Java/Regular Expressions/ZIP Code

Match Zip

 
/*
#Japanese postal codes
zipJP=^\d{3}-\d{4}$
#US postal codes
zipUS=^\d{5}\p{Punct}?\s?(?:\d{4})?$
#Dutch postal code
zipNL=^[0-9]{4}\s*[a-zA-Z]{2}$
#Argentinean postal code
zipAR=^\d{3}-\d{4}$
#Swedish postal code
zipSE=^(s-|S-){0,1}[0-9]{3}\s?[0-9]{2}$
#Canadian postal code
zipCA=^([A-Z]\d[A-Z]\s\d[A-Z]\d)$
#UK postal code
zipUK=^[a-zA-Z]{1,2}[0-9][0-9A-Za-z]{0,1} {0,1}[0-9][A-Za-z]{2}$

*/
public class MatchZipCodes {
  public static void main(String args[]) {
    isZipValid("45643-4443");
    isZipValid("45643");
    isZipValid("443");
    isZipValid("45643-44435");
    isZipValid("45643 44435");
  }
  public static boolean isZipValid(String zip) {
    boolean retval = false;
    String zipCodePattern = "\\d{5}(-\\d{4})?";
    retval = zip.matches(zipCodePattern);
    String msg = "NO MATCH: pattern:" + zip + "\r\n             regex: "
        + zipCodePattern;
    if (retval) {
      msg = "MATCH   : pattern:" + zip + "\r\n             regex: "
          + zipCodePattern;
    }
    System.out.println(msg + "\r\n");
    return retval;
  }
}

Match Zip Codes

 
public class Main {
  public static void main(String[] a) {
    String zip = "1234-123";
    String zipCodePattern = "\\d{5}(-\\d{4})?";
    boolean retval = zip.matches(zipCodePattern);
  }
}