The syntax of a wiki word is Camel Case: an alternating pattern of upper and lower case letters. Strictly speaking a wiki word is a string of two more more capital letters with lower case letters or numbers between them.

• BobMartin[?] is a wiki word.
• SalesReport1972[?] is a wiki word.
• USAforEver is not, because there are two capitals in a row.
• Usa1776 is not because there is only one capital.
• RcM[?] is a wiki word because it is two or more capitals separated by lower case letters.
• ItDoesNotMatterHowManyCapitalsThereAreYouCanHave1000IfYouLike[?] is a wiki word with lots of capitals.

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The Java Regular expression that we are using to represent a wiki word is:

\b[A-Z](?:[a-z0-9]+[A-Z][a-z0-9]*)+