java - 日历 DATE 麻烦

Question

Date toDate = new Date(114, 5, 30);    
Calendar calendar = Calendar.getInstance();
            Calendar calendarTo = Calendar.getInstance();
            calendar.setTime(toDate);
            calendarTo.setTime(toDate);
            calendarTo.add(Calendar.DATE, 1);

这就是我初始化日历的方式，我试图将下一天放入calendarTo中但是当我得到calendar.Date时，它等于calendarTo.DATE并且等于5..为什么？我如何最终增加这个 DATE 值？

Answer 1

您得到的是 Calendar 类中 DATE 的默认值。这是 5

public final static int DATE = 5;

但是当我从代码中打印日期时，看起来没问题。

Date toDate = new Date(114, 5, 30);    
    Calendar calendar = Calendar.getInstance();
                Calendar calendarTo = Calendar.getInstance();
                calendar.setTime(toDate);
                calendarTo.setTime(toDate);
                calendarTo.add(Calendar.DATE, 1);

                System.out.println(toDate);//Mon Jun 30 00:00:00 IST 2014
                System.out.println(calendarTo.getTime());//Tue Jul 01 00:00:00 IST 2014