import java.util.regex.Matcher;
import java.util.regex.Pattern;
//\d\d(0[1-9]|1[0-2])([0-2][1-9]|3[0-1])[1-4]\d{6}
//Regular Expression
class RRN {
String rrn;
String PatternStr = "\\d\\d(0[1-9]|1[0-2])([0-2][1-9]|3[0-1])[1-4]\\d{6}";
Pattern pat = Pattern.compile(PatternStr);
Matcher mat;
boolean found;
boolean more = true;
public String FindRRN(String str) {
mat = pat.matcher(str);
found = mat.find();
if (found)
{
rrn = mat.group();
more = true;
//end()는 mat.group() 후에 사용 가능
str = str.substring(mat.end());
}
else
{
rrn = "Not found";
more = false;
}
return str;
}
}
public class RRNTest {
public static void main(String[] args) {
String str = "8204254093614abc128714cd7903241081511AE@5605047145666#";
boolean more = true;
RRN r = new RRN();
while (r.more) {
str = r.FindRRN(str);
if (r.rrn != "Not found") System.out.println(r.rrn);
}
}
}
