UCharUtil (JustToolc-码云(gitee.com))

java.lang.Object
- com.lc.utils.UCharUtil

```
public class UCharUtil
extends Object
```
字符工具类
部分工具来自于Apache Commons系列

Since:

0.1

Author:

LC

Field Summary

Fields
Modifier and Type	Field and Description
`static char`	`AMP`
`static char`	`BACKSLASH`
`static char`	`BRACKET_END`
`static char`	`BRACKET_START`
`static char`	`COLON`
`static char`	`COMMA`
`static char`	`CR`
`static char`	`DASHED`
`static char`	`DELIM_END`
`static char`	`DELIM_START`
`static char`	`DOT`
`static char`	`DOUBLE_QUOTES`
`static char`	`LF`
`static char`	`SINGLE_QUOTE`
`static char`	`SLASH`
`static char`	`SPACE`
`static char`	`TAB`
`static char`	`UNDERLINE`

Constructor Summary

Constructors
Constructor and Description

UCharUtil()

Constructors
Constructor and Description
`UCharUtil()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`equals(char c1, char c2, boolean ignoreCase)` 比较两个字符是否相同
`static boolean`	`isAscii(char ch)` 是否为ASCII字符，ASCII字符位于0~127之间
`static boolean`	`isAsciiControl(char ch)` 是否为ASCII控制符（不可见字符），控制符位于0~31和127
`static boolean`	`isAsciiPrintable(char ch)` 是否为可见ASCII字符，可见字符位于32~126之间
`static boolean`	`isBlankChar(char c)` 是否空白符空白符包括空格、制表符、全角空格和不间断空格
`static boolean`	`isBlankChar(int c)` 是否空白符空白符包括空格、制表符、全角空格和不间断空格
`static boolean`	`isChar(Object value)` 给定对象对应的类是否为字符类，字符类包括：
`static boolean`	`isCharClass(Class<?> clazz)` 给定类名是否为字符类，字符类包括：
`static boolean`	`isEmoji(char c)` 判断是否为emoji表情符
`static boolean`	`isFileSeparator(char c)` 是否为Windows或者Linux（Unix）文件分隔符 Windows平台下分隔符为\，Linux（Unix）为/
`static boolean`	`isHexChar(char c)` 是否为16进制规范的字符，判断是否为如下字符
`static boolean`	`isLetter(char ch)` 判断是否为字母（包括大写字母和小写字母）字母包括A~Z和a~z
`static boolean`	`isLetterLower(char ch)` 检查字符是否为小写字母，小写字母指a~z
`static boolean`	`isLetterOrNumber(char ch)` 是否为字符或数字，包括A~Z、a~z、0~9
`static boolean`	`isLetterUpper(char ch)` 判断是否为大写字母，大写字母包括A~Z
`static boolean`	`isNumber(char ch)` 检查是否为数字字符，数字字符指0~9
`static String`	`toString(char c)` 字符转为字符串如果为ASCII字符，使用缓存

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- SPACE
```
public static final char SPACE
```
  See Also:
  
  Constant Field Values
- TAB
```
public static final char TAB
```
  See Also:
  
  Constant Field Values
- DOT
```
public static final char DOT
```
  See Also:
  
  Constant Field Values
- SLASH
```
public static final char SLASH
```
  See Also:
  
  Constant Field Values
- BACKSLASH
```
public static final char BACKSLASH
```
  See Also:
  
  Constant Field Values
- CR
```
public static final char CR
```
  See Also:
  
  Constant Field Values
- LF
```
public static final char LF
```
  See Also:
  
  Constant Field Values
- UNDERLINE
```
public static final char UNDERLINE
```
  See Also:
  
  Constant Field Values
- DASHED
```
public static final char DASHED
```
  See Also:
  
  Constant Field Values
- COMMA
```
public static final char COMMA
```
  See Also:
  
  Constant Field Values
- DELIM_START
```
public static final char DELIM_START
```
  See Also:
  
