java regex matches get index
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String[] argv) throws Exception {
CharSequence inputStr = "abbabcd";
String patternStr = "(a(b*))+(c*)";
Pattern pattern = Pattern.compile(patternStr);
Matcher matcher = pattern.matcher(inputStr);
boolean matchFound = matcher.find();
if (matchFound) {
// Get all groups for this match
for (int i = 0; i <= matcher.groupCount(); i++) {
// Get the group's captured text
String groupStr = matcher.group(i);
// Get the group's indices
int groupStart = matcher.start(i);
int groupEnd = matcher.end(i);
// groupStr is equivalent to
inputStr.subSequence(groupStart, groupEnd);
}
}
}
}