What is the regex to extract all the emojis from a-第2页回答

I have a String encoded in UTF-8. For example:

Thats a nice joke


   
    



        
        
        
        
        14条回答

           
       
           
           
           
                                              
            
                                  
            
            
            
            
            
            一夜七次                          
            
             
             2楼-- · 2020-01-23 04:00
             
             
             
                          
             
                                                                          
        you can do it like this

    String s="Thats a nice joke                                                                     
                                                        
            

              
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            老娘就宠你                          
            
             
             3楼-- · 2020-01-23 04:02
             
             
             
                          
             
                                                                          
        This is what I use to remove emojis and so far it has shown to allow all other alphabets.

private static String remove_Emojis(String name)
{  

    //we will store all the letters in this array
    ArrayList<Character> nonEmoji = new ArrayList<>();

     // and when we rebuild the name we will put it in here
    String newName = "";


    // we are going to loop through checking each character to see if its an emoji or not
    for (int i = 0; i < name.length(); i++) 
     {

        if (Character.isLetterOrDigit(name.charAt(i)))
        {
            nonEmoji.add(name.charAt(i));
        } 

         else 
          {
             // this is just a 2nd check in case the other method didn't allow some letter
            if (Build.VERSION.SDK_INT > 18)
            {
                if (Character.isAlphabetic(name.charAt(i))) 
                {
                    nonEmoji.add(name.charAt(i));
                }
            }
        }


        if (name.charAt(i) == ' ')// may want to consider adding or '-' or '\''
        {
            nonEmoji.add(i);// just add it
        }

        if (name.charAt(i) == '@' && !name.contains(" "))// I put this in for email addresses
        {
            nonEmoji.add('@');
        }
    }

    // finally just loop through building it back out
    for (int i = 0; i < nonEmoji.size(); i++) {

        newName += nonEmoji.get(i);
    }

    return newName;
}

    
                                                                    
                                                        
            
              
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            趁早两清                          
            
             
             4楼-- · 2020-01-23 04:02
             
             
             
                          
             
                                                                          
        You can generate your own regex whenever the spec changes.

This tool (screenshot here).  

For utf-8/32 mode (stringed), expanded mode :  

