THE PACKAGE JAVA.LANG

java.lang.Character

20.5

[This specification for the method

toUpperCase

 is scheduled for introduction

in Java version 1.1, either as defined here, or updated for Unicode 2.0; see  20.5.

In previous versions of Java, this method returns its argument for all arguments

larger than

\u00FE

. Note that although

\u00FF

 is a lowercase character, its upper 

case equivalent is

\u0178

;

toUpperCase

 in versions of Java prior to version 1.1

simply do not consistently handle or use Unicode character codes above

\u00FF

.]

20.5.22

public static char toTitleCase(char ch)

If the character

ch

 has a titlecase equivalent specified in the Unicode attribute

table, then that titlecase equivalent character is returned; otherwise, the argument

ch

 is returned.

Note that the method

isTitleCase

 ( 20.5.13) will not necessarily return

true

 when given the result of the

toTitleCase

 method. The Unicode attribute

table always has the titlecase attribute equal to the uppercase attribute for charac 

ters that have uppercase equivalents but no separate titlecase form.

Example:

Character.toTitleCase( a )

returns

 A 

Example:

Character.toTitleCase( Q )

returns

 Q 

Example:

Character.toTitleCase( lj )

returns

 Lj 

 where

 lj 

 is the

Unicode character

\u01C9

 and

 Lj 

 is its titlecase equivalent character

\u01C8

.

[This method is scheduled for introduction in Java version 1.1.]

20.5.23

public static int digit(char ch, int radix)

Returns the numeric value of the character

ch

 considered as a digit in the specified

radix. If the value of

radix

 is not a valid radix, or the character

ch

 is not a valid

digit in the specified radix, then

 1

 is returned.

A radix is valid if and only if its value is not less than

Character.MIN_RADIX

( 20.5.3) and not greater than

Character.MAX_RADIX

 ( 20.5.4).

A character is a valid digit if and only if one of the following is true:

The method

isDigit

 returns

true

 for the character, and the decimal digit

value of the character, as specified in the Unicode attribute table, is less than

the specified radix. In this case, the decimal digit value is returned.

The character is one of the uppercase Latin letters

 A 

 Z 

 (

\u0041

\u005A

)

and its code is less than

radix+ A  10

. In this case

ch  A +10

 is returned.

The character is one of the lowercase Latin letters

a

 z 

 (

\u0061

\u007A

)

and its code is less than

radix+ a  10

. In this case

ch  a +10

 is returned.

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