秒转换成分钟和小时主要通过取余和取商实现,然后通过StringBuffer拼接显示;代码简单直接上代码

    public static String formatTimeS(long seconds) {
        int temp = 0;
        StringBuffer sb = new StringBuffer();
        if (seconds > 3600) {
            temp = (int) (seconds / 3600);
            sb.append((seconds / 3600) < 10 ? "0" + temp + ":" : temp + ":");
            temp = (int) (seconds % 3600 / 60);
            changeSeconds(seconds, temp, sb);
        } else {
            temp = (int) (seconds % 3600 / 60);
            changeSeconds(seconds, temp, sb);
        }
        return sb.toString();
    }

    private static void changeSeconds(long seconds, int temp, StringBuffer sb) {
        sb.append((temp < 10) ? "0" + temp + ":" : "" + temp + ":");
        temp = (int) (seconds % 3600 % 60);
        sb.append((temp < 10) ? "0" + temp : "" + temp);
    }