time.java

public class Time {

  public static String formatTime(long t) {
		StringBuffer o = new StringBuffer();
		long dsecs = (t/10)%100;
		long secs  = (t/1000)%60;
		long mins = t/(60*1000);
		
		if(mins < 10) {
			o.append('0');
		}
		o.append(mins);
		o.append(':');
		
		
		if(secs < 10) {
			o.append('0');
		}
		o.append(secs);
		o.append(':');
		if(dsecs < 10) {
			o.append('0');
		}
		o.append(dsecs);
		return o.toString();
		//return String.format("%02d:%02d.%02d", mins, secs, dsecs );
	}
	
	public static String formaDelta(long dt) {
		StringBuffer o = new StringBuffer();
		
		long t = Math.abs(dt);
		long dsecs = (t/10)%100;
		long secs  = t/1000;
		
		o.append(dt>=0?"+":"-");
		if(secs < 10) {
			o.append('0');
		}
		o.append(secs);
		o.append(':');
		if(dsecs < 10) {
			o.append('0');
		}
		o.append(dsecs);
		return o.toString();
		//return String.format("%s%02d.%02d", dt>=0?"+":"-", secs, dsecs );
	}
}