SimpleDateFormat 上午/下午 变 AM/PM

1.

import ;
import ;
import ;

public class T {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int hour = 12;
        try{
            SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy");
            SimpleDateFormat formatTime = new SimpleDateFormat("MM/dd/yyyy hh:mm aa",);
            SimpleDateFormat formatTimea = new SimpleDateFormat("MM/dd/yyyy HH:mm");
            String pickUpTime=(new Date());
            String pickUpDateTime = pickUpTime+" "+hour+":00";
            Date date = (pickUpDateTime);
            ("a: "+(date));
            
        }
        catch(Exception e){
            ();
        }
    }

 

2.

private static final SimpleDateFormat formatTimeAA = new SimpleDateFormat("MM/dd/yyyy hh:mm aa",);


    public Date getDate(String time,int hour) throws ParseException {
        String AA = " AM";
        if(hour>11){
            AA = " PM";
            if(hour>12){
                hour = hour -12;
            }
        }
        
        String pickUpDateTime = time+" "+hour+":00";

        pickUpDateTime = pickUpDateTime + AA;
        Date date = (pickUpDateTime);
        return date;
    }