public Utf8Constant addUTF8(String value){
  Utf8Constant entry=getUTF8(value);
  if (entry != null)   return entry;
  entry=new Utf8Constant(this,_entries.size(),value);
  addConstant(entry);
  return entry;
}

public Utf8Constant addUTF8 ( String value ) { Utf8Constant entry = getUTF8 ( value ) ; if ( entry != null ) return entry ; entry = new Utf8Constant ( this , _entries . size ( ) , value ) ; addConstant ( entry ) ; return entry ; }
adds a utf - 8 constant .
