Module seppiko.commons.utils
Package org.seppiko.commons.utils

Class CharUtil

java.lang.Object
org.seppiko.commons.utils.CharUtil
All Implemented Interfaces:
Serializable
public class CharUtil extends Object implements Serializable
Character utility
Author:
Leonard Woo
See Also:

  • Field Details

    • NULL

      public static final Character NULL
      NUL or '\0'

    • HORIZONTAL_TABULATION

      public static final Character HORIZONTAL_TABULATION
      HT or '\t'

    • LINE_FEED

      public static final Character LINE_FEED
      LF or '\n'

    • VERTICAL_TABULATION

      public static final Character VERTICAL_TABULATION
      VT or '\v'

    • FORM_FEED

      public static final Character FORM_FEED
      FF or '\f'

    • CARRIAGE_RETURN

      public static final Character CARRIAGE_RETURN
      CR or '\r'

    • CRLF

      public static final String CRLF
      CRLF or "\r\n"

    • DIGIT

      public static final char[] DIGIT
      ISO-LATIN-1(ASCII) digit char array

    • DIGIT_ZERO

      public static final char DIGIT_ZERO
      ISO-LATIN-1(ASCII) digits '0'

    • DIGIT_ONE

      public static final char DIGIT_ONE
      ISO-LATIN-1(ASCII) digits '1'

    • DIGIT_NINE

      public static final char DIGIT_NINE
      ISO-LATIN-1(ASCII) digits '9'

    • UPPERCASE

      public static final char[] UPPERCASE
      All uppercase letters char array

    • UPPERCASE_A

      public static final char UPPERCASE_A
      ISO-LATIN-1(ASCII) uppercase first letter 'A'

    • UPPERCASE_Z

      public static final char UPPERCASE_Z
      ISO-LATIN-1(ASCII) uppercase last letter 'Z'

    • LOWERCASE

      public static final char[] LOWERCASE
      All lowercase letters char array

    • LOWERCASE_A

      public static final char LOWERCASE_A
      ISO-LATIN-1(ASCII) uppercase first letter 'a'

    • LOWERCASE_Z

      public static final char LOWERCASE_Z
      ISO-LATIN-1(ASCII) uppercase last letter 'z'

    • SPACE

      public static final Character SPACE
      ' '

    • EXCLAMATION_MARK

      public static final Character EXCLAMATION_MARK
      '!'

    • QUOTATION_MARK

      public static final Character QUOTATION_MARK
      '"'

    • NUMBER_SIGN

      public static final Character NUMBER_SIGN
      '#'

    • DOLLAR_SIGN

      public static final Character DOLLAR_SIGN
      '$'

    • PERCENT_SIGN

      public static final Character PERCENT_SIGN
      '%'

    • AMPERSAND

      public static final Character AMPERSAND
      '&'

    • APOSTROPHE

      public static final Character APOSTROPHE
      '\\u0027'

    • LEFT_PARENTHESIS

      public static final Character LEFT_PARENTHESIS
      '('

    • RIGHT_PARENTHESIS

      public static final Character RIGHT_PARENTHESIS
      ')'

    • ASTERISK

      public static final Character ASTERISK
      '*'

    • PLUS

      public static final Character PLUS
      '+'

    • COMMA

      public static final Character COMMA
      ','

    • HYPHEN_MINUS

      public static final Character HYPHEN_MINUS
      '-'

    • FULL_STOP

      public static final Character FULL_STOP
      '.'

    • SOLIDUS

      public static final Character SOLIDUS
      '/'

    • COLON

      public static final Character COLON
      ':'

    • SEMICOLON

      public static final Character SEMICOLON
      ';'

    • LESS_THAN_SIGN

      public static final Character LESS_THAN_SIGN
      '<'

    • EQUALS_SIGN

      public static final Character EQUALS_SIGN
      '='

    • GREATER_THAN_SIGN

      public static final Character GREATER_THAN_SIGN
      '>'

    • QUESTION_MARK

      public static final Character QUESTION_MARK
      '?'

