Extract hash tag from String [closed]

Answer 1

try this -

String str="#important thing in #any programming #7 #& ";
Pattern MY_PATTERN = Pattern.compile("#(\\S+)");
Matcher mat = MY_PATTERN.matcher(str);
List<String> strs=new ArrayList<String>();
while (mat.find()) {
  //System.out.println(mat.group(1));
  strs.add(mat.group(1));
}

out put -

important
any
7
& 

Answer 2

String str = "Array is the most #important thing in any programming #language";
Pattern MY_PATTERN = Pattern.compile("#(\\w+)");
Matcher mat = MY_PATTERN.matcher(str);
while (mat.find()) {
        System.out.println(mat.group(1));
}

The regex used is:

#      - A literal #
(      - Start of capture group
  \\w+ - One or more word characters
)      - End of capture group

Answer 3

Try this regular expression

#\w+