import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^\\s*($|#|\\w+\\s*=|(?<SECOND>(?:\\?|\\*|(?:(?<START_SEC>[0-5]?\\d)(?:(?<DELIMITER_SEC>\\-|\\/|\\,)(?<END_SEC>[0-6]?\\d))*)))\\s+(?<MINUTE>(?:\\?|\\*|(?:(?<START_MIN>[0-5]?\\d)(?:(?<DELIMITER_MIN>\\-|\\/|\\,)(?<END_MIN>[0-6]?\\d))*)))\\s+(?<HOUR>(?:\\?|\\*|(?:(?<START_HR>[0-2]?\\d)(?:(?<DELIMITER_HR>\\-|\\/|\\,)(?<END_HR>[0-2]?\\d))*)))\\s+(?<DAYOFMONTH>\\?|\\*|(?:(?<START_DOM>L|W|LW|[1-3]?\\dW?)(?:(?<DELIMITER_DOM>\\-|\\/|\\,)(?<END_DOM>[1-3]?\\d?W?))*))\\s+(?<MONTH>\\*|(?:(?<START_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)(?:(?<DELIMITER_MON>\\-|\\/|\\,)(?<END_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))*))\\s+(?<DAYOFWEEK>\\?|\\*|(?:(?<START_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT)(?:(?:(?:(?<DELIMITER_DOW>\\/|\\,|\\#)(?<END_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT))*)L?)*))(?:|\\s)+(?<YEAR>(?:\\*|(?:(?<START_YR>\\b(?:[1-2](?:9|0)\\d\\d)\\b)(?:(?<DELIMITER_YR>\\-|\\/|\\,)(?<END_YR>\\b(?:[1-9]|[1-9][0-9]|1[0-8][0-9]|19[0-2])\\b|\\b(?:[1-2](?:9|0)\\d\\d)\\b))*))))$";
final String string = "* 37 11 1/32 * ? 2023/1\n"
+ "0 0 0 1/14 3/2 ? 2020,2045,2055,2060\n"
+ "0 0 0 1,6,11,13,16,21,22 3/2 ? 2020,2045,2055,2060\n"
+ "46 10 10 2/7 2/2 MON,FRI,SUN 2024/1";
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