实现日期的增加

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.xml.crypto.Data;


public class Test{

    public static void main(String args[]) throws Exception{

        String str = "2000-01-01 01:55:00.000";
        String pat = "yyyy-MM-dd HH:mm:ss.SSS";

        SimpleDateFormat sdf = new SimpleDateFormat(pat);
        Date d = sdf.parse(str);
        System.out.println(d);
        Calendar cal = Calendar.getInstance();
        cal.setTime(d);
        cal.add(Calendar.MINUTE,10);

        d = cal.getTime();
        SimpleDateFormat sdf1 = new SimpleDateFormat(pat);
        String s = sdf1.format(d);
        System.out.println(s);

    }
}

运行结果：
Sat Jan 01 01:55:00 CST 2000
2000-01-01 02:05:00.000