import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?:For:\\s)?(?:For:.+)?((?<first_ip>\\b\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}))\\,";
final String string = "For: ${jnd:ldap://${namingDetails}.for.net.sh}, 4.5.3.2, 23.200.06.110 V-\n"
+ "For: 10.10.21.17, 5.18.11.74, 23.36.3.22 V-\n"
+ "For: 23.3.39.1, 21.61.39.21 V-\n"
+ "For: 3.3.39.1 V-";
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