Suppose I have a string
String s = The | community | office | system | is here to help you with specific coding, algorithm, or language problems.
How can I extract all the words from string s into a list which is between the pipe delimiter?
So the list should save community, office, system.
I thought of using the following pattern. Will it work?
Matcher matcher = Pattern.compile("(\\|\\w+)").matcher(s);
You can use
\|\s*(\w+)(?=\s*\|)
\|\s*(.*?)(?=\s*\|)
See the regex demo and regex #2 demo. Details:
\| - a | char\s* - zero or more whitespaces(\w+) - Group 1: one or more word chars(.*?) - any zero or more chars other than line break chars, as few as possible(?=\s*\|) - a positive lookahead that matches a location that is immediately followed with zero or more whitespaces and a | char.See a Java demo and a Java #2 demo:
String s = "The | community | office | system | is here to help you with specific coding, algorithm, or language problems.";
Pattern pattern = Pattern.compile("\\|\\s*(\\w+)(?=\\s*\\|)");
Matcher matcher = pattern.matcher(s);
while (matcher.find()){
System.out.println(matcher.group(1));
}
// => community
// office
// system
// The second pattern demo:
String s = "The | community section | office section | system section | is here to help you with specific coding, algorithm, or language problems.";
Pattern pattern = Pattern.compile("\\|\\s*(.*?)(?=\\s*\\|)");
Matcher matcher = pattern.matcher(s);
while (matcher.find()){
System.out.println(matcher.group(1));
}
// => community section
// office section
// system section
The | community section | office section | system section | is here to help you with specific coding, algorithm, or language problems.
.*?Pattern.DOTALL when compiling the pattern, i.e. Pattern pattern = Pattern.compile("\\|\\s*(.*?)(?=\\s*\\|)", Pattern.DOTALL);.