"     # Use the 'Mega-Conversion' tool to change into other syntaxes"
"     # -------------------------------------------------------------"
"     "
"     [#*0-9] \\x{FE0F} \\x{20E3}"
"  |  [\\x{A9}\\x{AE}\\x{203C}\\x{2049}\\x{2122}\\x{2139}\\x{2194}-\\x{2199}\\x{21A9}\\x{21AA}\\x{231A}\\x{231B}\\x{2328}\\x{23CF}\\x{23E9}-\\x{23F3}\\x{23F8}-\\x{23FA}\\x{24C2}\\x{25AA}\\x{25AB}\\x{25B6}\\x{25C0}\\x{25FB}-\\x{25FE}\\x{2600}-\\x{2604}\\x{260E}\\x{2611}\\x{2614}\\x{2615}\\x{2618}]"
"  |  \\x{261D} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{2620}\\x{2622}\\x{2623}\\x{2626}\\x{262A}\\x{262E}\\x{262F}\\x{2638}-\\x{263A}\\x{2640}\\x{2642}\\x{2648}-\\x{2653}\\x{265F}\\x{2660}\\x{2663}\\x{2665}\\x{2666}\\x{2668}\\x{267B}\\x{267E}\\x{267F}\\x{2692}-\\x{2697}\\x{2699}\\x{269B}\\x{269C}\\x{26A0}\\x{26A1}\\x{26AA}\\x{26AB}\\x{26B0}\\x{26B1}\\x{26BD}\\x{26BE}\\x{26C4}\\x{26C5}\\x{26C8}\\x{26CE}\\x{26CF}\\x{26D1}\\x{26D3}\\x{26D4}\\x{26E9}\\x{26EA}\\x{26F0}-\\x{26F5}\\x{26F7}\\x{26F8}]"
"  |  \\x{26F9}"
"     (?:"
"          \\x{FE0F} \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{26FA}\\x{26FD}\\x{2702}\\x{2705}\\x{2708}\\x{2709}]"
"  |  [\\x{270A}-\\x{270D}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{270F}\\x{2712}\\x{2714}\\x{2716}\\x{271D}\\x{2721}\\x{2728}\\x{2733}\\x{2734}\\x{2744}\\x{2747}\\x{274C}\\x{274E}\\x{2753}-\\x{2755}\\x{2757}\\x{2763}\\x{2764}\\x{2795}-\\x{2797}\\x{27A1}\\x{27B0}\\x{27BF}\\x{2934}\\x{2935}\\x{2B05}-\\x{2B07}\\x{2B1B}\\x{2B1C}\\x{2B50}\\x{2B55}\\x{3030}\\x{303D}\\x{3297}\\x{3299}\\x{1F004}\\x{1F0CF}\\x{1F170}\\x{1F171}\\x{1F17E}\\x{1F17F}\\x{1F18E}\\x{1F191}-\\x{1F19A}]"
"  |  \\x{1F1E6} [\\x{1F1E8}-\\x{1F1EC}\\x{1F1EE}\\x{1F1F1}\\x{1F1F2}\\x{1F1F4}\\x{1F1F6}-\\x{1F1FA}\\x{1F1FC}\\x{1F1FD}\\x{1F1FF}]"
"  |  \\x{1F1E7} [\\x{1F1E6}\\x{1F1E7}\\x{1F1E9}-\\x{1F1EF}\\x{1F1F1}-\\x{1F1F4}\\x{1F1F6}-\\x{1F1F9}\\x{1F1FB}\\x{1F1FC}\\x{1F1FE}\\x{1F1FF}]"
"  |  \\x{1F1E8} [\\x{1F1E6}\\x{1F1E8}\\x{1F1E9}\\x{1F1EB}-\\x{1F1EE}\\x{1F1F0}-\\x{1F1F5}\\x{1F1F7}\\x{1F1FA}-\\x{1F1FF}]"
"  |  \\x{1F1E9} [\\x{1F1EA}\\x{1F1EC}\\x{1F1EF}\\x{1F1F0}\\x{1F1F2}\\x{1F1F4}\\x{1F1FF}]"
"  |  \\x{1F1EA} [\\x{1F1E6}\\x{1F1E8}\\x{1F1EA}\\x{1F1EC}\\x{1F1ED}\\x{1F1F7}-\\x{1F1FA}]"
"  |  \\x{1F1EB} [\\x{1F1EE}-\\x{1F1F0}\\x{1F1F2}\\x{1F1F4}\\x{1F1F7}]"
"  |  \\x{1F1EC} [\\x{1F1E6}\\x{1F1E7}\\x{1F1E9}-\\x{1F1EE}\\x{1F1F1}-\\x{1F1F3}\\x{1F1F5}-\\x{1F1FA}\\x{1F1FC}\\x{1F1FE}]"
"  |  \\x{1F1ED} [\\x{1F1F0}\\x{1F1F2}\\x{1F1F3}\\x{1F1F7}\\x{1F1F9}\\x{1F1FA}]"
"  |  \\x{1F1EE} [\\x{1F1E8}-\\x{1F1EA}\\x{1F1F1}-\\x{1F1F4}\\x{1F1F6}-\\x{1F1F9}]"
"  |  \\x{1F1EF} [\\x{1F1EA}\\x{1F1F2}\\x{1F1F4}\\x{1F1F5}]"
"  |  \\x{1F1F0} [\\x{1F1EA}\\x{1F1EC}-\\x{1F1EE}\\x{1F1F2}\\x{1F1F3}\\x{1F1F5}\\x{1F1F7}\\x{1F1FC}\\x{1F1FE}\\x{1F1FF}]"
"  |  \\x{1F1F1} [\\x{1F1E6}-\\x{1F1E8}\\x{1F1EE}\\x{1F1F0}\\x{1F1F7}-\\x{1F1FB}\\x{1F1FE}]"
"  |  \\x{1F1F2} [\\x{1F1E6}\\x{1F1E8}-\\x{1F1ED}\\x{1F1F0}-\\x{1F1FF}]"
