HexFormat (kona-crypto 1.0.7.1 API)

java.lang.Object
- com.tencent.kona.java.util.HexFormat

```
public final class HexFormat
extends java.lang.Object
```
HexFormat converts between bytes and chars and hex-encoded strings which may include additional formatting markup such as prefixes, suffixes, and delimiters.
There are two factories of HexFormat with preset parameters of() and ofDelimiter(delimiter). For other parameter combinations the withXXX methods return copies of HexFormat modified withPrefix(String), withSuffix(String), withDelimiter(String) or choice of withUpperCase() or withLowerCase() parameters.
For primitive to hexadecimal string conversions the toHexDigits methods include toHexDigits(byte), toHexDigits(int), and toHexDigits(long), etc. The default is to use lowercase characters "0-9","a-f". For conversions producing uppercase hexadecimal the characters are "0-9","A-F". Only the HexFormat.isUpperCase() parameter is considered; the delimiter, prefix and suffix are not used.
For hexadecimal string to primitive conversions the fromHexDigits methods include fromHexDigits(string), fromHexDigitsToLong(string), and fromHexDigit(int) converts a single character or codepoint. For conversions from hexadecimal characters the digits and uppercase and lowercase characters in "0-9", "a-f", and "A-F" are converted to corresponding values 0-15. The delimiter, prefix, suffix, and uppercase parameters are not used.
For byte array to formatted hexadecimal string conversions the formatHex methods include formatHex(byte[]) and formatHex(Appendable, byte[]). The formatted output is a string or is appended to an Appendable such as StringBuilder or PrintStream. Each byte value is formatted as the prefix, two hexadecimal characters from the uppercase or lowercase digits, and the suffix. A delimiter follows each formatted value, except the last. For conversions producing uppercase hexadecimal strings use withUpperCase().
For formatted hexadecimal string to byte array conversions the parseHex methods include parseHex(CharSequence) and parseHex(char[], offset, length). Each byte value is parsed from the prefix, two case insensitive hexadecimal characters, and the suffix. A delimiter follows each formatted value, except the last.

Since:

