Convert integer minutes into String "hh:mm"

Question

I need to convert minutes (defined as Integer) into the following String format "hh:mm" assuming that the startTime is "00:00". The below-given code is what I have so far, but it does not work properly. Also it does not take into account that the newTime should be shifted in accordance to startTime. Is there any other solution?

String startTime = "00:00";
int minutes = 120;
double time = minutes/60;
String timeS = Double.toString(time);
String[] hourMin = timeS.split(".");
String h = hourMin[0];
String m = hourMin[1];
String newTime = "";    
newTime.concat(h+":"+m);

Answer 1

int minutes = 120;

int h = minutes / 60;
int m = minutes % 60;

String.format("%02d:%02d",h,m); // output : "02:00"
String.format("%d:%d",h,m); // output : "2:0"