"  |  \\x{1F1F3} [\\x{1F1E6}\\x{1F1E8}\\x{1F1EA}-\\x{1F1EC}\\x{1F1EE}\\x{1F1F1}\\x{1F1F4}\\x{1F1F5}\\x{1F1F7}\\x{1F1FA}\\x{1F1FF}]"
"  |  \\x{1F1F4} \\x{1F1F2}"
"  |  \\x{1F1F5} [\\x{1F1E6}\\x{1F1EA}-\\x{1F1ED}\\x{1F1F0}-\\x{1F1F3}\\x{1F1F7}-\\x{1F1F9}\\x{1F1FC}\\x{1F1FE}]"
"  |  \\x{1F1F6} \\x{1F1E6}"
"  |  \\x{1F1F7} [\\x{1F1EA}\\x{1F1F4}\\x{1F1F8}\\x{1F1FA}\\x{1F1FC}]"
"  |  \\x{1F1F8} [\\x{1F1E6}-\\x{1F1EA}\\x{1F1EC}-\\x{1F1F4}\\x{1F1F7}-\\x{1F1F9}\\x{1F1FB}\\x{1F1FD}-\\x{1F1FF}]"
"  |  \\x{1F1F9} [\\x{1F1E6}\\x{1F1E8}\\x{1F1E9}\\x{1F1EB}-\\x{1F1ED}\\x{1F1EF}-\\x{1F1F4}\\x{1F1F7}\\x{1F1F9}\\x{1F1FB}\\x{1F1FC}\\x{1F1FF}]"
"  |  \\x{1F1FA} [\\x{1F1E6}\\x{1F1EC}\\x{1F1F2}\\x{1F1F3}\\x{1F1F8}\\x{1F1FE}\\x{1F1FF}]"
"  |  \\x{1F1FB} [\\x{1F1E6}\\x{1F1E8}\\x{1F1EA}\\x{1F1EC}\\x{1F1EE}\\x{1F1F3}\\x{1F1FA}]"
"  |  \\x{1F1FC} [\\x{1F1EB}\\x{1F1F8}]"
"  |  \\x{1F1FD} \\x{1F1F0}"
"  |  \\x{1F1FE} [\\x{1F1EA}\\x{1F1F9}]"
"  |  \\x{1F1FF} [\\x{1F1E6}\\x{1F1F2}\\x{1F1FC}]"
"  |  [\\x{1F201}\\x{1F202}\\x{1F21A}\\x{1F22F}\\x{1F232}-\\x{1F23A}\\x{1F250}\\x{1F251}\\x{1F300}-\\x{1F321}\\x{1F324}-\\x{1F384}]"
"  |  \\x{1F385} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F386}-\\x{1F393}\\x{1F396}\\x{1F397}\\x{1F399}-\\x{1F39B}\\x{1F39E}-\\x{1F3C1}]"
"  |  \\x{1F3C2} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F3C3}\\x{1F3C4}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F3C5}\\x{1F3C6}]"
"  |  \\x{1F3C7} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F3C8}\\x{1F3C9}]"
"  |  \\x{1F3CA}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F3CB}\\x{1F3CC}]"
"     (?:"
"          \\x{FE0F} \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F3CD}-\\x{1F3F0}]"
"  |  \\x{1F3F3}"
"     (?: \\x{FE0F} \\x{200D} \\x{1F308} )?"
"  |  \\x{1F3F4}"
"     (?:"
"          \\x{200D} \\x{2620} \\x{FE0F}"
"       |  \\x{E0067} \\x{E0062}"
"          (?:"
"               \\x{E0065} \\x{E006E} \\x{E0067}"
"            |  \\x{E0073} \\x{E0063} \\x{E0074}"
"            |  \\x{E0077} \\x{E006C} \\x{E0073}"
"          )"
"          \\x{E007F}"
"     )?"
"  |  [\\x{1F3F5}\\x{1F3F7}-\\x{1F440}]"
"  |  \\x{1F441}"
"     (?: \\x{FE0F} \\x{200D} \\x{1F5E8} \\x{FE0F} )?"
"  |  [\\x{1F442}\\x{1F443}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F444}\\x{1F445}]"
"  |  [\\x{1F446}-\\x{1F450}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F451}-\\x{1F465}]"
"  |  [\\x{1F466}\\x{1F467}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F468}"
"     (?:"
"          \\x{200D}"
"          (?:"
"               [\\x{2695}\\x{2696}\\x{2708}] \\x{FE0F}"
"            |  \\x{2764} \\x{FE0F} \\x{200D}"
"               (?: \\x{1F48B} \\x{200D} )?"
"               \\x{1F468}"
"            |  [\\x{1F33E}\\x{1F373}\\x{1F393}\\x{1F3A4}\\x{1F3A8}\\x{1F3EB}\\x{1F3ED}]"
"            |  \\x{1F466}"
"               (?: \\x{200D} \\x{1F466} )?"
"            |  \\x{1F467}"
"               (?: \\x{200D} [\\x{1F466}\\x{1F467}] )?"
"            |  [\\x{1F468}\\x{1F469}] \\x{200D}"
"               (?:"
