- updated Java version to 11.

- replaced Apache HTTP client code with `Java.net.http.HttpClient`

.github/workflows/maven-publish.yml

@@ -9,7 +9,7 @@ name: Test and Publish Package
 
 on:
   push:
-    branches: ["main"]
+    branches: [ "main" ]
   workflow_dispatch:
 
 jobs:
@@ -21,36 +21,36 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up JDK 8
-      uses: actions/setup-java@v3
-      with:
-        java-version: '8'
-        distribution: 'temurin'
-        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
-        settings-path: ${{ github.workspace }} # location for the settings.xml file
+      - uses: actions/checkout@v3
+      - name: Set up JDK 8
+        uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'adopt-hotspot'
+          server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+          settings-path: ${{ github.workspace }} # location for the settings.xml file
 
-    - name: Build with Maven
-      run: mvn -U -B clean package --file pom.xml
+      - name: Build with Maven
+        run: mvn -U -B clean package --file pom.xml
 
-    - name: Run Tests
-      run: mvn -U clean verify --file pom.xml
+      - name: Run Tests
+        run: mvn -U clean verify --file pom.xml
 
-    - name: Set up Apache Maven Central (Overwrite settings.xml)
-      uses: actions/setup-java@v3
-      with: # running setup-java again overwrites the settings.xml
-        java-version: 8
-        distribution: 'temurin'
-        cache: 'maven'
-        server-id: ossrh
-        server-username: MAVEN_USERNAME
-        server-password: MAVEN_PASSWORD
-        gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
-        gpg-passphrase: MAVEN_GPG_PASSPHRASE
+      - name: Set up Apache Maven Central (Overwrite settings.xml)
+        uses: actions/setup-java@v3
+        with: # running setup-java again overwrites the settings.xml
+          java-version: '11'
+          distribution: 'adopt-hotspot'
+          cache: 'maven'
+          server-id: ossrh
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
 
-    - name: Publish to GitHub Packages Apache Maven
-      run: mvn clean deploy -Dgpg.passphrase="${{ secrets.GPG_PASSPHRASE }}"
-      env:
-        MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-        MAVEN_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
-        MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+      - name: Publish to GitHub Packages Apache Maven
+        run: mvn clean deploy -Dgpg.passphrase="${{ secrets.GPG_PASSPHRASE }}"
+        env:
+          MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}