How can I get a Unicode character s code

Question

Let s say I have this   char registered           or an umlaut  or whatever unicode character  How could I get its code

User · Answer

In Java  char is technically a  16-bit integer   so you can simply cast it to int and you ll get it s code  From Oracle      The char data type is a single 16-bit Unicode character  It has a   minimum value of   u0000   or 0  and a maximum value of   uffff   or   65 535 inclusive     So you can simply cast it to int   char registered         System out println String format  This is an int-code   d    int  registered    System out println String format  And this is an hexa code   x    int  registered

User · Answer

Just convert it to int   char registered         int code    int  registered    In fact there s an implicit conversion from char to int so you don t have to specify it explicitly as I ve done above  but I would do so in this case to make it obvious what you re trying to do   This will give the UTF-16 code unit - which is the same as the Unicode code point for any character defined in the Basic Multilingual Plane   And only BMP characters can be represented as char values in Java   As Andrzej Doyle s answer says  if you want the Unicode code point from an arbitrary string  use Character codePointAt     Once you ve got the UTF-16 code unit or Unicode code points  but of which are integers  it s up to you what you do with them  If you want a string representation  you need to decide exactly what kind of representation you want   For example  if you know the value will always be in the BMP  you might want a fixed 4-digit hex representation prefixed with U   e g   U 0020  for space   That s beyond the scope of this question though  as we don t know what the requirements are

User · Answer

There is an open source library MgntUtils that has a Utility class StringUnicodeEncoderDecoder  That class provides static methods that convert any String into Unicode sequence vise-versa  Very simple and useful  To convert String you just do  String codes   StringUnicodeEncoderDecoder encodeStringToUnicodeSequence myString    For example a String  quot Hello World quot  will be converted into  quot  u0048 u0065 u006c u006c u006f u0020 u0057 u006f u0072 u006c u0064 quot  It works with any language  Here is the link to the article that explains all te ditails about the library  MgntUtils  Look for the subtitle  quot String Unicode converter quot   The library could be obtained as a Maven artifact or taken from Github  including source code and Javadoc

User · Answer

A more complete  albeit more verbose  way of doing this would be to use the Character codePointAt method   This will handle  high surrogate  characters  that cannot be represented by a single integer within the range that a char can represent   In the example you ve given this is not strictly necessary - if the  Unicode  character can fit inside a single  Java  char  such as the registered local variable  then it must fall within the  u0000 to  uffff range  and you won t need to worry about surrogate pairs   But if you re looking at potentially higher code points  from within a String char array  then calling this method is wise in order to cover the edge cases   For example  instead of  String input        char fifthChar   input charAt 4   int codePoint    int fifthChar    use  String input        int codePoint   Character codePointAt input  4     Not only is this slightly less code in this instance  but it will handle detection of surrogate pairs for you

User · Answer

For me  only  Integer toHexString registered   worked the way I wanted   char registered         System out println  Answer   Integer toHexString registered      This answer will give you only string representations what are usually presented in the tables  Jon Skeet s answer explains more

User · Answer

dear friend  Jon Skeet said you can find character Decimal codebut it is not character Hex code as it should mention in unicode  so you should represent character codes via HexCode not in Deciaml   there is an open source tool at http   unicode codeplex com that provides complete information about a characer or a sentece   so it is better to create a parser that give a char as a parameter and  return ahexCode as string  public static String GetHexCode char character                return String format   0 X4    GetDecimal character           end   hope it help

[java] How can I get a Unicode character's code?

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