Gracefully remove "\n" delimiter after last String within StringBuilder

Have following Java code,that creates StringBuilder with "\n",i.e. carriage return delimiters:

while (scanner.hasNextLine()){
    sb.append(scanner.nextLine()).append("\n");
}

It's occurred,that after last String(line) had "\n" symbol.

How to gracefully remove last "\n" from resulting StringBuilder object?

thanks.