brew

使用 Homebrew, apt, apk, MacPorts, Nix, chocolatey, winget 安装 openjdk@21

查看 openjdk@21 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。

安装命令安全说明

安装

其他安装命令

macOS

Homebrew已验证 · 100%

brew install openjdk@21

local Homebrew formula metadata

MacPorts已验证 · 94%

sudo port install openjdk21

MacPorts ports tree · java/openjdk21/Portfile · 来源: api.github.com

Linux

Debian apt已验证 · 92%

sudo apt install openjdk-21-dbg

Debian stable package indexes · openjdk-21-dbg · 来源: deb.debian.org

Alpine Linux apk已验证 · 92%

sudo apk add openjdk21

Alpine Linux edge package indexes · openjdk21 · 来源: dl-cdn.alpinelinux.org

Nix已验证 · 92%

nix profile install nixpkgs#openjdk21

nixpkgs package indexes · openjdk21 · 来源: raw.githubusercontent.com

Windows

Chocolatey已验证 · 92%

choco install openjdk

Chocolatey community package catalog · openjdk · 来源: community.chocolatey.org

Windows Package Manager已验证 · 92%

winget install --id Microsoft.OpenJDK.17 -e

Windows Package Manager source index · Microsoft.OpenJDK.17 · 来源: cdn.winget.microsoft.com

概览

软件包摘要

Development kit for the Java programming language

项目链接

命令和别名

本地软件包数据库中没有找到可执行别名。

历史

项目历史与用法

OpenJDK 21 is the open-source reference implementation of Java SE 21. It reached General Availability on 19 September 2023 and became the next major long-term-support Java line after JDK 17, with virtual threads as its headline operational feature.

项目历史

JDK 21 was produced by the OpenJDK JDK Project under the same time-based release model used for earlier post-Java-9 releases. The release implements Java SE 21 as specified by JSR 396 and was tracked through the JEP process.

The feature set shows how the Java platform evolved after JDK 17: virtual threads were finalized, record patterns and pattern matching for switch were delivered, sequenced collections joined the core libraries, Generational ZGC arrived, and several Panama, Amber, Vector, and structured-concurrency features remained preview or incubator work.

采用历史

The OpenJDK release page identifies JDK 21 as a long-term-support release from most vendors. That made it the natural upgrade candidate for teams already on Java 17 that wanted the newer concurrency model, pattern-matching improvements, and garbage-collector work without tracking every six-month feature release.

Virtual threads drove much of the ecosystem attention around JDK 21. The JEP describes them as lightweight threads intended to preserve the simple thread-per-request programming style while improving the scalability of high-throughput server applications, which made the release especially relevant to web frameworks, application servers, observability tools, and JVM operators.

使用方式

The package supplies the complete Java 21 developer kit: compiler, runtime, packaging tools, serviceability tools, jshell, jlink, jpackage, jwebserver, signing tools, and diagnostics. Developers install it to build and run Java 21 applications, test virtual-thread workloads, target Java 21 bytecode, and keep CI environments aligned with a named LTS release.

Operators and build engineers care about openjdk@21 because it offers a pinned Java 21 toolchain independent of the unversioned latest JDK. That is useful for reproducible Maven/Gradle builds, container base images, local development shells, and production systems that certify against a particular Java release family.

为什么软件包爱好者会关心

OpenJDK 21 is where a package entry is more than 'the Java package': it is a versioned runtime contract. The package lets downstream formulas, buildpacks, language servers, and CI runners ask for Java 21 specifically while other software remains on Java 17 or moves to newer feature releases.

For package nerds, the interesting bit is the coexistence problem: a modern workstation or build farm may need JDK 8 for legacy code, JDK 17 for one LTS fleet, and JDK 21 for virtual-thread-capable services. Versioned OpenJDK packages make that matrix explicit.

时间线

19 September 2023: JDK 21 reached General Availability as the Java SE 21 reference implementation.
JDK 19 and JDK 20: virtual threads were delivered as preview features before finalization in JDK 21.
JDK 21 release train: record patterns, pattern matching for switch, virtual threads, sequenced collections, and Generational ZGC landed in one LTS-labeled release.

Related projects

JDK 21 follows the JDK 17 LTS line and precedes later feature releases such as JDK 22 through JDK 25. It is also tied to OpenJDK projects such as Loom for virtual threads, Amber for language features, Panama for foreign-memory and vector work, and ZGC work in HotSpot.

来源

安全态势

尚未找到受保护工具覆盖

没有找到 openjdk@21 的匹配本地密钥处理 manifest。Nucleus 软件包元数据仍在此发布，以便未来覆盖拥有稳定的软件包 URL。

安装行为

formula 元数据中未记录 Homebrew post-install 钩子。
Homebrew bottle 元数据适用于 6 个平台目标。
安装时包含 6 个运行时依赖。
构建元数据列出 2 个构建依赖。

建议审查

在无人值守的代理使用前，请检查该工具是否读取明文凭据、写入远程状态、发布制品或调用插件。

可执行文件

已安装的可执行文件

命令	类型	暴露范围	备注
没有可执行文件数据。

新鲜度

版本和新鲜度

这些信号区分页生成时间、软件包管理器活动和上游发布比较。只有存在证据 URL 和可比较版本时，才会提示版本落后。

页面生成时间2026-07-10

管理器版本21.0.11

管理器更新时间2026-06-25

本地数据OK

上游not checked

检测到的最新版本未检测到

https://github.com/openjdk/jdk21u

信息No cached GitHub release or tag data was available.https://github.com/openjdk/jdk21unone 置信度

安装元数据

软件包元数据

软件包键	brew:openjdk@21
版本	21.0.11
软件包管理器	Homebrew
软件包管理器页面	https://formulae.brew.sh/formula/openjdk@21
主页	https://openjdk.org/
仓库	https://github.com/openjdk/jdk21u
上游文档	https://docs.oracle.com/en/java/javase/21
许可证	GPL-2.0-only WITH Classpath-exception-2.0
源码归档	https://github.com/openjdk/jdk21u/archive/refs/tags/jdk-21.0.11-ga.tar.gz
最后更新	2026-06-25T13:37:59+02:00
Pulse	updated
依赖	freetype, giflib, harfbuzz, jpeg-turbo, libpng, little-cms2
构建依赖	autoconf, pkgconf
Bottle	可用 (于 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	未定义
服务	未声明
注意事项	For the system Java wrappers to find this JDK, symlink it with sudo ln -sfn $HOMEBREW_PREFIX/opt/openjdk@21/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-21.jdk

注册表事实

源数据库详情

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	openjdk@21
Version Scheme	0
Revision	0
Requirements	xcode
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	yes
URL Keys	stable

源数据库匹配

其他软件包管理器记录

匹配项来自外部软件包管理器索引，并与本地 Automic Vault 软件包链接分开显示。

Debian apt95%

openjdk-21-dbg 21.0.11+10-1~deb13u2

Java runtime based on OpenJDK (debugging symbols)