if (this.help == null) { this.help = new CommonHelpDialog(this.frame, new File(helpFileName));
if (help == null) { help = new CommonHelpDialog(frame, new File(helpFileName));
    public void showHelp() {        // Do we need to create the "help" dialog?        if (this.help == null) {            this.help = new CommonHelpDialog(this.frame, new File(helpFileName));        }        // Show the help dialog.        this.help.setVisible(true);    }