GlassFish HK2

HK2

Developer(s)	Oracle Corporation
Stable release	2.4.0
Repository	github.com/eclipse-ee4j/glassfish-hk2
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://javaee.github.io/hk2/

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[1]

References

1. "HK2 - Dependency Injection Kernel". javaee.github.io. Retrieved 2017-11-19.