public byte[] digest(){
  if (this.digest == null) {
    return null;
  }
  return Arrays.copyOf(this.digest,this.digest.length);
}

public byte [ ] digest ( ) { if ( this . digest == null ) { return null ; } return Arrays . copyOf ( this . digest , this . digest . length ) ; }
gets a copy of the fonts digest that was created when the font was read . if no digest was set at creation time then the return result will be null .
