Upgrade to JDK17 (#64)

.github/workflows/build.yml

@@ -1,5 +1,5 @@
 #
-# Copyright 2020 Google LLC
+# Copyright 2023 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -29,10 +29,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
       - name: Cache Gradle packages
         uses: actions/cache@v1
         with:

build.gradle

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2023 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -153,9 +153,15 @@ protobuf {
     }
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
 
-java.sourceCompatibility = JavaVersion.VERSION_11
-java.targetCompatibility = JavaVersion.VERSION_11
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+        vendor = JvmVendorSpec.ADOPTIUM //Eclipse Temurin
+    }
+}
 
 tasks.withType(JavaCompile) {
     options.encoding = "UTF-8"

cloudbuild.yaml

@@ -1,5 +1,5 @@
 steps:
-  - name: gradle:7.4.2-jdk11
+  - name: gradle:8.4-jdk17
     entrypoint: gradle
     args:
       - clean

gradle.properties

@@ -0,0 +1,20 @@
+#
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+org.gradle.jvmargs=--add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED \
+  --add-exports jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED \
+  --add-exports jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED \
+  --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED \
+  --add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED