import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^((gir *0aa)|((((?![qvx])[a-z][a-hk-y]?[0-9][0-9]?)|(((?![qvx])[a-z][0-9][a-hjkstuw])|((?![qvx])[a-z][a-hk-y][0-9][abehmnprvwxy]))) *([0-9](?![cikmov])[a-z]{2}))|(((?![qvx])[a-z][a-hk-y]?[0-9][0-9]?)|((?![qvx])[a-z][0-9][a-hjkstuw])|((?![qvx])[a-z][a-hk-y][0-9][abehmnprvwxy])))$";
final String string = "GIR 0AA\n\n"
+ "W1 6LS\n"
+ "N1C 4UQ\n"
+ "N17 6LA\n"
+ "SW8 1UQ\n"
+ "CW3 9SS\n"
+ "SE5 0EG\n"
+ "WC2H 7LT\n"
+ "WC1N 2PL\n"
+ "HU12 0AR\n\n"
+ "N1C4UQ\n"
+ "N176LA\n"
+ "SW81UQ\n"
+ "CW39SS\n"
+ "SE50EG\n"
+ "WC2H7LT\n"
+ "WC1N2PL\n"
+ "HU120AR\n\n"
+ "W1\n"
+ "N1C\n"
+ "N17\n"
+ "SW8\n"
+ "CW3\n"
+ "SE5\n"
+ "WC2H\n"
+ "WC1N\n"
+ "HU12\n\n"
+ "QA12\n"
+ "AJ12\n"
+ "Q1A\n"
+ "A1V\n"
+ "QA1N\n"
+ "AZ1N\n"
+ "AB1Z";
final Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | 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