Java 格式小时和分钟

I need to format my time string such as this:

int time = 160;

这是我的示例代码:

public static String formatDuration(String minute) {
    String formattedMinute = null;
    SimpleDateFormat sdf = new SimpleDateFormat("mm");
    try {
        Date dt = sdf.parse(minute);
        sdf = new SimpleDateFormat("HH mm");
        formattedMinute = sdf.format(dt);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return formattedMinute;
//        int minutes = 120;
//        int h = minutes / 60 + Integer.parseInt(minute);
//        int m = minutes % 60 + Integer.parseInt(minute);
//        return h + "hr " + m + "mins";
}

我需要将其显示为 2 小时 40 分钟.但我不知道如何附加小时"和分钟".要求是不要使用任何库.

String minutes = "160";
Duration duration = Duration.ofMinutes(Long.parseLong(minutes));

long hours = duration.toHours();
long mins = duration.minusHours(hours).toMinutes();

// Or if you're lucky enough to be using Java 9+
//String formatted = String.format("%dhrs %02dmins", duration.toHours(), duration.toMinutesPart());
String formatted = String.format("%dhrs %02dmins", hours, mins);
System.out.println(formatted);

2hrs 40mins