java Calendar类

 

public class CalendarDemo {
    public static void main(String[] args) {
        Date d = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy");
        String year = sdf.format(d);
        System.out.println(year);

        Calendar c = Calendar.getInstance();
        //可以使用查表法月份查询
        System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DAY_OF_MONTH)+"日");
    }
}

public class CalendarDemo {
    public static void main(String[] args) {
        Calendar c = Calendar.getInstance();
        c.set(2012,2,23);
        System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DAY_OF_MONTH)+"日");
        c.add(Calendar.YEAR,-4);
        System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DAY_OF_MONTH)+"日");
    }
}