"                    \\x{1F466}"
"                    (?: \\x{200D} \\x{1F466} )?"
"                 |  \\x{1F467}"
"                    (?: \\x{200D} [\\x{1F466}\\x{1F467}] )?"
"               )"
"            |  [\\x{1F4BB}\\x{1F4BC}\\x{1F527}\\x{1F52C}\\x{1F680}\\x{1F692}\\x{1F9B0}-\\x{1F9B3}]"
"          )"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?:"
"               \\x{200D}"
"               (?:"
"                    [\\x{2695}\\x{2696}\\x{2708}] \\x{FE0F}"
"                 |  [\\x{1F33E}\\x{1F373}\\x{1F393}\\x{1F3A4}\\x{1F3A8}\\x{1F3EB}\\x{1F3ED}\\x{1F4BB}\\x{1F4BC}\\x{1F527}\\x{1F52C}\\x{1F680}\\x{1F692}\\x{1F9B0}-\\x{1F9B3}]"
"               )"
"          )?"
"     )?"
"  |  \\x{1F469}"
"     (?:"
"          \\x{200D}"
"          (?:"
"               [\\x{2695}\\x{2696}\\x{2708}] \\x{FE0F}"
"            |  \\x{2764} \\x{FE0F} \\x{200D}"
"               (?: \\x{1F48B} \\x{200D} )?"
"               [\\x{1F468}\\x{1F469}]"
"            |  [\\x{1F33E}\\x{1F373}\\x{1F393}\\x{1F3A4}\\x{1F3A8}\\x{1F3EB}\\x{1F3ED}]"
"            |  \\x{1F466}"
"               (?: \\x{200D} \\x{1F466} )?"
"            |  \\x{1F467}"
"               (?: \\x{200D} [\\x{1F466}\\x{1F467}] )?"
"            |  \\x{1F469} \\x{200D}"
"               (?:"
"                    \\x{1F466}"
"                    (?: \\x{200D} \\x{1F466} )?"
"                 |  \\x{1F467}"
"                    (?: \\x{200D} [\\x{1F466}\\x{1F467}] )?"
"               )"
"            |  [\\x{1F4BB}\\x{1F4BC}\\x{1F527}\\x{1F52C}\\x{1F680}\\x{1F692}\\x{1F9B0}-\\x{1F9B3}]"
"          )"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?:"
"               \\x{200D}"
"               (?:"
"                    [\\x{2695}\\x{2696}\\x{2708}] \\x{FE0F}"
"                 |  [\\x{1F33E}\\x{1F373}\\x{1F393}\\x{1F3A4}\\x{1F3A8}\\x{1F3EB}\\x{1F3ED}\\x{1F4BB}\\x{1F4BC}\\x{1F527}\\x{1F52C}\\x{1F680}\\x{1F692}\\x{1F9B0}-\\x{1F9B3}]"
"               )"
"          )?"
"     )?"
"  |  [\\x{1F46A}-\\x{1F46D}]"
"  |  \\x{1F46E}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F46F}"
"     (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"  |  \\x{1F470} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F471}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F472} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F473}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F474}-\\x{1F476}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F477}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F478} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F479}-\\x{1F47B}]"
"  |  \\x{1F47C} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F47D}-\\x{1F480}]"
"  |  [\\x{1F481}\\x{1F482}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F483} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F484}"
"  |  \\x{1F485} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F486}\\x{1F487}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F488}-\\x{1F4A9}]"