  Constant Field Values
- DELIM_END
```
public static final char DELIM_END
```
  See Also:
  
  Constant Field Values
- BRACKET_START
```
public static final char BRACKET_START
```
  See Also:
  
  Constant Field Values
- BRACKET_END
```
public static final char BRACKET_END
```
  See Also:
  
  Constant Field Values
- COLON
```
public static final char COLON
```
  See Also:
  
  Constant Field Values
- DOUBLE_QUOTES
```
public static final char DOUBLE_QUOTES
```
  See Also:
  
  Constant Field Values
- SINGLE_QUOTE
```
public static final char SINGLE_QUOTE
```
  See Also:
  
  Constant Field Values
- AMP
```
public static final char AMP
```
  See Also:
  
  Constant Field Values

Constructor Detail
- UCharUtil
```
public UCharUtil()
```

Method Detail

isAscii

public static boolean isAscii(char ch)

是否为ASCII字符，ASCII字符位于0~127之间

   UCharUtil.isAscii('a')  = true
   UCharUtil.isAscii('A')  = true
   UCharUtil.isAscii('3')  = true
   UCharUtil.isAscii('-')  = true
   UCharUtil.isAscii('\n') = true
   UCharUtil.isAscii('©') = false

Parameters:: ch - 被检查的字符处
Returns:: true表示为ASCII字符，ASCII字符位于0~127之间

isAsciiPrintable

public static boolean isAsciiPrintable(char ch)

是否为可见ASCII字符，可见字符位于32~126之间

   UCharUtil.isAsciiPrintable('a')  = true
   UCharUtil.isAsciiPrintable('A')  = true
   UCharUtil.isAsciiPrintable('3')  = true
   UCharUtil.isAsciiPrintable('-')  = true
   UCharUtil.isAsciiPrintable('\n') = false
   UCharUtil.isAsciiPrintable('©') = false

Parameters:: ch - 被检查的字符处
Returns:: true表示为ASCII可见字符，可见字符位于32~126之间

isAsciiControl

public static boolean isAsciiControl(char ch)

是否为ASCII控制符（不可见字符），控制符位于0~31和127

   UCharUtil.isAsciiControl('a')  = false
   UCharUtil.isAsciiControl('A')  = false
   UCharUtil.isAsciiControl('3')  = false
   UCharUtil.isAsciiControl('-')  = false
   UCharUtil.isAsciiControl('\n') = true
   UCharUtil.isAsciiControl('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为控制符，控制符位于0~31和127

isLetter

public static boolean isLetter(char ch)

判断是否为字母（包括大写字母和小写字母）
字母包括A~Z和a~z

   UCharUtil.isLetter('a')  = true
   UCharUtil.isLetter('A')  = true
   UCharUtil.isLetter('3')  = false
   UCharUtil.isLetter('-')  = false
   UCharUtil.isLetter('\n') = false
   UCharUtil.isLetter('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为字母（包括大写字母和小写字母）字母包括A~Z和a~z

isLetterUpper

public static boolean isLetterUpper(char ch)

判断是否为大写字母，大写字母包括A~Z

   UCharUtil.isLetterUpper('a')  = false
   UCharUtil.isLetterUpper('A')  = true
   UCharUtil.isLetterUpper('3')  = false
   UCharUtil.isLetterUpper('-')  = false
   UCharUtil.isLetterUpper('\n') = false
   UCharUtil.isLetterUpper('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为大写字母，大写字母包括A~Z

isLetterLower

public static boolean isLetterLower(char ch)

检查字符是否为小写字母，小写字母指a~z

   UCharUtil.isLetterLower('a')  = true
   UCharUtil.isLetterLower('A')  = false
   UCharUtil.isLetterLower('3')  = false
   UCharUtil.isLetterLower('-')  = false
   UCharUtil.isLetterLower('\n') = false
   UCharUtil.isLetterLower('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为小写字母，小写字母指a~z

isNumber

public static boolean isNumber(char ch)

