How to get the code of a General Unicode Category?

Question

How to get the code of a General Unicode Category?

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#1 by (4 votes)
#2 by (1 votes)

6

Java has the method Character.getType(char) to get the General Category Unicode for a character, however the return value is int - corresponding to a constant defined in the class itself Character (ex .: public static final byte LOWERCASE_LETTER - 'General category "in the Unicode specification.'). I need the code for this category, in the format string (ex. : "Ll" ).

Is there a way to convert from constants of Character to this code in string? Or do I have to do the mapping manually? (ie map each numeric constant to your code - such as described in the documentation - not so difficult, but laborious and subject to errors)

java unicode

asked by anonymous 02.05.2014 / 17:27

2 answers

1

I do not think there is a ready method inside Java to do this automatically. The best solution is manual implementation.

Just taking advantage of the topic, to be a future reference for other users, I have already encountered the same problem, but in another language: JavaScript.

At the time, my solution was to adapt the implementation of Mono (C #) to JavaScript, through these three links (worth mentioning that the values of the constants used by Mono are the same values of the constants used by Java):

Char.cs

UnicodeCategory.cs

mono-devel-list

Just for the sake of completeness, my JavaScript code was like this at the time:

"use strict";

window.StringUtils = {
    UnicodeCategory: {
        UppercaseLetter: 0,
        LowercaseLetter: 1,
        TitlecaseLetter: 2,
        ModifierLetter: 3,
        OtherLetter: 4,
        NonSpacingMark: 5,
        SpacingCombiningMark: 6,
        EnclosingMark: 7,
        DecimalDigitNumber: 8,
        LetterNumber: 9,
        OtherNumber: 10,
        SpaceSeparator: 11,
        LineSeparator: 12,
        ParagraphSeparator: 13,
        Control: 14,
        Format: 15,
        Surrogate: 16,
        PrivateUse: 17,
        ConnectorPunctuation: 18,
        DashPunctuation: 19,
        OpenPunctuation: 20,
        ClosePunctuation: 21,
        InitialQuotePunctuation: 22,
        FinalQuotePunctuation: 23,
        OtherPunctuation: 24,
        MathSymbol: 25,
        CurrencySymbol: 26,
        ModifierSymbol: 27,
        OtherSymbol: 28,
        OtherNotAssigned: 29
    },
    UnicodeCategoryStr: [
        "UppercaseLetter",
        "LowercaseLetter",
        "TitlecaseLetter",
        "ModifierLetter",
        "OtherLetter",
        "NonSpacingMark",
        "SpacingCombiningMark",
        "EnclosingMark",
        "DecimalDigitNumber",
        "LetterNumber",
        "OtherNumber",
        "SpaceSeparator",
        "LineSeparator",
        "ParagraphSeparator",
        "Control",
        "Format",
        "Surrogate",
        "PrivateUse",
        "ConnectorPunctuation",
        "DashPunctuation",
        "OpenPunctuation",
        "ClosePunctuation",
        "InitialQuotePunctuation",
        "FinalQuotePunctuation",
        "OtherPunctuation",
        "MathSymbol",
        "CurrencySymbol",
        "ModifierSymbol",
        "OtherSymbol",
        "OtherNotAssigned"
    ],
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    2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2136, 2144, 288, 
    2104, 2152, 2104, 2104, 2160, 2168, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2176, 2104, 2104, 2104, 2184, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    2104, 2104, 2104, 2104, 2192, 288, 288, 288, 2104, 2184, 288, 288, 1944, 1944, 1944, 1944, 1944, 1944, 1944, 2200, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2208, 288, 288, 