    • COMMERCIAL_AT

      public static final Character COMMERCIAL_AT
      '@'

    • LEFT_SQUARE_BRACKET

      public static final Character LEFT_SQUARE_BRACKET
      '['

    • REVERSE_SOLIDUS

      public static final Character REVERSE_SOLIDUS
      '\'

    • RIGHT_SQUARE_BRACKET

      public static final Character RIGHT_SQUARE_BRACKET
      ']'

    • CIRCUMFLEX_ACCENT

      public static final Character CIRCUMFLEX_ACCENT
      '^'

    • LOW_LINE

      public static final Character LOW_LINE
      '_'

    • GRAVE_ACCENT

      public static final Character GRAVE_ACCENT
      '`'

    • LEFT_CURLY_BRACKET

      public static final Character LEFT_CURLY_BRACKET
      '\\u007B'

    • VERTICAL_LINE

      public static final Character VERTICAL_LINE
      '|'

    • RIGHT_CURLY_BRACKET

      public static final Character RIGHT_CURLY_BRACKET
      '\\u007D'

    • TILDE

      public static final Character TILDE
      '~'

    • PUNCTUATION

      public static final char[] PUNCTUATION
      All punctuation char array

    • FULLWIDTH_DIGIT

      public static final char[] FULLWIDTH_DIGIT
      Fullwidth digit char array

    • FULLWIDTH_DIGIT_ZERO

      public static final char FULLWIDTH_DIGIT_ZERO
      Fullwidth digits '０'

    • FULLWIDTH_DIGIT_ONE

      public static final char FULLWIDTH_DIGIT_ONE
      Fullwidth digits '１'

    • FULLWIDTH_DIGIT_NINE

      public static final char FULLWIDTH_DIGIT_NINE
      Fullwidth digits '９'

    • FULLWIDTH_UPPERCASE

      public static final char[] FULLWIDTH_UPPERCASE
      All fullwidth uppercase letters char array

    • FULLWIDTH_UPPERCASE_A

      public static final char FULLWIDTH_UPPERCASE_A
      ISO-LATIN-1(ASCII) uppercase first letter 'Ａ'

    • FULLWIDTH_UPPERCASE_Z

      public static final char FULLWIDTH_UPPERCASE_Z
      ISO-LATIN-1(ASCII) uppercase last letter 'Ｚ'

    • FULLWIDTH_LOWERCASE

      public static final char[] FULLWIDTH_LOWERCASE
      All fullwidth lowercase letters char array

    • FULLWIDTH_LOWERCASE_A

      public static final char FULLWIDTH_LOWERCASE_A
      ISO-LATIN-1(ASCII) uppercase first letter 'ａ'

    • FULLWIDTH_LOWERCASE_Z

      public static final char FULLWIDTH_LOWERCASE_Z
      ISO-LATIN-1(ASCII) uppercase last letter 'ｚ'

    • FULLWIDTH_EXCLAMATION_MARK

      public static final Character FULLWIDTH_EXCLAMATION_MARK
      '！'

    • FULLWIDTH_QUOTATION_MARK

      public static final Character FULLWIDTH_QUOTATION_MARK
      '＂'

    • FULLWIDTH_NUMBER_SIGN

      public static final Character FULLWIDTH_NUMBER_SIGN
      '＃'

    • FULLWIDTH_DOLLAR_SIGN

      public static final Character FULLWIDTH_DOLLAR_SIGN
      '＄'

    • FULLWIDTH_PERCENT_SIGN

      public static final Character FULLWIDTH_PERCENT_SIGN
      '％'

    • FULLWIDTH_AMPERSAND

      public static final Character FULLWIDTH_AMPERSAND
      '＆'

    • FULLWIDTH_APOSTROPHE

      public static final Character FULLWIDTH_APOSTROPHE
      '＇'

    • FULLWIDTH_LEFT_PARENTHESIS

      public static final Character FULLWIDTH_LEFT_PARENTHESIS
      '（'

    • FULLWIDTH_RIGHT_PARENTHESIS

      public static final Character FULLWIDTH_RIGHT_PARENTHESIS
      '）'

    • FULLWIDTH_ASTERISK

      public static final Character FULLWIDTH_ASTERISK
      '＊'

    • FULLWIDTH_PLUS

      public static final Character FULLWIDTH_PLUS
      '＋'

    • FULLWIDTH_COMMA

      public static final Character FULLWIDTH_COMMA
      '，'

    • FULLWIDTH_HYPHEN_MINUS

      public static final Character FULLWIDTH_HYPHEN_MINUS
      '－'

    • FULLWIDTH_FULL_STOP

      public static final Character FULLWIDTH_FULL_STOP
      '．'

    • FULLWIDTH_SOLIDUS

      public static final Character FULLWIDTH_SOLIDUS
      '／'

    • FULLWIDTH_COLON

      public static final Character FULLWIDTH_COLON
      '：'

