PR #211: Adds openjdk-21-jdk @Warfront1

Author: Warfront1

.github/workflows/docker-image.yml

@@ -149,6 +149,9 @@ jobs:
 
         echo "Test jenv recognizes Java 17"
         docker run --rm ${{ env.IMAGE_NAME}}:${{ env.TAG}} bash -c 'jenv local 17 && java -version'
+        
+        echo "Test jenv recognizes Java 21"
+        docker run --rm ${{ env.IMAGE_NAME}}:${{ env.TAG}} bash -c 'jenv local 21 && java -version'
 
         docker run -v `pwd`:/project --rm ${{ env.IMAGE_NAME}}:${{ env.TAG}} bash -c 'echo "Current directory: $PWD"'
 

.gitignore

@@ -0,0 +1,2 @@
+# Ignore settings for JetBrains IDEs (e.g., IntelliJ, PyCharm, WebStorm)
+.idea/

COMPATIBILITY.md

@@ -7,15 +7,17 @@ Note: 1.23.0 is *not* on Docker Hub.
 
 ## Installed Java Versions Matrix
 
-Java 8 (1.8), Java 11, and Java 17 are installed.
-
-| docker-android-build-box version  | Date released  | Java default  | 8 | 11 | 16 | 17 | 21 |
-|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
-| ≤1.19 | 2 July 2020<br> and earlier  | 8 | ✅<!--8--> | ❌<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
-| 1.20<br>-<br>1.22  | 7 August 2020<br>-<br>23 Aug 2021  | 8 | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
-| 1.23.0  | 23 Sept 2021  | 11 | ✅<!--8--> | ✅<!--11--> | ✅<!--16--> | ❌<!--17--> | ❌<!--21--> |
-| 1.23.1  | 28 September 2021  | 11 | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
-| 1.25.0 | 21 February 2023 | 17 | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ✅<!--17--> | ❌<!--21--> |
+Java 8 (1.8), Java 11, Java 17, and Java 21 are installed.
+
+| docker-android-build-box version |           Date released           | Java default | 8 | 11 | 16 | 17 | 21 |
+|:--------------------------------:|:---------------------------------:|:------------:|:-:|:-:|:-:|:-:|:-:|
+|              ≤1.19               |    2 July 2020<br> and earlier    |      8       | ✅<!--8--> | ❌<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
+|        1.20<br>-<br>1.22         | 7 August 2020<br>-<br>23 Aug 2021 |      8       | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
+|              1.23.0              |           23 Sept 2021            |      11      | ✅<!--8--> | ✅<!--11--> | ✅<!--16--> | ❌<!--17--> | ❌<!--21--> |
+|              1.23.1              |         28 September 2021         |      11      | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ❌<!--17--> | ❌<!--21--> |
+|              1.25.0              |         21 February 2023          |      17      | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ✅<!--17--> | ❌<!--21--> |
+|              1.29.0              |                TBD                |      21      | ✅<!--8--> | ✅<!--11--> | ❌<!--16--> | ✅<!--17--> | ✅<!--21--> |
+
 
 ## Android Platform SDK Versions Matrix
 

Dockerfile

@@ -123,6 +123,7 @@ RUN apt-get update -qq > /dev/null && \
         openjdk-8-jdk \
         openjdk-11-jdk \
         openjdk-17-jdk \
+        openjdk-21-jdk \
         openssh-client \
         pkg-config \
         ruby-full \
@@ -208,8 +209,9 @@ RUN . ~/.bash_profile && \
     jenv add /usr/lib/jvm/java-8-openjdk-$JDK_PLATFORM && \
     jenv add /usr/lib/jvm/java-11-openjdk-$JDK_PLATFORM && \
     jenv add /usr/lib/jvm/java-17-openjdk-$JDK_PLATFORM && \
+    jenv add /usr/lib/jvm/java-21-openjdk-$JDK_PLATFORM && \
     jenv versions && \
-    jenv global 17.0 && \
+    jenv global 21 && \
     java -version
 
 #----------~~~~~~~~~~*****

README.md

@@ -20,6 +20,7 @@ The last **tagged** release includes the following components:
   * 8 (1.8)
   * 11
   * 17
+  * 21
 * Android SDKs for platforms:
   * 28
   * 29