public String createFileName(){
  String pref=getPrefix();
  String suff=getSuffix();
  String fileName=System.currentTimeMillis() + "";
  if (pref != null)   fileName=pref + PREFIX_DIVIDER + fileName;
  if (suff != null)   fileName=fileName + suff;
  return fileName;
}

public String createFileName ( ) { String pref = getPrefix ( ) ; String suff = getSuffix ( ) ; String fileName = System . currentTimeMillis ( ) + "" ; if ( pref != null ) fileName = pref + PREFIX_DIVIDER + fileName ; if ( suff != null ) fileName = fileName + suff ; return fileName ; }
creates an unique name for a new snapshot .