"  |  \\x{1F4AA} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F4AB}-\\x{1F4FD}\\x{1F4FF}-\\x{1F53D}\\x{1F549}-\\x{1F54E}\\x{1F550}-\\x{1F567}\\x{1F56F}\\x{1F570}\\x{1F573}]"
"  |  \\x{1F574} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F575}"
"     (?:"
"          \\x{FE0F} \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F576}-\\x{1F579}]"
"  |  \\x{1F57A} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F587}\\x{1F58A}-\\x{1F58D}]"
"  |  [\\x{1F590}\\x{1F595}\\x{1F596}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F5A4}\\x{1F5A5}\\x{1F5A8}\\x{1F5B1}\\x{1F5B2}\\x{1F5BC}\\x{1F5C2}-\\x{1F5C4}\\x{1F5D1}-\\x{1F5D3}\\x{1F5DC}-\\x{1F5DE}\\x{1F5E1}\\x{1F5E3}\\x{1F5E8}\\x{1F5EF}\\x{1F5F3}\\x{1F5FA}-\\x{1F644}]"
"  |  [\\x{1F645}-\\x{1F647}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F648}-\\x{1F64A}]"
"  |  \\x{1F64B}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F64C} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F64D}\\x{1F64E}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F64F} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F680}-\\x{1F6A2}]"
"  |  \\x{1F6A3}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F6A4}-\\x{1F6B3}]"
"  |  [\\x{1F6B4}-\\x{1F6B6}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F6B7}-\\x{1F6BF}]"
"  |  \\x{1F6C0} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F6C1}-\\x{1F6C5}\\x{1F6CB}]"
"  |  \\x{1F6CC} [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F6CD}-\\x{1F6D2}\\x{1F6E0}-\\x{1F6E5}\\x{1F6E9}\\x{1F6EB}\\x{1F6EC}\\x{1F6F0}\\x{1F6F3}-\\x{1F6F9}\\x{1F910}-\\x{1F917}]"
"  |  [\\x{1F918}-\\x{1F91C}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F91D}"
"  |  [\\x{1F91E}\\x{1F91F}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  [\\x{1F920}-\\x{1F925}]"
"  |  \\x{1F926}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F927}-\\x{1F92F}]"
"  |  [\\x{1F930}-\\x{1F936}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F937}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F938}\\x{1F939}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  \\x{1F93A}"
"  |  \\x{1F93C}"
"     (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"  |  [\\x{1F93D}\\x{1F93E}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F940}-\\x{1F945}\\x{1F947}-\\x{1F970}\\x{1F973}-\\x{1F976}\\x{1F97A}\\x{1F97C}-\\x{1F9A2}\\x{1F9B0}-\\x{1F9B4}]"
"  |  [\\x{1F9B5}\\x{1F9B6}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F9B7}"
"  |  [\\x{1F9B8}\\x{1F9B9}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F9C0}-\\x{1F9C2}\\x{1F9D0}]"
"  |  [\\x{1F9D1}-\\x{1F9D5}] [\\x{1F3FB}-\\x{1F3FF}]?"
"  |  \\x{1F9D6}"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F9D7}-\\x{1F9DD}]"
"     (?:"
"          \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F}"
"       |  [\\x{1F3FB}-\\x{1F3FF}]"
"          (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"     )?"
"  |  [\\x{1F9DE}\\x{1F9DF}]"
"     (?: \\x{200D} [\\x{2640}\\x{2642}] \\x{FE0F} )?"
"  |  [\\x{1F9E0}-\\x{1F9FF}]"


