Software: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://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.

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