatest,
+    setDefault,
     toolchainIds
   } = options;
 
@@ -109,6 +110,7 @@ async function installVersion(
     architecture,
     packageType,
     checkLatest,
+    setDefault,
     version
   };
 
@@ -143,6 +145,7 @@ interface installerInputsOptions {
   architecture: string;
   packageType: string;
   checkLatest: boolean;
+  setDefault: boolean;
   distributionName: string;
   jdkFile: string;
   toolchainIds: Array<string>;