检查是否为数字字符，数字字符指0~9

   UCharUtil.isNumber('a')  = false
   UCharUtil.isNumber('A')  = false
   UCharUtil.isNumber('3')  = true
   UCharUtil.isNumber('-')  = false
   UCharUtil.isNumber('\n') = false
   UCharUtil.isNumber('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为数字字符，数字字符指0~9

isHexChar
```
public static boolean isHexChar(char c)
```
是否为16进制规范的字符，判断是否为如下字符
```
 1. 0~9
 2. a~f
 4. A~F
 
```
Parameters:

c - 字符

Returns:

是否为16进制规范的字符

isLetterOrNumber

public static boolean isLetterOrNumber(char ch)

是否为字符或数字，包括A~Z、a~z、0~9

   UCharUtil.isLetterOrNumber('a')  = true
   UCharUtil.isLetterOrNumber('A')  = true
   UCharUtil.isLetterOrNumber('3')  = true
   UCharUtil.isLetterOrNumber('-')  = false
   UCharUtil.isLetterOrNumber('\n') = false
   UCharUtil.isLetterOrNumber('©') = false

Parameters:: ch - 被检查的字符
Returns:: true表示为字符或数字，包括A~Z、a~z、0~9

toString
```
public static String toString(char c)
```
字符转为字符串
如果为ASCII字符，使用缓存

Parameters:

c - 字符

Returns:

字符串

See Also:

ASCIIStrCache.toString(char)

isCharClass
```
public static boolean isCharClass(Class<?> clazz)
```
给定类名是否为字符类，字符类包括：
```
 Character.class
 char.class
 
```
Parameters:

clazz - 被检查的类

Returns:

true表示为字符类

isChar
```
public static boolean isChar(Object value)
```
给定对象对应的类是否为字符类，字符类包括：
```
 Character.class
 char.class
 
```
Parameters:

value - 被检查的对象

Returns:

true表示为字符类

isBlankChar
```
public static boolean isBlankChar(char c)
```
是否空白符
空白符包括空格、制表符、全角空格和不间断空格

Parameters:

c - 字符

Returns:

是否空白符

See Also:

Character.isWhitespace(int), Character.isSpaceChar(int)

isBlankChar
```
public static boolean isBlankChar(int c)
```
是否空白符
空白符包括空格、制表符、全角空格和不间断空格

Parameters:

c - 字符

Returns:

是否空白符

See Also:

Character.isWhitespace(int), Character.isSpaceChar(int)

isEmoji
```
public static boolean isEmoji(char c)
```
判断是否为emoji表情符

Parameters:

c - 字符

Returns:

是否为emoji

isFileSeparator
```
public static boolean isFileSeparator(char c)
```
是否为Windows或者Linux（Unix）文件分隔符
Windows平台下分隔符为\，Linux（Unix）为/

Parameters:

c - 字符

Returns:

是否为Windows或者Linux（Unix）文件分隔符

equals

public static boolean equals(char c1,
                             char c2,
                             boolean ignoreCase)

比较两个字符是否相同

Parameters:: c1 - 字符1; c2 - 字符2; ignoreCase - 是否忽略大小写
Returns:: 是否相同

Class UCharUtil

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SPACE

TAB

DOT

SLASH

BACKSLASH

CR

LF

UNDERLINE

DASHED

COMMA

DELIM_START

DELIM_END

BRACKET_START

BRACKET_END

COLON

DOUBLE_QUOTES

SINGLE_QUOTE

AMP

Constructor Detail

UCharUtil

Method Detail

isAscii

isAsciiPrintable

isAsciiControl

isLetter

isLetterUpper

isLetterLower

isNumber

isHexChar

isLetterOrNumber

toString

isCharClass

isChar

isBlankChar

isBlankChar

isEmoji

isFileSeparator

equals