import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^(?:(?:(?:(?:(?:[13579][26]|[2468][048])00)|(?:[0-9]{2}(?:(?:[13579][26])|(?:[2468][048]|0[48]))))(?:(?:(?:09|04|06|11)(?:0[1-9]|1[0-9]|2[0-9]|30))|(?:(?:01|03|05|07|08|10|12)(?:0[1-9]|1[0-9]|2[0-9]|3[01]))|(?:02(?:0[1-9]|1[0-9]|2[0-9]))))|(?:[0-9]{4}(?:(?:(?:09|04|06|11)(?:0[1-9]|1[0-9]|2[0-9]|30))|(?:(?:01|03|05|07|08|10|12)(?:0[1-9]|1[0-9]|2[0-9]|3[01]))|(?:02(?:[01][0-9]|2[0-8])))))(([_]{1})[a-zA-Z-zÀ-ÿ-0-9\\s]+?(?=_)([_]{1})(([0-9]+?(?=[.]))|([0-9]+?(?=[_])([_]{1})[a-zA-Z-zÀ-ÿ-0-9\\s]+?(?=[.]))|([a-zA-Z-zÀ-ÿ-0-9\\s]+?(?=_)([_]{1})(([0-9]+?(?=[.]))|([0-9]+?(?=_)([_]{1})[a-zA-Z-zÀ-ÿ-0-9\\s]+?(?=[.]))))))";
final String string = "\n"
+ "20220103\n"
+ "20220103_type_67676.txt\n"
+ "20220103_ty ççpe_67676.txt\n"
+ "20220103_typ çw3434ç sdf ççe_67676.txt\n"
+ "20220103_type_sousType_67676.txt\n"
+ "20220103_type_sousType_67676_test.txt\n"
+ "20220103_tyéàààçççççééééêê432èèèè èïÜüïîÛÜÄçpe_67676.txt\n"
+ "20220103_tééééêê432èèype_sééééêê432èèsousType_67676.txt\n"
+ "20220103_tééééêê432èèype_sééééêê432èèsousType_67676_libre.txt\n"
+ "20211231_CA_80001_champ libre.txt\n"
+ "20220103_";
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