HK2 DI Kernel

HK2
Developer(s)	Oracle Corporation
Stable release	2.4.0
Operating system	Cross-platform
Available in	Java 6 or Higher
Type	Dependency Injection Kernel
License	CDDL version 1.0 and GPL v2 license
Website	https://hk2.java.net/2.4.0-b27/

HK2 (Hundred-Kilobyte Kernel) is a light-weight and dynamic dependency injection framework and is a part of the GlassFish Application Server.

HK2 complies with JSR 330 (Dependency Injection for Java). It has useful utilities for marking classes as services and interfaces as contracts.^[1]

Some of the features of HK2 DI Kernel are

Custom scopes
use of proxies
Custom injection resolution
Assisted injection
J-I-T injection resolution
Custom validation and security
Run Level Services^[2]

References

GlassFish Server Stack

Core	GlassFish Samples Grizzly Metro Jersey OpenMQ SailFin Shoal HK2

Web Components	JSP Expression Language JSTL JSF JSF Templates WoodStock Phobos WebSockets LRWP in Java

Web Services	JAX-WS WSIT JAXB JAXP Wiseman

Tools	Hudson Japex OpenInstaller IDE plugins WS Monitor License tools

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