This article introduces Java Class and Class File format.
This article introduces Linux Signal Handling
This article introduces how to build and debug OpenJDK source code
Annotation in java is a marker which associates information with a program element, but has no effect at runtime.
Proxy in java allows dynamic creation of class at runtime.
Domain Name System(DNS) is a hierarchical and distributed name service that provides a naming system for computers, resources and other resources on the IP network.