The most basic rule of GNU Make and the environment is that any variable set in the environment when GNU Make is started will be available as a GNU Make macro inside the Makefile. For example, if FOO is set in the environment to foo when GNU Make is run then the following Makefile: $(warning $(FOO))
Object and Class Structures,
Type Checking and New Types,
Initializing a New Class,
GtkArg and the Type System,
Object Arguments,
Signals,
Object Finalization,
Attaching Data to Objects
In this excerpt, one of a series from Java Network Programming, 3rd Edition, Elliotte Rusty Harold demonstrates Java's handling of URLs, URIs, proxy servers, password protection, and HTTP GET.
S. Ahmad, A. Battle, Z. Malkani, und S. Kamvar. Proceedings of the 24th annual ACM symposium on User interface software and technology, Seite 53--64. New York, NY, USA, ACM, (2011)