java Currency Formatter

/**
 * @author lautturi.com
 * Java example: java format money currency 
 */

import java.util.*;
import java.text.NumberFormat;

public class Lautturi {
	public static void main(String[] args) {

		double amount= 100.1;
		//NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
		NumberFormat numberFormat = NumberFormat.getCurrencyInstance();
		
		Currency currency = Currency.getInstance("GBP");
		numberFormat.setCurrency(currency);
		
		String amountString = numberFormat.format(amount);
		System.out.println(amountString );
	    
	}
}