Java

Validate a ULID

See more ULID/UUID Examples

Checks to see if a ULID is valid.

Important: Chilkat's ULID functionality was introduced in v9.5.0.94.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkDateTime dt = new CkDateTime();

    // A ULID must be exactly 26 chars in length,
    // and is composed of the following chars: 0123456789ABCDEFGHJKMNPQRSTVWXYZ
    // Note: The ULID alphabet excludes the letters I, L, O, and U

    // Here's a valid ULID
    String ulid = "01GRGCH4J88RECEN4D4VK4F629";
    boolean valid = dt.UlidValidate(ulid);
    System.out.println("valid: " + valid);

    // Here's an invalid ULID
    ulid = "71GRGxx4Jr8RECEN4D4VK4F62!";
    valid = dt.UlidValidate(ulid);
    System.out.println("valid: " + valid);
  }
}