Java How to Program Fourth Edition - DCC

Chapter 10 Strings and Characters 571
Fig. Fig. 10.17 10.17 static character testing methods and case conversion methods of class
Character (part 3 of 3).
Line 64 uses Character method isDigit to determine whether character c is a
defined Unicode digit. If so, the method returns true; otherwise, it returns false.
Line 66 uses Character method isJavaIdentifierStart to determine
whether c is a character that can be used as the first character of an identifier in Java—i.e.,
a letter, an underscore (_) or a dollar sign ($). If so, the method returns true; otherwise,
it returns false. Line 68 uses method Character method isJavaIdentifier-
Part to determine whether character c is a character that can be used in an identifier in
Java—i.e., a digit, a letter, an underscore (_) or a dollar sign ($). If so, the method returns
true; otherwise, it returns false.
Line 69 uses method Character method isLetter to determine whether character
c is a letter. If so, the method returns true; otherwise, it returns false. Line 71 uses
method Character method isLetterOrDigit to determine whether character c is a
letter or a digit. If so, the method returns true; otherwise, it returns false.
Line 72 uses method Character method isLowerCase to determine whether character
c is a lowercase letter. If so, the method returns true; otherwise, it returns false.
Line 73 uses method Character method isUpperCase to determine whether character
c is an uppercase letter. If so, the method returns true; otherwise, it returns false.
Line 74 uses method Character method toUpperCase to convert the character c
to its uppercase equivalent. The method returns the converted character if the character has
an uppercase equivalent; otherwise, the method returns its original argument. Line 75 uses
method Character method toLowerCase to convert the character c to its lowercase
© Copyright 1992–2002 by Deitel & Associates, Inc. All Rights Reserved. 7/7/01