Java Reference
In-Depth Information
Example Domain
Throughout the topic, examples are structured around a common problem domain: music.
Specifically, the examples represent the kind of information you might see on albums. Here's
a brief summary of the terms:
Artist
An individual or group who creates music
▪
name
: The name of the artist (e.g., “The Beatles”)
▪
members
: A set of other artists who comprise this group (e.g., “John Lennon”); this
field might be empty
▪
origin
: The primary location of origin of the group (e.g., “Liverpool”).
Track
A single piece of music
▪
name
: The name of the track (e.g., “Yellow Submarine”)
Album
A single release of music, comprising several tracks
▪
name
: The name of the album (e.g., “Revolver”)
▪
tracks
: A list of tracks
▪
musicians
: A list of artists who helped create the music on this album
This domain is used to illustrate how to use functional programming techniques within a nor-
mal business domain or Java application. You may not consider it the perfect example sub-
ject, but it's simple, and many of the code examples in this topic will bear similarity to those
that you may see in your business domain.
