The PATH is the system variable that your operating system uses to locate needed executables from the command line or Terminal window. The PATH system variable can be set using System Utility in control panel on Windows, or in your shell's startup file on Linux and Solaris.
The Maps API key is based on a short form of your application's digital certificate, known as its SHA-1 fingerprint. The fingerprint is a unique text string generated from the commonly-used SHA-1 hashing algorithm. Because the fingerprint is itself unique, Google Maps uses it as a way to identify your application.
To setting up Google Maps Android API V2 you need to get API key and register your project to Google APIs Console. For development process you need debug API key to make the map ...