17

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.lang.String`	`delimiter()` Returns the delimiter between hexadecimal values in formatted hexadecimal strings.
`boolean`	`equals(java.lang.Object o)` Returns `true` if the other object is a `HexFormat` with the same parameters.
`<A extends java.lang.Appendable> A`	`formatHex(A out, byte[] bytes)` Appends formatted hexadecimal strings from a byte array to the `Appendable`.
`<A extends java.lang.Appendable> A`	`formatHex(A out, byte[] bytes, int fromIndex, int toIndex)` Appends formatted hexadecimal strings from a byte array range to the `Appendable`.
`java.lang.String`	`formatHex(byte[] bytes)` Returns a hexadecimal string formatted from a byte array.
`java.lang.String`	`formatHex(byte[] bytes, int fromIndex, int toIndex)` Returns a hexadecimal string formatted from a byte array range.
`static int`	`fromHexDigit(int ch)` Returns the value for the hexadecimal character or codepoint.
`static int`	`fromHexDigits(java.lang.CharSequence string)` Returns the `int` value parsed from a string of up to eight hexadecimal characters.
`static int`	`fromHexDigits(java.lang.CharSequence string, int fromIndex, int toIndex)` Returns the `int` value parsed from a string range of up to eight hexadecimal characters.
`static long`	`fromHexDigitsToLong(java.lang.CharSequence string)` Returns the long value parsed from a string of up to sixteen hexadecimal characters.
`static long`	`fromHexDigitsToLong(java.lang.CharSequence string, int fromIndex, int toIndex)` Returns the long value parsed from a string range of up to sixteen hexadecimal characters.
`int`	`hashCode()` Returns a hashcode for this `HexFormat`.
`static boolean`	`isHexDigit(int ch)` Returns `true` if the character is a valid hexadecimal character or codepoint.
`boolean`	`isUpperCase()` Returns `true` if the hexadecimal digits are uppercase, otherwise `false`.
`static HexFormat`	`of()` Returns a hexadecimal formatter with no delimiter and lowercase characters.
`static HexFormat`	`ofDelimiter(java.lang.String delimiter)` Returns a hexadecimal formatter with the delimiter and lowercase characters.
`byte[]`	`parseHex(char[] chars, int fromIndex, int toIndex)` Returns a byte array containing hexadecimal values parsed from a range of the character array.
`byte[]`	`parseHex(java.lang.CharSequence string)` Returns a byte array containing hexadecimal values parsed from the string.
`byte[]`	`parseHex(java.lang.CharSequence string, int fromIndex, int toIndex)` Returns a byte array containing hexadecimal values parsed from a range of the string.
`java.lang.String`	`prefix()` Returns the prefix used for each hexadecimal value in formatted hexadecimal strings.
`java.lang.String`	`suffix()` Returns the suffix used for each hexadecimal value in formatted hexadecimal strings.
`<A extends java.lang.Appendable> A`	`toHexDigits(A out, byte value)` Appends two hexadecimal characters for the byte value to the `Appendable`.
`java.lang.String`	`toHexDigits(byte value)` Returns the two hexadecimal characters for the `byte` value.
`java.lang.String`	`toHexDigits(char value)` Returns the four hexadecimal characters for the `char` value.
`java.lang.String`	`toHexDigits(int value)` Returns the eight hexadecimal characters for the `int` value.
`java.lang.String`	`toHexDigits(long value)` Returns the sixteen hexadecimal characters for the `long` value.
`java.lang.String`	`toHexDigits(long value, int digits)` Returns up to sixteen hexadecimal characters for the `long` value.
`java.lang.String`	`toHexDigits(short value)` Returns the four hexadecimal characters for the `short` value.
`char`	`toHighHexDigit(int value)` Returns the hexadecimal character for the high 4 bits of the value considering it to be a byte.
`char`	`toLowHexDigit(int value)` Returns the hexadecimal character for the low 4 bits of the value considering it to be a byte.
`java.lang.String`	`toString()` Returns a description of the formatter parameters for uppercase, delimiter, prefix, and suffix.
`HexFormat`	`withDelimiter(java.lang.String delimiter)` Returns a copy of this `HexFormat` with the delimiter.
`HexFormat`	`withLowerCase()` Returns a copy of this `HexFormat` to use lowercase hexadecimal characters.
`HexFormat`	`withPrefix(java.lang.String prefix)` Returns a copy of this `HexFormat` with the prefix.
`HexFormat`	`withSuffix(java.lang.String suffix)` Returns a copy of this `HexFormat` with the suffix.
`HexFormat`	`withUpperCase()` Returns a copy of this `HexFormat` to use uppercase hexadecimal characters.

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

- Method Detail
  - of
```
public static HexFormat of()
```
    Returns a hexadecimal formatter with no delimiter and lowercase characters. The delimiter, prefix, and suffix are empty. The methods withDelimiter, withUpperCase, withLowerCase, withPrefix, and withSuffix return copies of formatters with new parameters.
    
    Returns:
    
    a hexadecimal formatter with no delimiter and lowercase characters
  - ofDelimiter
```
public static HexFormat ofDelimiter(java.lang.String delimiter)
```
    Returns a hexadecimal formatter with the delimiter and lowercase characters. The prefix and suffix are empty. The methods withDelimiter, withUpperCase, withLowerCase, withPrefix, and withSuffix return copies of formatters with new parameters.
    
    Parameters:
    
    delimiter - a delimiter, non-null, may be empty
    
    Returns:
    
    a HexFormat with the delimiter and lowercase characters
  - withDelimiter
```
public HexFormat withDelimiter(java.lang.String delimiter)
```
    Returns a copy of this HexFormat with the delimiter.
    
