Support: Java 21 (#770)

Author: samruddhikhandale

src/java/.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # This Dockerfile uses separate build arguments instead of VARIANT
-ARG TARGET_JAVA_VERSION=11
+ARG TARGET_JAVA_VERSION=21
 ARG BASE_IMAGE_VERSION_CODENAME=bookworm
 FROM mcr.microsoft.com/devcontainers/base:${BASE_IMAGE_VERSION_CODENAME}
 

src/java/README.md

@@ -9,7 +9,7 @@
 | *Categories* | Core, Languages |
 | *Image type* | Dockerfile |
 | *Published images* | mcr.microsoft.com/devcontainers/java |
-| *Available image variants* | 11 / 11-bookworm, 17 / 17-bookworm, 11-bullseye, 17-bullseye, 11-buster, 17-buster ([full list](https://mcr.microsoft.com/v2/devcontainers/java/tags/list)) |
+| *Available image variants* | 11 / 11-bookworm, 17 / 17-bookworm, 21 / 21-bookworm, 11-bullseye, 17-bullseye, 21-bullseye, 11-buster, 17-buster, 21-buster ([full list](https://mcr.microsoft.com/v2/devcontainers/java/tags/list)) |
 | *Published image architecture(s)* | x86-64, arm64/aarch64 for `bookworm`, and `bullseye` variants |
 | *Container host OS support* | Linux, macOS, Windows |
 | *Container OS* | Debian |
@@ -22,6 +22,7 @@ See **[history](history)** for information on the contents of published images.
 You can directly reference pre-built versions of `Dockerfile` by using the `image` property in `.devcontainer/devcontainer.json` or updating the `FROM` statement in your own  `Dockerfile` to one of the following. An example `Dockerfile` is included in this repository.
 
 - `mcr.microsoft.com/devcontainers/java` (latest)
+- `mcr.microsoft.com/devcontainers/java:21` (or `21-bookworm`, `21-bullseye`, `21-buster` to pin to an OS version)
 - `mcr.microsoft.com/devcontainers/java:11` (or `17-bookworm`, `11-bullseye`, `11-buster` to pin to an OS version)
 - `mcr.microsoft.com/devcontainers/java:17` (or `17-bookworm`, `17-bullseye`, `17-buster` to pin to an OS version)
 

src/java/manifest.json

@@ -1,6 +1,9 @@
 {
 	"version": "1.0.3",
 	"variants": [
+		"21-bookworm",
+		"21-bullseye",
+		"21-buster",
 		"17-bookworm",
 		"17-bullseye",
 		"17-buster",
@@ -9,11 +12,15 @@
 		"11-buster"
 	],
 	"build": {
-		"latest": "17-bookworm",
+		"latest": "21-bookworm",
 		"rootDistro": "debian",
 		"parent": "base-debian",
 		"idMismatch": "true",
 		"variantBuildArgs": {
+			"21-bookworm": {
+				"TARGET_JAVA_VERSION": "21",
+				"BASE_IMAGE_VERSION_CODENAME": "bookworm"
+			},
 			"17-bookworm": {
 				"TARGET_JAVA_VERSION": "17",
 				"BASE_IMAGE_VERSION_CODENAME": "bookworm"
@@ -22,6 +29,10 @@
 				"TARGET_JAVA_VERSION": "11",
 				"BASE_IMAGE_VERSION_CODENAME": "bookworm"
 			},
+			"21-bullseye": {
+				"TARGET_JAVA_VERSION": "21",
+				"BASE_IMAGE_VERSION_CODENAME": "bullseye"
+			},
 			"17-bullseye": {
 				"TARGET_JAVA_VERSION": "17",
 				"BASE_IMAGE_VERSION_CODENAME": "bullseye"
@@ -30,6 +41,10 @@
 				"TARGET_JAVA_VERSION": "11",
 				"BASE_IMAGE_VERSION_CODENAME": "bullseye"
 			},
+			"21-buster": {
+				"TARGET_JAVA_VERSION": "21",
+				"BASE_IMAGE_VERSION_CODENAME": "buster"
+			},
 			"17-buster": {
 				"TARGET_JAVA_VERSION": "17",
 				"BASE_IMAGE_VERSION_CODENAME": "buster"
@@ -40,6 +55,10 @@
 			}
 		},
 		"architectures": {
+			"21-bookworm": [
+				"linux/amd64",
+				"linux/arm64"
+			],
 			"17-bookworm": [
 				"linux/amd64",
 				"linux/arm64"
@@ -48,6 +67,10 @@
 				"linux/amd64",
 				"linux/arm64"
 			],
+			"21-bullseye": [
+				"linux/amd64",
+				"linux/arm64"
+			],
 			"17-bullseye": [
 				"linux/amd64",
 				"linux/arm64"
@@ -56,6 +79,9 @@
 				"linux/amd64",
 				"linux/arm64"
 			],
+			"21-buster": [
+				"linux/amd64"
+			],
 			"17-buster": [
 				"linux/amd64"
 			],
@@ -67,26 +93,36 @@
 			"java:${VERSION}-${VARIANT}"
 		],
 		"variantTags": {
+			"21-bookworm": [
+				"java:${VERSION}-21",
+				"java:${VERSION}-21-jdk-bookworm",
+				"java:${VERSION}-bookworm"
+			],
 			"17-bookworm": [
 				"java:${VERSION}-17",
-				"java:${VERSION}-17-jdk-bookworm",
-				"java:${VERSION}-bookworm"
+				"java:${VERSION}-17-jdk-bookworm"
 			],
 			"11-bookworm": [
 				"java:${VERSION}-11",
 				"java:${VERSION}-11-jdk-bookworm"
 			],
-			"17-bullseye": [
-				"java:${VERSION}-17-jdk-bullseye",
+			"21-bullseye": [
+				"java:${VERSION}-21-jdk-bullseye",
 				"java:${VERSION}-bullseye"
 			],
+			"17-bullseye": [
+				"java:${VERSION}-17-jdk-bullseye"
+			],
 			"11-bullseye": [
 				"java:${VERSION}-11-jdk-bullseye"
 			],
-			"17-jdk-buster": [
-				"java:${VERSION}-17-jdk-buster",
+			"21-jdk-buster": [
+				"java:${VERSION}-21-jdk-buster",
 				"java:${VERSION}-buster"
 			],
+			"17-jdk-buster": [
+				"java:${VERSION}-17-jdk-buster"
+			],
 			"11-buster": [
 				"java:${VERSION}-11-jdk-buster"
 			]