Как найти код символа java

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, both 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.

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.

answered Jan 5, 2010 at 14:25

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));

answered Apr 15, 2013 at 19:16

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.

answered Jul 21, 2015 at 12:00

Michael GantmanMichael Gantman

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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

char is actually a numeric type containing the unicode value (UTF-16, to be exact – you need two chars to represent characters outside the BMP) of the character. You can do everything with it that you can do with an int.

Character.getNumericValue() tries to interpret the character as a digit.

answered Dec 1, 2010 at 21:27

You can use the codePointAt(int index) method of java.lang.String for that. Here’s an example:

"a".codePointAt(0) --> 97
"é".codePointAt(0) --> 233

If you want to avoid creating strings unnecessarily, the following works as well and can be used for char arrays:

Character.codePointAt(new char[] {'a'},0)

answered Dec 1, 2010 at 21:34

Those “UTF-8” codes are no such thing. They’re actually just Unicode values, as per the Unicode code charts.

So an ‘é’ is actually U+00E9 – in UTF-8 it would be represented by two bytes { 0xc3, 0xa9 }.

Now to get the Unicode value – or to be more precise the UTF-16 value, as that’s what Java uses internally – you just need to convert the value to an integer:

char c = 'u00e9'; // c is now e-acute
int i = c; // i is now 233

answered Dec 1, 2010 at 21:29

answered Dec 1, 2010 at 21:27

AnonAnon

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connelblazeconnelblaze

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Michael GantmanMichael Gantman

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