    Parameters:
    
    delimiter - the delimiter, non-null, may be empty
    
    Returns:
    
    a copy of this HexFormat with the delimiter
  - withPrefix
```
public HexFormat withPrefix(java.lang.String prefix)
```
    Returns a copy of this HexFormat with the prefix.
    
    Parameters:
    
    prefix - a prefix, non-null, may be empty
    
    Returns:
    
    a copy of this HexFormat with the prefix
  - withSuffix
```
public HexFormat withSuffix(java.lang.String suffix)
```
    Returns a copy of this HexFormat with the suffix.
    
    Parameters:
    
    suffix - a suffix, non-null, may be empty
    
    Returns:
    
    a copy of this HexFormat with the suffix
  - withUpperCase
```
public HexFormat withUpperCase()
```
    Returns a copy of this HexFormat to use uppercase hexadecimal characters. The uppercase hexadecimal characters are "0-9", "A-F".
    
    Returns:
    
    a copy of this HexFormat with uppercase hexadecimal characters
  - withLowerCase
```
public HexFormat withLowerCase()
```
    Returns a copy of this HexFormat to use lowercase hexadecimal characters. The lowercase hexadecimal characters are "0-9", "a-f".
    
    Returns:
    
    a copy of this HexFormat with lowercase hexadecimal characters
  - delimiter
```
public java.lang.String delimiter()
```
    Returns the delimiter between hexadecimal values in formatted hexadecimal strings.
    
    Returns:
    
    the delimiter, non-null, may be empty ""
  - prefix
```
public java.lang.String prefix()
```
    Returns the prefix used for each hexadecimal value in formatted hexadecimal strings.
    
    Returns:
    
    the prefix, non-null, may be empty ""
  - suffix
```
public java.lang.String suffix()
```
    Returns the suffix used for each hexadecimal value in formatted hexadecimal strings.
    
    Returns:
    
    the suffix, non-null, may be empty ""
  - isUpperCase
```
public boolean isUpperCase()
```
    Returns true if the hexadecimal digits are uppercase, otherwise false.
    
    Returns:
    
    true if the hexadecimal digits are uppercase, otherwise false
  - formatHex
```
public java.lang.String formatHex(byte[] bytes)
```
    Returns a hexadecimal string formatted from a byte array. Each byte value is formatted as the prefix, two hexadecimal characters selected from uppercase or lowercase digits, and the suffix. A delimiter follows each formatted value, except the last. The behavior is equivalent to formatHex(bytes, 0, bytes.length)).
    
    Parameters:
    
    bytes - a non-null array of bytes
    
    Returns:
    
    a string hexadecimal formatting of the byte array
  - formatHex
```
public java.lang.String formatHex(byte[] bytes,
                                  int fromIndex,
                                  int toIndex)
```
    Returns a hexadecimal string formatted from a byte array range. Each byte value is formatted as the prefix, two hexadecimal characters selected from uppercase or lowercase digits, and the suffix. A delimiter follows each formatted value, except the last.
    
    Parameters:
    
    bytes - a non-null array of bytes
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive
    
    Returns:
    
    a string hexadecimal formatting each byte of the array range
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the array range is out of bounds
  - formatHex
```
public <A extends java.lang.Appendable> A formatHex(A out,
                                                    byte[] bytes)
```
    Appends formatted hexadecimal strings from a byte array to the Appendable. Each byte value is formatted as the prefix, two hexadecimal characters selected from uppercase or lowercase digits, and the suffix. A delimiter follows each formatted value, except the last. The formatted hexadecimal strings are appended in zero or more calls to the Appendable methods.
    
    Type Parameters:
    
    A - The type of Appendable
    
    Parameters:
    
    out - an Appendable, non-null
    
    bytes - a byte array
    
    Returns:
    
    the Appendable
    
    Throws:
    
    java.io.UncheckedIOException - if an I/O exception occurs appending to the output
  - formatHex
```
public <A extends java.lang.Appendable> A formatHex(A out,
                                                    byte[] bytes,
                                                    int fromIndex,
                                                    int toIndex)
```
    Appends formatted hexadecimal strings from a byte array range to the Appendable. Each byte value is formatted as the prefix, two hexadecimal characters selected from uppercase or lowercase digits, and the suffix. A delimiter follows each formatted value, except the last. The formatted hexadecimal strings are appended in zero or more calls to the Appendable methods.
    
