hh:mm aa (12 hour format ) convert in HH:mm (24 hour format)

问题

I have String time="02:30 PM" means 12 hour format and i want to convert this time in 24 hour format .

I want this o/p: 14:30. so how can i convert this ?

回答1:

I don't know anything about berries, but in case the API is missing a proper formatting function, you can always get your hands dirty with the string itself:

static String convert(String time){

    boolean pm = "PM".equals(time.substring(6).toUpperCase());
    int h = Integer.valueOf(time.substring(0,2));

    if (h!=12)
        h+=pm?12:0;
    else
        h=pm?h:0;
    return ((h<10)?"0":"")+h + ":" + time.substring(3,5);
}

回答2:

Try this code.

This will give the current time in 24 Hours format.

    SimpleDateFormat formate = new SimpleDateFormat("HH:mm");
    String newTime = formate.formatLocal(System.currentTimeMillis());

来源：https://stackoverflow.com/questions/8091235/hhmm-aa-12-hour-format-convert-in-hhmm-24-hour-format