    • FULLWIDTH_SEMICOLON

      public static final Character FULLWIDTH_SEMICOLON
      '；'

    • FULLWIDTH_LESS_THAN_SIGN

      public static final Character FULLWIDTH_LESS_THAN_SIGN
      '＜'

    • FULLWIDTH_EQUALS_SIGN

      public static final Character FULLWIDTH_EQUALS_SIGN
      '＝'

    • FULLWIDTH_GREATER_THAN_SIGN

      public static final Character FULLWIDTH_GREATER_THAN_SIGN
      '＞'

    • FULLWIDTH_QUESTION_MARK

      public static final Character FULLWIDTH_QUESTION_MARK
      '？'

    • FULLWIDTH_COMMERCIAL_AT

      public static final Character FULLWIDTH_COMMERCIAL_AT
      '＠'

    • FULLWIDTH_LEFT_SQUARE_BRACKET

      public static final Character FULLWIDTH_LEFT_SQUARE_BRACKET
      '［'

    • FULLWIDTH_REVERSE_SOLIDUS

      public static final Character FULLWIDTH_REVERSE_SOLIDUS
      '＼'

    • FULLWIDTH_RIGHT_SQUARE_BRACKET

      public static final Character FULLWIDTH_RIGHT_SQUARE_BRACKET
      '］'

    • FULLWIDTH_CIRCUMFLEX_ACCENT

      public static final Character FULLWIDTH_CIRCUMFLEX_ACCENT
      '＾'

    • FULLWIDTH_LOW_LINE

      public static final Character FULLWIDTH_LOW_LINE
      '＿'

    • FULLWIDTH_GRAVE_ACCENT

      public static final Character FULLWIDTH_GRAVE_ACCENT
      '｀'

    • FULLWIDTH_LEFT_CURLY_BRACKET

      public static final Character FULLWIDTH_LEFT_CURLY_BRACKET
      '｛'

    • FULLWIDTH_VERTICAL_LINE

      public static final Character FULLWIDTH_VERTICAL_LINE
      '｜'

    • FULLWIDTH_RIGHT_CURLY_BRACKET

      public static final Character FULLWIDTH_RIGHT_CURLY_BRACKET
      '｝'

    • FULLWIDTH_TILDE

      public static final Character FULLWIDTH_TILDE
      '～'

    • FULLWIDTH_PUNCTUATION

      public static final char[] FULLWIDTH_PUNCTUATION
      All fullwidth punctuation char array

  • Method Details

    • charsetDecode

      public static CharBuffer charsetDecode(Charset charset, byte[] data)
      Charset decode
      Parameters:
      charset - charset, e.g. StandardCharsets.UTF_8.
      data - byte array.
      Returns:
      character buffer object. If encoding exception capacity is 0.
      See Also:

    • charsetEncode

      public static byte[] charsetEncode(Charset charset, CharBuffer data)
      Charset encode
      Parameters:
      charset - charset, e.g. StandardCharsets.UTF_8.
      data - character buffer.
      Returns:
      byte array. if encoding exception Environment.EMPTY_BYTE_ARRAY.
      See Also:

    • convertBytes

      public static char[] convertBytes(byte[] data)
      Convert byte array to HEX char array.
      Parameters:
      data - byte array data.
      Returns:
      hex char array.

    • isDigit

      public static boolean isDigit(char ch)
      Determines if the specified character is a digit.

      Some Unicode character ranges that contain digits:

      • '\u0030' through '\u0039', ISO-LATIN-1 digits ('0' through '9')
      • '\uFF10' through '\uFF19', Fullwidth digits ('０' through '９')
      Parameters:
      ch - the character to be tested.
      Returns:
      true, if the character is a digit; false, otherwise.

    • isFullStop

      public static boolean isFullStop(char ch)
      Determines if the specified character is a full stop.
      • '\u002E', ISO-LATIN-1 full stop ('.'
      • '\uFF0E', Fullwidth digits ('．'
      Parameters:
      ch - the character to be tested.
      Returns:
      true, if the character is a digit; false, otherwise.

    • findIndex

      public static int findIndex(char c, char[] chars)
      Find character index in character array.
      Parameters:
      c - character.
      chars - character array.
      Returns:
      index, -1 is not found.

    • findIndex

      public static int findIndex(char c, CharSequence cs)
      Find character index in character sequence.
      Parameters:
      c - character.
      cs - character sequence.
      Returns:
      index, -1 is not found.