Default Java to 16 for MC 1.17 using AdoptOpenJDK

roles/minecraft/tasks/java.yml

@@ -2,46 +2,35 @@
   apt:
     name: gpg
     state: present
-  when: item.java.version is defined and item.java.version == 8
-  loop: "{{ minecraft }}"
 
 - name: Add AdoptOpenJDK's signing key
   apt_key:
     id: 8ED17AF5D7E675EB3EE3BCE98AC3B29174885C03
     url: https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public
-  when: item.java.version is defined and item.java.version == 8
-  loop: "{{ minecraft }}"
 
 - name: Install AdoptOpenJDK repository
   apt_repository:
     repo: deb https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ buster main
     mode: 0644
     state: present
-  when: item.java.version is defined and item.java.version == 8
-  loop: "{{ minecraft }}"
 
-- name: Install Java 8
+- name: Install Java
   apt:
-    name: adoptopenjdk-8-hotspot
+    name: "adoptopenjdk-{{ item.java.version }}-hotspot"
     state: present
-  when: item.java.version is defined and item.java.version == 8
+  when: item.java.version is defined
   loop: "{{ minecraft }}"
 
-- name: Install Java 11
+- name: "Install default Java, version {{ minecraft_java }}"
   apt:
-    name: openjdk-11-jre
+    name: "{{ minecraft_java_pkg }}"
     state: present
-  when: item.java.version is not defined or item.java.version == 11
+  when: item.java.version is not defined
   loop: "{{ minecraft }}"
+  register: minecraft_java_default
 
-- name: Activate Java 8
+- name: "Activate default Java, version {{ minecraft_java }}"
   alternatives:
     name: java
-    path: /usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/bin/java
-  when: minecraft_java == 8
-
-- name: Activate Java 11
-  alternatives:
-    name: java
-    path: /usr/lib/jvm/java-11-openjdk-amd64/bin/java
-  when: minecraft_java == 11
+    path: "/usr/lib/jvm/{{ minecraft_java_pkg }}-amd64/bin/java"
+  when: minecraft_java_default.changed