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Java Regular Expressions in Java

davron imamov
davron imamov
9,373 Points
Posted by davron imamov
davron imamov
9,373 Points

While loop

hello i am on Craig Davids Java Regular expressions tutorial and i was wondering how to loop the zipCode part of the code so that if the zipCode is not valid it has to input the zipCode again and if the zipCode is valid it outputs the zipCode is valid can someone please show a valid code for this

1 Answer

Yanuar Prakoso
Yanuar Prakoso
15,196 Points
Yanuar Prakoso
Yanuar Prakoso
15,196 Points

Hi Davron

Here is my while loop code:

import java.io.Console;
import java.util.regex.Pattern;
import java.util.regex.Matcher;

class Reggie {
  public static void main(String[] args) {
    Console console = System.console();
    // Your amazing code below
    String zipCode;
    zipCode = console.readLine("Enter your zipcode: ");
    while (!zipCode.matches("^\\d{5}(-\\d{4})?$")){

    //Wrong String zipCode example = "90210-000";
      System.out.printf("%s is NOT  a valid zip code%n", zipCode);
      zipCode = console.readLine("Re-Enter your zipcode: ");

    } 

      System.out.printf("%s is a valid zip code%n", zipCode);

  }
}

I hope this can help a little

davron imamov
davron imamov
9,373 Points
davron imamov
davron imamov
9,373 Points

oh great it was easier than i was expecting thank you very much for your support