[Item 12] toString() vs. localization

[mikaelstaldal]

I think there is one point about toString() which could be worth being mentioned in Item 12.

• You should not misuse toString() for displaying objects in a user interface, since that will preclude localization. Rather use java.text.MessageFormat or something similar for that purpose.

This is also highlighted in the text which says that phone numbers have a standard string representation. This "standard" is actually only valid in US, Canada and the other countries with country code 1. Elsewhere in the world, phone numbers looks different.