開始使用new Date()測試,并用通過date.getMonth(),和date.getDay()獲取,不過后來發(fā)現(xiàn)這兩個訪求是jdk1.1版本的,現(xiàn)在已經(jīng)不用了,而且結(jié)果也不正確.

所以改用了Calendar

如下

  Calendar rightNow = Calendar.getInstance();

 int month  =rightNow.MONTH;
 int day = rightNow.DAY_OF_MONTH;

結(jié)果是month為2,而day為5,和現(xiàn)在的日期4.26沒有關(guān)系

我然后用System.out.println(rightNow);,不過輸出的很多內(nèi)容里面的MONTH和DAY_OF_MONTH是對的

后來,在網(wǎng)上查找,不能這么用

應(yīng)該用

 int month  = (date.get(Calendar.MONTH))+1;
        int day = date.get(Calendar.DAY_OF_MONTH);

獲取當(dāng)前的月份和日期

試了一下,果然正確

后來查看java doc文檔,MONTH字段解釋如下

Field number for get and set indicating the month. This is a calendar-specific value. The first month of the year is JANUARY which is 0; the last depends on the number of months in a year.

這個字段的值只是說明get()的屬性字段值,來獲取month的

以下為獲取其它:

Calendar cal = Calendar.getInstance();

        //當(dāng)前年
        int year = cal.get(Calendar.YEAR);
        //當(dāng)前月
        int month = (cal.get(Calendar.MONTH))+1;
        //當(dāng)前月的第幾天：即當(dāng)前日
        int day_of_month = cal.get(Calendar.DAY_OF_MONTH);
        //當(dāng)前時：HOUR_OF_DAY-24小時制；HOUR-12小時制
        int hour = cal.get(Calendar.HOUR_OF_DAY);
        //當(dāng)前分
        int minute = cal.get(Calendar.MINUTE);
        //當(dāng)前秒
        int second = cal.get(Calendar.SECOND);
        //0-上午；1-下午
        int ampm = cal.get(Calendar.AM_PM);
        //當(dāng)前年的第幾周
        int week_of_year = cal.get(Calendar.WEEK_OF_YEAR);
        //當(dāng)前月的第幾周
        int week_of_month = cal.get(Calendar.WEEK_OF_MONTH);
        //當(dāng)前年的第幾天
        int day_of_year = cal.get(Calendar.DAY_OF_YEAR);