HK2 ''(Hundred-Kilobyte Kernel)'' is a light-weight and dynamic
dependency injection framework and is a part of the
GlassFish
GlassFish is an open-source Jakarta EE platform application server project started by Sun Microsystems, then sponsored by Oracle Corporation, and now living at the Eclipse Foundation and supported by Payara, Oracle and Red Hat. The supported v ...
Application Server.
HK2 complies with
JSR 330 (''Dependency Injection for Java''). It has useful utilities for marking classes as services and interfaces as contracts.
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
References
{{GlassFish
Java enterprise platform
Software frameworks