NewFormat.java

		System.out.println(format(11929) + " <--- 11,929");
		System.out.println(format(158390) + " <--- 158,390");
		System.out.println(format(999999) + " <--- 999,999");
		System.out.println(format(1000) + " <--- 1000");
		System.out.println(format(1000001) + " <--- 1,000,001");
		System.out.println(format(12345678912l) + " <--- 12,345,678,912");
		
		public static String format(long i) {
			String formatted = "";
			String end = "";
			NumberFormat format = NumberFormat.getInstance();
			formatted = format.format(i).toString();
			if (i >= 1000) {
				end = "k";
				if (i >= 1000000) {
					end = "M";
					if (i >= 1000000000) {
						end = "B";
					}
				}
				formatted = formatted.split("\\.")[0] + "." + formatted.split("\\.")[1].substring(0, 2) + end;
			}
			return formatted;
		}