Java Reference
In-Depth Information
were the same except for possible differences in case. The case conver-
sion methods are:
public static
codePoint
toLowerCase(
codePoint
ch)
Returns the lowercase character equivalent of
ch
. If there is
no lowercase equivalent,
ch
is returned.
public static
codePoint
toUpperCase(
codePoint
ch)
Returns the uppercase character equivalent of
ch
. If there is
no uppercase equivalent,
ch
is returned.
public static
codePoint
toTitleCase(
codePoint
ch)
Returns the titlecase character equivalent of
ch.
If there is no
titlecase equivalent, the result of
toUpperCase(ch)
is returned.
The
Character
class has many methods to test whether a given character
is of a particular type in any Unicode character set (for example,
isDigit
recognizes digits in Ethiopic and Khmer). The methods are passed a
char
or
int
code point and return a
boolean
that answers a question. These
methods are:
Method
Is the Character…
a defined Unicode character?
isDefined
a digit?
isDigit
ignorable in any identifier (such as a
direction control directive)?
isIdentifierIgnorable