The goal of this long-running Project is to produce a series of open-source reference implementations of the Java SE Platform, as specified by JSRs in the Java Community Process. The Project ships a feature release every six months according to a strict, time-based model, as proposed.
This release is the Reference Implementation of version 27 of the Java SE Platform, as specified by JSR 402 in the Java Community Process.
The features and schedule of this release were proposed and tracked via the JEP Process, as amended by the JEP 2.0 proposal. The release was produced using the JDK Release Process (JEP 3).
JDK 27 reached General Availability on 15 September 2026. Production-ready binaries under the GPL are available from Oracle; binaries from other vendors will follow shortly.
| Modifier and Type | Module and Description |
|---|---|
| module | java.
Defines the foundational APIs of the Java SE Platform. |
| module | java.
Defines the Language Model, Annotation Processing, and Java Compiler APIs. |
| module | java.
Defines the API for transferring data between and within applications. |
| module | java.
Defines the AWT and Swing user interface toolkits, plus APIs for accessibility, audio, imaging, printing, and JavaBeans. |
| module | java.
Defines services that allow agents to instrument programs running on the JVM. |
| module | java.
Defines the Java Logging API. |
| module | java.
Defines the Java Management Extensions (JMX) API. |
| module | java.
Defines the RMI connector for the Java Management Extensions (JMX) Remote API. |
| module | java.
Defines the Java Naming and Directory Interface (JNDI) API. |
| module | java.
Defines the HTTP Client and WebSocket APIs. |
| module | java.
Defines the Preferences API. |
| module | java.
Defines the Remote Method Invocation (RMI) API. |
| module | java.
Defines the Scripting API. |
| module | java.
Defines the API of the Java SE Platform. |
| module | java.
Defines the Java binding of the IETF Generic Security Services API (GSS-API). |
| module | java.
Defines Java support for the IETF Simple Authentication and Security Layer (SASL). |
| module | java.
Defines the Java Smart Card I/O API. |
| module | java.
Defines the JDBC API. |
| module | java.
Defines the JDBC RowSet API. |
| module | java.
Defines an API for supporting distributed transactions in JDBC. |
| module | java.
Defines the Java APIs for XML Processing (JAXP). |
| module | java.
Defines the API for XML cryptography. |
| module | jdk.
Defines JDK utility classes used by implementors of Assistive Technologies. |
| module | jdk.
Defines the attach API. |
| module | jdk.
Provides |
| module | jdk.
Defines the implementation of the system Java compiler and its command line equivalent, javac. |
| module | jdk.
Provides the implementation of the SunPKCS11 security provider. |
| module | jdk.
Deprecated
for removal since 22.
Provides the implementation of the SunEC security provider.
|
| module | jdk.
Defines the API for dynamic linking of high-level operations on objects. |
| module | jdk.
Provides the implementation of the edit pad service used by |
| module | jdk.
Defines the implementation of the HotSpot Serviceability Agent. |
| module | jdk.
Defines the JDK-specific HTTP server API, and provides the jwebserver tool for running a minimal HTTP server. |
| module | jdk.
Defines an API for expressing computations that can be reliably compiled at runtime into SIMD instructions, such as AVX instructions on x64, and NEON instructions on AArch64. |
| module | jdk.
Internal editor support for JDK tools. |
| module | jdk.
Defines an internal API for monitoring a HotSpot Java Virtual Machine using its shared memory instrumentation buffer |
| module | jdk.
Internal API for line editing |
| module | jdk.
Internal support for Markdown. |
| module | jdk.
Internal option processing API |
| module | jdk.
Defines tools for manipulating Java Archive (JAR) files, including the jar and jarsigner tools. |
| module | jdk.
Defines the implementation of the system documentation tool and its command-line equivalent, javadoc. |
| module | |
| module | jdk.
Defines the JMX graphical tool, jconsole, for monitoring and managing a running application. |
| module | jdk.
Defines tools for analysing dependencies in Java libraries and programs, including the jdeps, javap, jdeprscan, and jnativescan tools. |
| module | jdk.
Defines the Java Debug Interface. |
| module | jdk.
Provides the implementation of the Java Debug Wire Protocol (JDWP) agent. |
| module | jdk.
Defines the API for JDK Flight Recorder. |
| module | |
| module | jdk.
Defines the Java Packaging tool, jpackage. |
| module | jdk.
Provides the jshell tool for evaluating snippets of Java code, and defines a JDK-specific API for modeling and executing snippets. |
| module | jdk.
Deprecated
for removal since 24.
Defines the jstatd tool for starting a daemon
for the jstat tool to monitor JVM statistics remotely.
|
| module | jdk.
Provides the locale data for locales other than US locale. |
| module | jdk.
Defines JDK-specific management interfaces for the JVM. |
| module | jdk.
Defines the JMX management agent. |
| module | jdk.
Defines the Management Interface for JDK Flight Recorder. |
| module | jdk.
Provides the implementation of the DNS Java Naming provider. |
| module | jdk.
Provides the implementation of the RMI Java Naming provider. |
| module | jdk.
Defines the JDK-specific Networking API. |
| module | jdk.
Defines JDK-specific file mapping modes. |
| module | jdk.
Defines the JDK-specific API for SCTP. |
| module | jdk.
Provides implementations of the |
| module | jdk.
Defines JDK extensions to the GSS-API and an implementation of the SASL GSSAPI mechanism. |
| module | |
| module | jdk.
This module is intended for use only by the javafx.swing module for the purpose of FX/Swing interop |
| module | jdk.
Defines the subset of the W3C Document Object Model (DOM) API that is not part of the Java SE API. |
| module | jdk.
Provides the implementation of the ZIP file system provider. |
