56、salesforce学习笔记（三）

Date类型Datetime nowDatetime = Datetime.now();Datetime datetime1 = Datetime.newInstance(2015,3,1,13,26,0);String datetimeString = '2016-3-1 PM14:38';System.debug('通过初始化年月日时分秒得到的Datetime,并转换格式到:'+datetime1.format('yyyy-MM-dd HH:mm:ss'));System.debug('当前日期时间:' + nowDatetime.format());datetime1 = datetime1.addDays(1);datetime1 = datetime1.addMonths(1);datetime1 = datetime1.addYears(1);datetime1 = datetime1.addHours(1);datetime1 = datetime1.addMinutes(1);datetime1 = datetime1.addSeconds(1);System.debug('更改后的日期时间:'+datetime1.format('yyyy-MM-dd HH:mm:ss'));Date date1 = datetime1.date();System.debug('datetime1对应的Date为:'+date1.format());Date dateGmt = datetime1.dateGmt();System.debug('datetime1对应的DateGmt值为:'+dateGmt.format());Integer year = datetime1.year();Integer yearGmt = datetime1.yearGmt();Integer month = datetime1.month();Integer monthGmt = datetime1.monthGmt();Integer day = datetime1.day();Integer dayGmt = datetime1.dayGmt();Integer dayOfYear = datetime1.dayOfYear();Integer dayOfYearGmt = datetime1.dayOfYearGmt();Integer hour = datetime1.hour();Integer hourGmt = datetime1.hourGmt();Integer minute = datetime1.minute();Integer minuteGmt = datetime1.minuteGmt();Integer second = datetime1.second();Integer secondGmt = datetime1.secondGmt();System.debug('year:'+year+'\tyearGmt:'+yearGmt);System.debug('month:'+month+'\tmonthGmt:'+monthGmt);System.debug('day:'+day+'\tdayGmt:'+dayGmt);System.debug('hour:'+hour+'\thourGmt:'+hourGmt);System.debug('minute:'+minute+'\tminuteGmt:'+minuteGmt);System.debug('second:'+second+'\tsecondGmt:'+secondGmt);System.debug('dayOfYear:'+dayOfYear+'\tdayOfYearGmt:'+dayOfYearGmt);System.debug('转成本地日期并以长日期类型显示:'+datetime1.formatLong());Long timeL = datetime1.getTime();System.debug('转成time类型的Long类型显示为:'+timeL.format());Datetime datetime5 = Datetime.newInstance(2016, 4 ,2);System.debug('datetime1与datetime2是否同一天:'+datetime1.isSameDay(datetime5));