    Type Parameters:
    
    A - The type of Appendable
    
    Parameters:
    
    out - an Appendable, non-null
    
    bytes - a byte array, non-null
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive.
    
    Returns:
    
    the Appendable
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the array range is out of bounds
    
    java.io.UncheckedIOException - if an I/O exception occurs appending to the output
  - parseHex
```
public byte[] parseHex(java.lang.CharSequence string)
```
    Returns a byte array containing hexadecimal values parsed from the string. Each byte value is parsed from the prefix, two case insensitive hexadecimal characters, and the suffix. A delimiter follows each formatted value, except the last. The delimiters, prefixes, and suffixes strings must be present; they may be empty strings. A valid string consists only of the above format.
    
    Parameters:
    
    string - a string containing the byte values with prefix, hexadecimal digits, suffix, and delimiters
    
    Returns:
    
    a byte array with the values parsed from the string
    
    Throws:
    
    java.lang.IllegalArgumentException - if the prefix or suffix is not present for each byte value, the byte values are not hexadecimal characters, or if the delimiter is not present after all but the last byte value
  - parseHex
```
public byte[] parseHex(java.lang.CharSequence string,
                       int fromIndex,
                       int toIndex)
```
    Returns a byte array containing hexadecimal values parsed from a range of the string. Each byte value is parsed from the prefix, two case insensitive hexadecimal characters, and the suffix. A delimiter follows each formatted value, except the last. The delimiters, prefixes, and suffixes strings must be present; they may be empty strings. A valid string consists only of the above format.
    
    Parameters:
    
    string - a string range containing hexadecimal digits, delimiters, prefix, and suffix.
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive.
    
    Returns:
    
    a byte array with the values parsed from the string range
    
    Throws:
    
    java.lang.IllegalArgumentException - if the prefix or suffix is not present for each byte value, the byte values are not hexadecimal characters, or if the delimiter is not present after all but the last byte value
    
    java.lang.IndexOutOfBoundsException - if the string range is out of bounds
  - parseHex
```
public byte[] parseHex(char[] chars,
                       int fromIndex,
                       int toIndex)
```
    Returns a byte array containing hexadecimal values parsed from a range of the character array. Each byte value is parsed from the prefix, two case insensitive hexadecimal characters, and the suffix. A delimiter follows each formatted value, except the last. The delimiters, prefixes, and suffixes strings must be present; they may be empty strings. A valid character array range consists only of the above format.
    
    Parameters:
    
    chars - a character array range containing an even number of hexadecimal digits, delimiters, prefix, and suffix.
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive.
    
    Returns:
    
    a byte array with the values parsed from the character array range
    
    Throws:
    
    java.lang.IllegalArgumentException - if the prefix or suffix is not present for each byte value, the byte values are not hexadecimal characters, or if the delimiter is not present after all but the last byte value
    
    java.lang.IndexOutOfBoundsException - if the character array range is out of bounds
  - toLowHexDigit
```
public char toLowHexDigit(int value)
```
    Returns the hexadecimal character for the low 4 bits of the value considering it to be a byte. If the parameter isUpperCase() is true the character returned for values 10-15 is uppercase "A-F", otherwise the character returned is lowercase "a-f". The values in the range 0-9 are returned as "0-9".
    
    Parameters:
    
    value - a value, only the low 4 bits 0-3 of the value are used
    
    Returns:
    
    the hexadecimal character for the low 4 bits 0-3 of the value
  - toHighHexDigit
```
public char toHighHexDigit(int value)
```
    Returns the hexadecimal character for the high 4 bits of the value considering it to be a byte. If the parameter isUpperCase() is true the character returned for values 10-15 is uppercase "A-F", otherwise the character returned is lowercase "a-f". The values in the range 0-9 are returned as "0-9".
    
