java - 在java中显示当前日期和最近5天的日期

Question

我想显示当前日期和最近 5 天的日期

2013/04/24
2013/04/23
2013/04/22
2013/04/21
2013/04/20

我的代码如下..

SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
    Calendar cal = Calendar.getInstance();
    Date date=cal.getTime();
for (int i=0;i<5;i++){
                   cal.add(Calendar.DAY_OF_MONTH,-1);
                   date=cal.getTime();
                   String reportDate = sdf.format(date);
                   System.out.println("reportDate :" + reportDate);
}

这里我得到如下输出..

reportDate :2013/04/23
reportDate :2013/04/22
reportDate :2013/04/21
reportDate :2013/04/20
reportDate :2013/04/19

但我想要最近五天的日期，包括当前日期...有人可以帮忙吗？

Answer 1

试试这个!!

public static void getDate(){
    GregorianCalendar cal = new GregorianCalendar();
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");

    int day = cal.get(GregorianCalendar.DAY_OF_MONTH);


        for(int i=day; i > (day-5); i--){
            cal.set(GregorianCalendar.DAY_OF_MONTH, i);

            Date date = cal.getTime();
            System.out.println(sdf.format(date));   
        }

}

v 2.0

public static void getDate1(){
    GregorianCalendar cal = new GregorianCalendar();
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");

    cal.set(2013, 0, 1); // this is extreme case!!!

    int day = cal.get(GregorianCalendar.DAY_OF_MONTH);
    int month = cal.get(GregorianCalendar.MONTH);
    int year = cal.get(GregorianCalendar.YEAR);

        for(int i=day; i > (day-5); i--){
            cal.set(year, month, i);

            Date date = cal.getTime();
            System.out.println(sdf.format(date));   
        }

}

这是输出:

2013/01/01 2012/12/31 2012/12/30 2012/12/29 2012/12/28