import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?x) \n"
+ "\\d+ # at least one digit\n"
+ "\\. # a period\n"
+ "\\s # a space\n"
+ "[^\\d]++ # not a digit, 1 or more of them\n"
+ "(?=\\d) # until we see a digit ahead\n";
final String string = " 1. Which is your primary browser for development 2. Which of the following technologies have you made use of? 2. Which of the following technologies have you made use of? 3. How old ";
final Pattern pattern = Pattern.compile(regex);
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