Java tutorial
//package com.java2s; public class Main { public static String timeFormat(int ms) { StringBuilder time = new StringBuilder(); time.delete(0, time.length()); ms /= 1000; int s = ms % 60; int min = ms / 60; if (min < 10) { time.append(0); } time.append(min).append(":"); if (s < 10) { time.append(0); } time.append(s); return time.toString(); } }