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    2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 
    288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 2104, 2104, 2104, 2304, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2128, 288, 
    2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2216, 288, 288, 288, 2104, 2128, 
    2312, 2320, 2328, 2336, 2344, 2352, 2360, 2368, 616, 576, 576, 576, 576, 576, 576, 576, 576, 576, 728, 2376, 616, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 2384, 
    2392, 576, 576, 576, 576, 728, 616, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 1280, 2400, 2104, 576, 576, 576, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    2104, 2104, 2104, 2408, 1944, 2416, 2104, 2104, 2128, 288, 288, 288, 2104, 2104, 2104, 2424, 1944, 2416, 2104, 2104, 2104, 2104, 1072, 288, 2104, 2128, 2104, 2104, 2104, 2104, 2104, 2192, 
    2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2192, 2432, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2104, 2216, 2104, 2104, 2104, 2192, 
    576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 2440, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 2440, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 728, 2104, 2104, 2264, 2104, 2176, 2104, 2448, 288, 288, 288, 288, 288, 288, 288, 
    576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 1504, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 2456, 
    2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 2464, 
    576, 576, 576, 576, 576, 2440, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 
    432, 288, 2472, 2480, 576, 2488, 1280, 2496, 2504, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 1608, 288, 288, 288, 2512, 576, 576, 576, 576, 576, 
    576, 576, 576, 576, 576, 576, 576, 2520, 288, 288, 576, 576, 576, 576, 576, 576, 576, 576, 1288, 576, 576, 576, 576, 576, 576, 288, 288, 288, 288, 288, 576, 1504, 
    288, 288, 288, 288, 2528, 288, 2536, 2544, 2552, 2560, 2568, 2576, 2584, 2592, 2600, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 576, 2608, 
    2616, 16, 24, 32, 40, 48, 48, 56, 64, 72, 72, 2624, 2632, 576, 624, 576, 576, 576, 576, 2640, 576, 576, 576, 1280, 1288, 1288, 1288, 2648, 2656, 2664, 288, 2672 ],
    _strideData: [ 14, 14, 14, 14, 14, 14, 14, 14, 
    11, 24, 24, 24, 26, 24, 24, 24, 
    20, 21, 24, 25, 24, 19, 24, 24, 
    8, 8, 8, 8, 8, 8, 8, 8, 
    8, 8, 24, 24, 25, 25, 25, 24, 
    24, 0, 0, 0, 0, 0, 0, 0, 
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    29, 29, 29, 29, 29, 29, 5, 6, 
    4, 4, 29, 29, 29, 29, 8, 8, 
    28, 29, 29, 29, 29, 29, 29, 29, 
    29, 29, 5, 6, 29, 4, 4, 4, 
    4, 4, 4, 29, 29, 29, 4, 4, 
    4, 29, 4, 4, 4, 4, 29, 29, 
    29, 4, 4, 29, 4, 29, 4, 4, 
    29, 29, 29, 4, 4, 29, 29, 29, 
    4, 4, 4, 4, 4, 4, 29, 4, 
    4, 4, 29, 29, 29, 29, 6, 6, 
    5, 6, 6, 29, 29, 29, 6, 6, 
    6, 29, 6, 6, 6, 5, 29, 29, 
    29, 29, 29, 29, 29, 29, 29, 8, 
    10, 10, 10, 29, 29, 29, 29, 29, 
    29, 6, 6, 6, 29, 4, 4, 4, 
    4, 4, 4, 4, 4, 29, 4, 4, 
    4, 4, 4, 4, 29, 4, 4, 4, 
    4, 4, 29, 29, 29, 29, 5, 5, 
    5, 6, 6, 6, 6, 29, 5, 5, 
    5, 29, 5, 5, 5, 5, 29, 29, 
    29, 29, 29, 29, 29, 5, 5, 29, 
    29, 29, 6, 6, 29, 4, 4, 4, 
    4, 4, 29, 29, 29, 29, 6, 5, 
    6, 6, 6, 6, 6, 29, 5, 6, 
    6, 29, 6, 6, 5, 5, 29, 29, 
    29, 29, 29, 29, 29, 6, 6, 29, 
    29, 29, 29, 29, 29, 29, 4, 29, 
    6, 5, 5, 5, 29, 29, 6, 6, 
