To format an individual character, use %c.
It matches the character argument.
import java.util.*; public class Main { public static void main(String args[]) { Formatter fmt = new Formatter(); fmt.format("Formatting %s is %S%c", "with Java", "easy", '!'); System.out.println(fmt); /* w w w .j av a2s.co m*/ fmt.close(); } }