Java 16 (#428)

* Java 16 update

* Updated maven versions

* Java 11

* Java 16 build

.github/workflows/build.yml

@@ -14,10 +14,10 @@ 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 16
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 16
       - name: Cache SonarCloud packages
         uses: actions/cache@v1
         with:

pom.xml

@@ -54,11 +54,11 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
+        <java.version>16</java.version>
         <!-- Non-minecraft related dependencies -->
-        <powermock.version>2.0.2</powermock.version>
+        <powermock.version>2.0.9</powermock.version>
         <!-- More visible way how to change dependency versions -->
-        <spigot.version>1.16.1-R0.1-SNAPSHOT</spigot.version>
+        <spigot.version>1.17-R0.1-SNAPSHOT</spigot.version>
         <bentobox.version>1.17.0-SNAPSHOT</bentobox.version>
         <!-- Revision variable removes warning about dynamic version -->
         <revision>${build.version}-SNAPSHOT</revision>
@@ -165,7 +165,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>3.0.0</version>
+            <version>3.11.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -245,14 +245,18 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.7.0</version>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
+                    <release>${java.version}</release>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.0</version>
+                <version>3.0.0-M5</version>
+                <configuration>
+                    <argLine>
+                        --illegal-access=permit
+                    </argLine>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
@@ -262,15 +266,19 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.0.1</version>
+                <version>3.3.0</version>
                 <configuration>
-                    <show>public</show>
+                    <source>8</source>
+                    <show>private</show>
                     <failOnError>false</failOnError>
                     <additionalJOption>-Xdoclint:none</additionalJOption>
+                    <!-- To compile with Java 11, this tag may be required -->
+                    <javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>
                 </configuration>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>
+                        <phase>install</phase>
                         <goals>
                             <goal>jar</goal>
                         </goals>

src/main/resources/plugin.yml

@@ -1,7 +1,7 @@
 name: BSkyBlock
 main: world.bentobox.bskyblock.BSkyBlockPladdon
 version: ${version}
-api-version: 1.16
+api-version: 1.17
 description: A SkyBlock Plugin
 author: tastybento
 depend: