Add JDK 17.

Signed-off-by: dblock <dblock@dblock.org>

.github/workflows/test.yml

@@ -0,0 +1,40 @@
+name: Build and Test JDK 17
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - "*"
+
+jobs:
+  build:
+
+    name: Build and Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'temurin'
+          java-version: 11
+
+      - name: Build 
+        run: |
+          ./gradlew build --build-cache
+
+      - name: Setup Java 17
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'temurin'
+          java-version: 17
+
+      - name: Test 
+        run: |
+          ./gradlew test --build-cache
+
+