It creates a string that has upper case characters where the original has lower case characters.
"Room with a View".toUpperCase()
results in the creation of a new string
"ROOM WITH A VIEW"
The finite-state transducer at right does this. Each state transition is labeled
input character(s) : output character
For example the label
that if the current input character is
a, make the
state transition and output the character
Ranges of characters are labeled like
a-z : A-Z
which means to make the state transition for a lower
case letter and output the corresponding upper case letter.
Sometimes a transition is labeled:
input character(s) : action
This means to make the state transition for the indicated character(s) and perform the action.
Are there times when you would want to output NO character, even though you have consumed an input character?