What is the difference between a bus name, and object path, and an interface?
If you imagine a C++ program that implements a network service, then the bus name is the hostname of the computer running this C++ program, the object path is a C++ object instance pointer, and an interface is a C++ class (a pure virtual or abstract class, to be exact). In Java terms, the object path is an object reference, and an interface is a Java interface. People get confused because if they write an application with a single object instance and a single interface, then the bus name, object path, and interface look redundant. For example, you might have a text editor that uses the bus name org.freedesktop.TextEditor, has a global singleton object called /org/freedesktop/TextEditor, and that singleton object could implement the interface org.freedesktop.TextEditor. However, a text editor application could as easily own multiple bus names (for example, org.kde.KWrite in addition to generic TextEditor), have multiple objects (maybe /org/kde/documents/4352 where the number changes acc
