模块 iofairy.functional

程序包 com.iofairy.string

类 Ascii

java.lang.Object

com.iofairy.string.Ascii

public final class Ascii
extends Object

ASCII characters

从以下版本开始:

0.3.0

字段概要

字段

限定符和类型	字段	说明
static char	NUL	ASCII null control character: 00 '\0' (NUL)

构造器概要

构造器

限定符	构造器	说明
private	Ascii()

方法概要

限定符和类型	方法	说明
static int[]	countCases(CharSequence str)	Counts how many times the upper letter and lower letter and not letter occurrences in the given string.
static boolean	isAscii(char c)	Whether the character is an ASCII character
static boolean	isControlAscii(char c)	Whether the character is a Control ASCII character
static boolean	isLetter(char c)	Whether the character is a Letter (a-z,A-Z)
static boolean	isNumber(char c)	Whether the character is a Number (0-9)
static boolean	isPrintableAscii(char c)	Whether the character is a Printable ASCII character
static char	toLower(char c)	Convert uppercase character to lowercase
static String	toLower(String str)	Convert all uppercase characters to lowercase
static String	toLowerFirstChar(String str)	Convert first character in String to Lower.
static char	toUpper(char c)	Convert lowercase character to uppercase
static String	toUpper(String str)	Convert all lowercase characters to uppercase
static String	toUpperFirstChar(String str)	Convert first character in String to Upper.
static int	upperOrLowerOrNot(char c)	Indicates the character is a Upper ASCII Letter (A-Z) or Lower ASCII Letter (a-z) or Not ASCII Letter.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

NUL

public static final char NUL

ASCII null control character: 00 '\0' (NUL)

另请参阅:

常量字段值

构造器详细资料

Ascii

private Ascii()

方法详细资料

isAscii

public static boolean isAscii(char c)

Whether the character is an ASCII character

参数:

c - input character

返回:

true if character is an ASCII, otherwise, return false

从以下版本开始:

0.3.0

isPrintableAscii

public static boolean isPrintableAscii(char c)

Whether the character is a Printable ASCII character

参数:

c - input character

返回:

true if character is a Printable ASCII, otherwise, return false

从以下版本开始:

0.3.0

isControlAscii

public static boolean isControlAscii(char c)

Whether the character is a Control ASCII character

参数:

c - input character

返回:

true if character is a Control ASCII, otherwise, return false

从以下版本开始:

0.3.0

isLetter

public static boolean isLetter(char c)

Whether the character is a Letter (a-z,A-Z)

参数:

c - input character

返回:

true if character is a Letter (a-z,A-Z), otherwise, return false

从以下版本开始:

0.3.0

isNumber

public static boolean isNumber(char c)

Whether the character is a Number (0-9)

参数:

c - input character

返回:

true if character is a Number (0-9), otherwise, return false

从以下版本开始:

0.3.0

upperOrLowerOrNot

public static int upperOrLowerOrNot(char c)

Indicates the character is a Upper ASCII Letter (A-Z) or Lower ASCII Letter (a-z) or Not ASCII Letter.

• -1: The character is Not a ASCII Letter;
• 0: The character is a Lower ASCII Letter (a-z);
• 1: The character is a Upper ASCII Letter (A-Z).

参数:

c - input character

返回:

• -1: The character is Not a ASCII Letter;
• 0: The character is a Lower ASCII Letter (a-z);
• 1: The character is a Upper ASCII Letter (A-Z).

从以下版本开始:

0.3.0

toUpper

public static char toUpper(char c)

Convert lowercase character to uppercase

参数:

c - input character

返回:

uppercase character or original character

从以下版本开始:

0.3.0

toLower

public static char toLower(char c)

Convert uppercase character to lowercase

参数:

c - input character

返回:

uppercase character or original character

从以下版本开始:

0.3.0

toUpper

public static String toUpper(String str)

Convert all lowercase characters to uppercase

参数:

str - string

返回:

uppercase string

从以下版本开始:

0.3.0

toLower

public static String toLower(String str)

Convert all uppercase characters to lowercase

参数:

str - string

返回:

lowercase string

从以下版本开始:

0.3.0

toUpperFirstChar

public static String toUpperFirstChar(String str)

Convert first character in String to Upper.

参数:

str - string

返回:

string

从以下版本开始:

0.3.0

toLowerFirstChar

public static String toLowerFirstChar(String str)

Convert first character in String to Lower.

参数:

str - string

返回:

string

从以下版本开始:

0.3.0

countCases

public static int[] countCases(CharSequence str)

Counts how many times the upper letter and lower letter and not letter occurrences in the given string.

Examples:

 Ascii.countCases("$%^678 AblkjAE hhByyZ");  // returns [5, 8, 8];
                                             // upperCount: 5, lowerCount: 8, notLetterCount: 8
 

参数:

str - string

返回:

int[]{upperCount, lowerCount, notLetterCount}

从以下版本开始:

0.3.0