    4, 4, 4, 4, 4, 4, 4, 29, 
    29, 29, 4, 4, 4, 4, 4, 4, 
    4, 4, 4, 4, 29, 4, 29, 29, 
    29, 29, 5, 29, 29, 29, 29, 6, 
    6, 6, 5, 5, 5, 29, 5, 29, 
    6, 6, 6, 6, 6, 6, 6, 6, 
    29, 29, 6, 6, 24, 29, 29, 29, 
    4, 5, 4, 4, 5, 5, 5, 5, 
    5, 5, 5, 29, 29, 29, 29, 26, 
    4, 4, 4, 4, 4, 4, 3, 5, 
    5, 5, 5, 5, 5, 5, 5, 24, 
    8, 8, 24, 24, 29, 29, 29, 29, 
    29, 4, 4, 29, 4, 29, 29, 4, 
    4, 29, 4, 29, 29, 4, 29, 29, 
    29, 29, 29, 29, 4, 4, 4, 4, 
    29, 4, 4, 4, 29, 4, 29, 4, 
    29, 29, 4, 4, 29, 4, 4, 4, 
    5, 5, 29, 5, 5, 4, 29, 29, 
    4, 4, 4, 4, 4, 29, 3, 29, 
    8, 8, 29, 29, 4, 4, 29, 29, 
    4, 28, 28, 28, 24, 24, 24, 24, 
    24, 24, 24, 28, 28, 28, 28, 28, 
    5, 5, 28, 28, 28, 28, 28, 28, 
    8, 8, 10, 10, 10, 10, 10, 10, 
    10, 10, 10, 10, 28, 5, 28, 5, 
    28, 5, 20, 21, 20, 21, 6, 6, 
    5, 5, 5, 5, 5, 5, 5, 6, 
    5, 5, 5, 5, 5, 24, 5, 5, 
    4, 4, 4, 4, 29, 29, 29, 29, 
    5, 5, 5, 5, 5, 29, 28, 28, 
    28, 28, 28, 28, 28, 28, 5, 28, 
    28, 28, 28, 28, 28, 29, 29, 28, 
    29, 4, 4, 29, 6, 5, 5, 5, 
    5, 6, 5, 29, 29, 29, 5, 5, 
    6, 5, 29, 29, 29, 29, 29, 29, 
    8, 8, 24, 24, 24, 24, 24, 24, 
    4, 4, 4, 4, 4, 4, 6, 6, 
    5, 5, 29, 29, 29, 29, 29, 29, 
    0, 0, 0, 0, 0, 0, 29, 29, 
    29, 29, 29, 24, 29, 29, 29, 29, 
    4, 4, 29, 29, 29, 29, 29, 4, 
    4, 4, 29, 29, 29, 29, 29, 29, 
    29, 24, 24, 24, 24, 24, 24, 24, 
    24, 8, 8, 8, 8, 8, 8, 8, 
    10, 10, 10, 10, 10, 29, 29, 29, 
    4, 4, 4, 4, 4, 24, 24, 4, 
    11, 4, 4, 4, 4, 4, 4, 4, 
    4, 4, 4, 20, 21, 29, 29, 29, 
    4, 4, 4, 24, 24, 24, 10, 10, 
    10, 29, 29, 29, 29, 29, 29, 29, 
    4, 4, 4, 4, 6, 6, 6, 5, 
    5, 5, 5, 5, 5, 5, 6, 6, 
    6, 6, 6, 6, 6, 6, 5, 6, 
    5, 5, 5, 5, 24, 24, 24, 24, 
    24, 24, 24, 26, 24, 29, 29, 29, 
    8, 8, 29, 29, 29, 29, 29, 29, 
    24, 24, 24, 24, 24, 24, 19, 24, 
    24, 24, 24, 15, 15, 15, 15, 29, 
    4, 4, 4, 3, 4, 4, 4, 4, 
    4, 5, 29, 29, 29, 29, 29, 29, 
    0, 1, 0, 1, 0, 1, 1, 1, 
    29, 0, 29, 0, 29, 0, 29, 0, 
    2, 2, 2, 2, 2, 2, 2, 2, 
    1, 1, 1, 1, 1, 29, 1, 1, 
    0, 0, 0, 0, 2, 27, 1, 27, 
    27, 27, 1, 1, 1, 29, 1, 1, 
    0, 0, 0, 0, 2, 27, 27, 27, 
    1, 1, 1, 1, 29, 29, 1, 1, 
    0, 0, 0, 0, 29, 27, 27, 27, 
    0, 0, 0, 0, 0, 27, 27, 27, 
    29, 29, 1, 1, 1, 29, 1, 1, 
    0, 0, 0, 0, 2, 27, 27, 29, 
    11, 11, 11, 11, 11, 11, 11, 11, 
    11, 11, 11, 11, 15, 15, 15, 15, 
    19, 19, 19, 19, 19, 19, 24, 24, 
    22, 23, 20, 22, 22, 23, 20, 22, 
    12, 13, 15, 15, 15, 15, 15, 11, 
    24, 22, 23, 24, 24, 24, 24, 18, 
    18, 24, 24, 24, 25, 20, 21, 29, 
    24, 24, 24, 24, 24, 24, 29, 29, 
    29, 29, 15, 15, 15, 15, 15, 15, 
    10, 29, 29, 29, 10, 10, 10, 10, 
    10, 10, 25, 25, 25, 20, 21, 1, 
    10, 10, 10, 10, 10, 10, 10, 10, 
    10, 10, 25, 25, 25, 20, 21, 29, 
    26, 26, 26, 26, 26, 26, 26, 26, 
    5, 5, 5, 5, 5, 7, 7, 7, 
    7, 5, 7, 7, 29, 29, 29, 29, 
    28, 28, 0, 28, 28, 28, 28, 0, 
    28, 28, 1, 0, 0, 0, 1, 1, 
    0, 0, 0, 1, 28, 0, 28, 28, 
    28, 0, 0, 0, 0, 0, 28, 28, 
    28, 28, 28, 28, 0, 28, 0, 28, 
    0, 28, 0, 0, 0, 0, 28, 1, 
    0, 0, 28, 0, 1, 4, 4, 4, 
    4, 1, 28, 29, 29, 29, 29, 29, 
    29, 29, 29, 10, 10, 10, 10, 10, 
    9, 9, 9, 9, 9, 9, 9, 9, 
    9, 9, 9, 9, 29, 29, 29, 29, 
    25, 25, 25, 25, 25, 28, 28, 28, 
    28, 28, 25, 25, 28, 28, 28, 28, 
    25, 28, 28, 25, 28, 28, 25, 28, 
    28, 28, 28, 28, 28, 28, 25, 28, 
    28, 28, 28, 28, 28, 28, 28, 28, 
    28, 28, 28, 28, 28, 28, 25, 25, 
    28, 28, 25, 28, 25, 28, 28, 28, 
    28, 28, 28, 28, 29, 29, 29, 29, 
