Update to Java 17

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [16]  # We only support JDK 16 in master branch
+        java: [17]  # We only support JDK 17 in master branch
         os: [ubuntu-20.04]
     runs-on: ${{ matrix.os }}
     steps:
@@ -29,7 +29,7 @@ jobs:
       - name: build
         run: ./gradlew build
       - name: capture build artifacts
-        if: ${{ runner.os == 'Linux' && matrix.java == '16' }} # Only upload artifacts built from LTS java on one OS
+        if: ${{ runner.os == 'Linux' && matrix.java == '17' }} # Only upload artifacts built from LTS java on one OS
         uses: actions/upload-artifact@v2
         with:
           name: Artifacts

build.gradle

@@ -3,8 +3,8 @@ plugins {
 	id 'maven-publish'
 }
 
-sourceCompatibility = JavaVersion.VERSION_1_8
-targetCompatibility = JavaVersion.VERSION_1_8
+sourceCompatibility = JavaVersion.VERSION_17
+targetCompatibility = JavaVersion.VERSION_17
 
 archivesBaseName = project.archives_base_name
 version = project.mod_version
@@ -35,9 +35,9 @@ tasks.withType(JavaCompile).configureEach {
 	// The Minecraft launcher currently installs Java 8 for users, so your mod probably wants to target Java 8 too
 	// JDK 9 introduced a new way of specifying this that will make sure no newer classes or methods are used.
 	// We'll use that if it's available, but otherwise we'll use the older option.
-	def targetVersion = 8
+	def targetVersion = 17
 	if (JavaVersion.current().isJava9Compatible()) {
-		 it.options.release = targetVersion
+		it.options.release = targetVersion
 	}
 }