20.5

java.lang.Character

THE PACKAGE JAVA.LANG

20.5.11

public static boolean isLowerCase(char ch)

The result is

true

 if and only if the character argument is a lowercase character.

A character is considered to be lowercase if and only if all of the following are

true:

The character

ch

 is not in the range

\u2000

 through

\u2FFF

.

The Unicode attribute table does not specify a mapping to lowercase for this

character (the purpose of this requirement is to exclude titlecase characters).

At least one of the following is true:

N

The Unicode attribute table specifies a mapping to uppercase for this char 

acter.

N

The name for the character in the Unicode attribute table contains the words

SMALL LETTER

 or the words

SMALL LIGATURE

.

It follows, then, that for Unicode 1.1.5 as corrected above, the lowercase Uni 

code characters are exactly those with codes in the following list, which contains

both single codes and inclusive ranges:

 0061

007A

,

00DF

00F6

,

00F8

00FF

,

0101

0137

 (odds only),

0138

0148

 (evens only),

0149

0177

 (odds only),

017A

017E

 (evens only),

017F

0180

,

0183

,

0185

,

0188

,

018C

018D

,

0192

,

0195

,

0199

019B

,

019E

,

01A1

01A5

 (odds only),

01A8

,

01AB

,

01AD

,

01B0

,

01B4

,

01B6

,

01B9

01BA

,

01BD

,

01C6

,

01C9

,

01CC

01DC

 (evens only),

01DD

01EF

(odds only),

01F0

,

01F3

,

01F5

,

01FB

0217

 (odds only),

0250

0261

,

0263

0269

,

026B

0273

,

0275

,

0277

027F

,

0282

028E

,

0290

0293

,

029A

,

029D

029E

,

02A0

,

02A3

02A8

,

0390

,

03AC

03CE

,

03D0

03D1

,

03D5

03D6

,

03E3

03EF

(odds only),

03F0

03F1

,

0430

044F

,

0451

045C

,

045E

045F

,

0461

0481

(odds only),

0491

04BF

(odds

only),

04C2

,

04C4

,

04C8

,

04CC

,

04D1

04EB

(odds only),

04EF

04F5

(odds only),

04F9

,

0561

0587

,

1E01

1E95

 (odds only),

1E96

1E9A

,

1EA1

1EF9

 (odds only),

1F00

1F07

,

1F10

1F15

,

1F20

1F27

,

1F30

1F37

,

1F40

1F45

,

1F50

1F57

,

1F60

1F67

,

1F70

1F7D

,

1F80

1F87

,

1F90

1F97

,

1FA0

1FA7

,

1FB0

1FB4

,

1FB6

1FB7

,

1FC2

1FC4

,

1FC6

1FC7

,

1FD0

1FD3

,

1FD6

1FD7

,

1FE0

1FE7

,

1FF2

1FF4

,

1FF6

1FF7

,

FB00

FB06

,

FB13

FB17

,

FF41

FF5A

.

Of the first 128 Unicode characters, exactly 26 are considered to be lower 

case:

abcdefghijklmnopqrstuvwxyz

[This specification for the method

isLowerCase

 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

false

 for all arguments larger

than

\u00FF

.]

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