Java/Regular Expressions/Match Address

Match Address: mixing numbers and characters

 
public class Main {
  public static void main(String args[]) {
    String addr = "street 124 a0a";
    String nameToken = "\\p{Upper}(\\p{Lower}+\\s?)";
    String namePattern = "(" + nameToken + "){2,3}";
    String zipCodePattern = "\\d{5}(-\\d{4})?";
    String addressPattern = "^" + namePattern + "\\w+ .*, \\w+ " + zipCodePattern + "$";
    System.out.println(addr.matches(addressPattern));
  }
}

Match address regular expressions

public class MatchAddress {
  public static void main(String args[]) {
    isAddressValid("John Smith 888 Luck Street,NY 64332");
    isAddressValid("John A. Smith 888 Luck Street, NY 64332-4453");
    isAddressValid("John Allen Smith 888 Luck Street, NY 64332-4453");
    isAddressValid("888 Luck Street, NY 64332");
    isAddressValid("P.O. BOX 888 Luck Street, NY 64332-4453");
    isAddressValid("John Allen Smith 888 Luck st., NY");
  }
  public static boolean isAddressValid(String addr) {
    boolean retval = false;
    String nameToken = "\\p{Upper}(\\p{Lower}+\\s?)";
    String namePattern = "(" + nameToken + "){2,3}";
    String zipCodePattern = "\\d{5}(-\\d{4})?";
    String addressPattern = "^" + namePattern + "\\w+ .*, \\w+ "
        + zipCodePattern + "$";
    retval = addr.matches(addressPattern);
    String msg = "NO MATCH\npattern:\n " + addr + "\nregexLength:\n "
        + addressPattern;
    if (retval) {
      msg = "MATCH\npattern:\n " + addr + "\nregexLength:\n "
          + addressPattern;
    }
    System.out.println(msg + "\r\n");
    return retval;
  }
}

Match Email address

  /**
   * SubStringDemo.java separates domain name like "@yahoo.ru"
   * from email id like "suraj.gupta@yahoo.ru"
   *
   */   
  public class SubStringDemo {
        /**
         * @author suraj.gupta
         */
     public static void main(String[] args) {
        String s = "suraj.gupta@yahoo.ru"; // email id in a String
        int IndexOf = s.indexOf("@"); // returns an integer which tells the position of this substring "@" in the parent String "suraj.gupta@yahoo.ru"
        String domainName = s.substring(IndexOf); //prints the String after that index
        System.out.println("Taking Domain name from an email id "+domainName);
     }
  }