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"0]|[\\uDDD1-\\uDDD5](?:\\uD83C[\\uDFFB-\\uDFFF])?|\\uDDD6(?:\\u200D"
"[\\u2640\\u2642]\\uFE0F|\\uD83C[\\uDFFB-\\uDFFF](?:\\u200D[\\u2640\\u"
"2642]\\uFE0F)?)?|[\\uDDD7-\\uDDDD](?:\\u200D[\\u2640\\u2642]\\uFE0F"
"|\\uD83C[\\uDFFB-\\uDFFF](?:\\u200D[\\u2640\\u2642]\\uFE0F)?)?|[\\uD"
"DDE\\uDDDF](?:\\u200D[\\u2640\\u2642]\\uFE0F)?|[\\uDDE0-\\uDDFF])"

    
                                                                    
                                                        
            
              
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            别忘想泡老子                          
            
             
             5楼-- · 2020-01-23 04:05
             
             
             
                          
             
                                                                          
        Just to use regex to solve it:

s = s.replaceAll("\\p{So}+", "");


You can find it in 

http://www.regular-expressions.info/unicode.html

https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#OTHER_SYMBOL




    
                                                                    
                                                        
            
              
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            戒情不戒烟                          
            
             
             6楼-- · 2020-01-23 04:09
             
             
             
                          
             
                                                                          
        Using emoji-java i've wrote a simple method that removes all emojis including fitzpatrick modifiers. Requires an external library but easier to maintain than those monster regexes. 

Use:

String input = "A string                                                                     
                                                        
            

              
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            地球回转人心会变                          
            
             
             7楼-- · 2020-01-23 04:09
             
             
             
                          
             
                                                                          
        The best regex for extracting ALL emoji is this:

(?:[\u2700-\u27bf]|(?:\ud83c[\udde6-\uddff]){2}|[\ud800-\udbff][\udc00-\udfff]|[\u0023-\u0039]\ufe0f?\u20e3|\u3299|\u3297|\u303d|\u3030|\u24c2|\ud83c[\udd70-\udd71]|\ud83c[\udd7e-\udd7f]|\ud83c\udd8e|\ud83c[\udd91-\udd9a]|\ud83c[\udde6-\uddff]|[\ud83c[\ude01-\ude02]|\ud83c\ude1a|\ud83c\ude2f|[\ud83c[\ude32-\ude3a]|[\ud83c[\ude50-\ude51]|\u203c|\u2049|[\u25aa-\u25ab]|\u25b6|\u25c0|[\u25fb-\u25fe]|\u00a9|\u00ae|\u2122|\u2139|\ud83c\udc04|[\u2600-\u26FF]|\u2b05|\u2b06|\u2b07|\u2b1b|\u2b1c|\u2b50|\u2b55|\u231a|\u231b|\u2328|\u23cf|[\u23e9-\u23f3]|[\u23f8-\u23fa]|\ud83c\udccf|\u2934|\u2935|[\u2190-\u21ff])


It identifies many single-char emoji that the other answers do not account for. For more information about how this regex works, take a look at this post. https://medium.com/@thekevinscott/emojis-in-javascript-f693d0eb79fb#.enomgcu63
    
                                                                    
                                                        
            
              
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What is the regex to extract all the emojis from a

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