    Parameters:
    
    value - a value, only bits 4-7 of the value are used
    
    Returns:
    
    the hexadecimal character for the bits 4-7 of the value
  - toHexDigits
```
public <A extends java.lang.Appendable> A toHexDigits(A out,
                                                      byte value)
```
    Appends two hexadecimal characters for the byte value to the Appendable. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The hexadecimal characters are appended in one or more calls to the Appendable methods. The delimiter, prefix and suffix are not used.
    
    Type Parameters:
    
    A - The type of Appendable
    
    Parameters:
    
    out - an Appendable, non-null
    
    value - a byte value
    
    Returns:
    
    the Appendable
    
    Throws:
    
    java.io.UncheckedIOException - if an I/O exception occurs appending to the output
  - toHexDigits
```
public java.lang.String toHexDigits(byte value)
```
    Returns the two hexadecimal characters for the byte value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - a byte value
    
    Returns:
    
    the two hexadecimal characters for the byte value
  - toHexDigits
```
public java.lang.String toHexDigits(char value)
```
    Returns the four hexadecimal characters for the char value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - a char value
    
    Returns:
    
    the four hexadecimal characters for the char value
  - toHexDigits
```
public java.lang.String toHexDigits(short value)
```
    Returns the four hexadecimal characters for the short value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - a short value
    
    Returns:
    
    the four hexadecimal characters for the short value
  - toHexDigits
```
public java.lang.String toHexDigits(int value)
```
    Returns the eight hexadecimal characters for the int value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - an int value
    
    Returns:
    
    the eight hexadecimal characters for the int value
    
    See Also:
    
    Integer.toHexString(int)
  - toHexDigits
```
public java.lang.String toHexDigits(long value)
```
    Returns the sixteen hexadecimal characters for the long value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - a long value
    
    Returns:
    
    the sixteen hexadecimal characters for the long value
    
    See Also:
    
    Long.toHexString(long)
  - toHexDigits
```
public java.lang.String toHexDigits(long value,
                                    int digits)
```
    Returns up to sixteen hexadecimal characters for the long value. Each nibble (4 bits) from most significant to least significant of the value is formatted as if by toLowHexDigit(nibble). The delimiter, prefix and suffix are not used.
    
    Parameters:
    
    value - a long value
    
    digits - the number of hexadecimal digits to return, 0 to 16
    
    Returns:
    
    the hexadecimal characters for the long value
    
    Throws:
    
    java.lang.IllegalArgumentException - if digits is negative or greater than 16
  - isHexDigit
```
public static boolean isHexDigit(int ch)
```
    Returns true if the character is a valid hexadecimal character or codepoint. The valid hexadecimal characters are:
    - '0' ('\u0030') through '9' ('\u0039') inclusive,
    - 'A' ('\u0041') through 'F' ('\u0046') inclusive, and
    - 'a' ('\u0061') through 'f' ('\u0066') inclusive.
    Parameters:
    
    ch - a codepoint
    
    Returns:
    
    true if the character is valid a hexadecimal character, otherwise false
  - fromHexDigit
```
public static int fromHexDigit(int ch)
```
    Returns the value for the hexadecimal character or codepoint. The value is:
    - (ch - '0') for '0' through '9' inclusive,
    - (ch - 'A' + 10) for 'A' through 'F' inclusive, and
    - (ch - 'a' + 10) for 'a' through 'f' inclusive.
    Parameters:
    
    ch - a character or codepoint
    
    Returns:
    
    the value 0-15
    
    Throws:
    
    java.lang.NumberFormatException - if the codepoint is not a hexadecimal character
  - fromHexDigits
```
public static int fromHexDigits(java.lang.CharSequence string)
```
    Returns the int value parsed from a string of up to eight hexadecimal characters. The hexadecimal characters are parsed from most significant to least significant using fromHexDigit(int) to form an unsigned value. The value is zero extended to 32 bits and is returned as an int.
    
