import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?<!\\S)#<[a-zA-Z0-9]+(?: [a-zA-Z0-9]+)*>(?!\\S)";
final String string = "abol#<xxx%$3yyytabol>\n"
+ "#<example>\n"
+ "#<example string>\n"
+ "#<example string string string string>\n"
+ "#<specific format>\n"
+ "abol#<xxx%$3yyytabol>abol";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html