    25, 25, 25, 25, 25, 25, 25, 25, 
    25, 25, 29, 29, 29, 29, 29, 29, 
    25, 25, 25, 25, 28, 28, 28, 28, 
    25, 25, 28, 28, 28, 28, 28, 28, 
    28, 20, 21, 28, 28, 28, 28, 28, 
    28, 28, 28, 28,  29, 28, 
    29, 29, 29, 28, 28, 28, 28, 28, 
    4, 4, 4, 4, 4, 4, 29, 29, 
    28, 29, 28, 28, 28, 29, 28, 29, 
    16, 16, 16, 16, 16, 16, 16, 16, 
    17, 17, 17, 17, 17, 17, 17, 17, 
    29, 29, 29, 1, 1, 1, 1, 1, 
    29, 29, 29, 29, 29, 4, 5, 4, 
    4, 25, 4, 4, 4, 4, 4, 4, 
    4, 4, 4, 4, 4, 29, 4, 29, 
    4, 4, 29, 4, 4, 29, 4, 4, 
    29, 29, 29, 4, 4, 4, 4, 4, 
    4, 4, 4, 4, 4, 4, 20, 21, 
    5, 5, 5, 5, 29, 29, 29, 29, 
    24, 19, 19, 18, 18, 20, 21, 20, 
    21, 20, 21, 20, 21, 20, 21, 20, 
    21, 20, 21, 20, 21, 29, 29, 29, 
    29, 24, 24, 24, 24, 18, 18, 18, 
    24, 24, 24, 29, 24, 24, 24, 24, 
    19, 20, 21, 20, 21, 20, 21, 24, 
    24, 24, 25, 19, 25, 25, 25, 29, 
    24, 26, 24, 24, 29, 29, 29, 29, 
    4, 4, 4, 29, 4, 29, 4, 4, 
    4, 4, 4, 4, 4, 29, 29, 15, 
    29, 24, 24, 24, 26, 24, 24, 24, 
    1, 1, 1, 20, 25, 21, 25, 29, 
    29, 24, 20, 21, 24, 18, 4, 4, 
    4, 4, 4, 4, 4, 4, 3, 3, 
    29, 29, 4, 4, 4, 29, 29, 29, 
    26, 26, 25, 27, 28, 26, 26, 29, 
    28, 25, 25, 25, 25, 28, 28, 29, 
    29, 15, 15, 15, 28, 28, 29, 29 ],
    getUnicodeCategory: function (c) {
        var seg = StringUtils._highByteToSegment[c >>> 8],
        stride = StringUtils._segmentToStride[((c & 0xFF) >>> 3) + (seg << 5)];
        return StringUtils._strideData[(c & 0x07) + stride];
    },
    getUnicodeCategoryStr: function (c) {
        var seg = StringUtils._highByteToSegment[c >>> 8],
        stride = StringUtils._segmentToStride[((c & 0xFF) >>> 3) + (seg << 5)];
        return StringUtils.UnicodeCategoryStr[StringUtils._strideData[(c & 0x07) + stride]];
    },
    isWhiteSpace: function (x) {
        switch (x) {
            case 0x0020:
            case 0x0009:
            case 0x000A:
            case 0x000B:
            case 0x000D:
            case 0x000C:
            case 0x0085:
            case 0x00A0:
            case 0x1680:
            case 0x180E:
            case 0x2000:
            case 0x2001:
            case 0x2002:
            case 0x2003:
            case 0x2004:
            case 0x2005:
            case 0x2006:
            case 0x2007:
            case 0x2008:
            case 0x2009:
            case 0x200A:
            case 0x202F:
            case 0x205F:
            case 0x3000:
            case 0x2028:
            case 0x2029:
                return true;
        }
        return false;
    },
    isDigit: function (c) {
        return (StringUtils.getUnicodeCategory(c) === StringUtils.UnicodeCategory.DecimalDigitNumber);
    },
    isLetter: function (c) {
        return (StringUtils.getUnicodeCategory(c) <= StringUtils.UnicodeCategory.OtherLetter);
    },
    isLetterOrDigit: function (c) {
        var category = StringUtils.getUnicodeCategory(c);
        return (category <= StringUtils.UnicodeCategory.OtherLetter ||
            category === StringUtils.UnicodeCategory.DecimalDigitNumber);
    },
    isNumber: function (c) {
        var category = StringUtils.getUnicodeCategory(c);
        return (category >= StringUtils.UnicodeCategory.DecimalDigitNumber &&
            category <= StringUtils.UnicodeCategory.OtherNumber);
    },
    isSurrogate: function (c) {
        return (StringUtils.getUnicodeCategory(c) === StringUtils.UnicodeCategory.Surrogate);
    }
}
Object.freeze(StringUtils.UnicodeCategory);
Object.freeze(StringUtils.UnicodeCategoryStr);
Object.freeze(StringUtils);