    Parameters:
    
    string - a CharSequence containing up to eight hexadecimal characters
    
    Returns:
    
    the value parsed from the string
    
    Throws:
    
    java.lang.IllegalArgumentException - if the string length is greater than eight (8) or if any of the characters is not a hexadecimal character
  - fromHexDigits
```
public static int fromHexDigits(java.lang.CharSequence string,
                                int fromIndex,
                                int toIndex)
```
    Returns the int value parsed from a string range of up to eight hexadecimal characters. The characters in the range fromIndex to toIndex, exclusive, are parsed from most significant to least significant using fromHexDigit(int) to form an unsigned value. The value is zero extended to 32 bits and is returned as an int.
    
    Parameters:
    
    string - a CharSequence containing the characters
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive.
    
    Returns:
    
    the value parsed from the string range
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the range is out of bounds for the CharSequence
    
    java.lang.IllegalArgumentException - if length of the range is greater than eight (8) or if any of the characters is not a hexadecimal character
  - fromHexDigitsToLong
```
public static long fromHexDigitsToLong(java.lang.CharSequence string)
```
    Returns the long value parsed from a string of up to sixteen hexadecimal characters. The hexadecimal characters are parsed from most significant to least significant using fromHexDigit(int) to form an unsigned value. The value is zero extended to 64 bits and is returned as a long.
    
    Parameters:
    
    string - a CharSequence containing up to sixteen hexadecimal characters
    
    Returns:
    
    the value parsed from the string
    
    Throws:
    
    java.lang.IllegalArgumentException - if the string length is greater than sixteen (16) or if any of the characters is not a hexadecimal character
  - fromHexDigitsToLong
```
public static long fromHexDigitsToLong(java.lang.CharSequence string,
                                       int fromIndex,
                                       int toIndex)
```
    Returns the long value parsed from a string range of up to sixteen hexadecimal characters. The characters in the range fromIndex to toIndex, exclusive, are parsed from most significant to least significant using fromHexDigit(int) to form an unsigned value. The value is zero extended to 64 bits and is returned as a long.
    
    Parameters:
    
    string - a CharSequence containing the characters
    
    fromIndex - the initial index of the range, inclusive
    
    toIndex - the final index of the range, exclusive.
    
    Returns:
    
    the value parsed from the string range
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the range is out of bounds for the CharSequence
    
    java.lang.IllegalArgumentException - if the length of the range is greater than sixteen (16) or if any of the characters is not a hexadecimal character
  - equals
```
public boolean equals(java.lang.Object o)
```
    Returns true if the other object is a HexFormat with the same parameters.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    o - an object, may be null
    
    Returns:
    
    true if the other object is a HexFormat and the parameters uppercase, delimiter, prefix, and suffix are equal; otherwise false
  - hashCode
```
public int hashCode()
```
    Returns a hashcode for this HexFormat.
    
    Overrides:
    
    hashCode in class java.lang.Object
    
    Returns:
    
    a hashcode for this HexFormat
  - toString
```
public java.lang.String toString()
```
    Returns a description of the formatter parameters for uppercase, delimiter, prefix, and suffix.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    a description of this HexFormat

Class HexFormat

Method Summary

Methods inherited from class java.lang.Object

Method Detail

of

ofDelimiter

withDelimiter

withPrefix

withSuffix

withUpperCase

withLowerCase

delimiter

prefix

suffix

isUpperCase

formatHex

formatHex

formatHex

formatHex

parseHex

parseHex

parseHex

toLowHexDigit

toHighHexDigit

toHexDigits

toHexDigits

toHexDigits

toHexDigits

toHexDigits

toHexDigits

toHexDigits

isHexDigit

fromHexDigit

fromHexDigits

fromHexDigits

fromHexDigitsToLong

fromHexDigitsToLong

equals

hashCode

toString