02.05.2014 / 18:39

Doubt with inheritance in Java method Height of the div no load

score 4 · Accepted Answer

I do not know of any function that returns the value as String as you want. And based on several projects I researched in github, the solution found usually involves a mapping that, as you said, is more laborious and subject to errors.

But, anyway, there's a suggestion for a solution:

private static HashMap<Byte, String> type_aliases;
static 
{
    type_aliases = new HashMap<Byte, String>(30);
    type_aliases.put(Character.UNASSIGNED, "Cn");
    type_aliases.put(Character.UPPERCASE_LETTER, "Lu");
    type_aliases.put(Character.LOWERCASE_LETTER, "Ll");
    type_aliases.put(Character.TITLECASE_LETTER, "Lt");
    type_aliases.put(Character.MODIFIER_LETTER, "Lm");
    type_aliases.put(Character.OTHER_LETTER, "Lo");
    type_aliases.put(Character.NON_SPACING_MARK, "Mn");
    type_aliases.put(Character.ENCLOSING_MARK, "Me");
    type_aliases.put(Character.COMBINING_SPACING_MARK, "Mc");
    type_aliases.put(Character.DECIMAL_DIGIT_NUMBER, "Nd");
    type_aliases.put(Character.LETTER_NUMBER, "Nl");
    type_aliases.put(Character.OTHER_NUMBER, "No");
    type_aliases.put(Character.SPACE_SEPARATOR, "Zs");
    type_aliases.put(Character.LINE_SEPARATOR, "Zl");
    type_aliases.put(Character.PARAGRAPH_SEPARATOR, "Zp");
    type_aliases.put(Character.CONTROL, "Cc");
    type_aliases.put(Character.FORMAT, "Cf");
    type_aliases.put(Character.PRIVATE_USE, "Co");
    type_aliases.put(Character.SURROGATE, "Cs");
    type_aliases.put(Character.DASH_PUNCTUATION, "Pd");
    type_aliases.put(Character.START_PUNCTUATION, "Ps");
    type_aliases.put(Character.END_PUNCTUATION, "Pe");
    type_aliases.put(Character.CONNECTOR_PUNCTUATION, "Pc");
    type_aliases.put(Character.OTHER_PUNCTUATION, "Po");
    type_aliases.put(Character.MATH_SYMBOL, "Sm");
    type_aliases.put(Character.CURRENCY_SYMBOL, "Sc");
    type_aliases.put(Character.MODIFIER_SYMBOL, "Sk");
    type_aliases.put(Character.OTHER_SYMBOL, "So");
    type_aliases.put(Character.INITIAL_QUOTE_PUNCTUATION, "Pi");
    type_aliases.put(Character.FINAL_QUOTE_PUNCTUATION, "Pf");
}

And calling the method:

    public static String getTypeStr(char ch)
    {
        return type_aliases.get((byte) Character.getType(ch));
    }

Then:

 String ch_str = getTypeStr(','); // Retorna "Po"