Java时间大小比较

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import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;public class Test {private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");private static SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public static void main(String[] args) throws Exception {//Date1.after(Date2),当Date1大于Date2时，返回TRUE，当小于等于时，返回false； //Date1.before(Date2)，当Date1小于Date2时，返回TRUE，当大于等于时，返回false；Date startDate = sdf.parse("2016-11-01");Date endDate = sdf.parse("2016-11-03");Date currDate = sdf.parse("2016-11-03");//当前时间大于开始时间并且小于结束时间允许捐赠if(currDate.after(startDate) && currDate.before(endDate)){System.out.println("--允许捐赠---------");}//当前时间小于开始时间，捐赠未开始if(currDate.before(startDate)){System.out.println("--捐赠未开始---------");}//当前时间大于结束时间，捐赠已结束if(currDate.after(endDate)){System.out.println("--捐赠已结束---------");}System.out.println("当前时间大于开始时间true:" + currDate.after(startDate));System.out.println("当前时间小于结束时间true:" + currDate.before(endDate));Calendar calendar = Calendar.getInstance();Date currentDate = calendar.getTime();String s1 = "2016-12-01";String s2 = "2016-12-02";Calendar startTime = Calendar.getInstance();Calendar endTime = Calendar.getInstance();startTime.setTime(sdf.parse(s1));startTime.set(Calendar.HOUR_OF_DAY, 0);startTime.set(Calendar.SECOND,0);startTime.set(Calendar.MINUTE,0);System.out.println("startTime : " + sdf1.format(startTime.getTime()));endTime.setTime(sdf.parse(s2));endTime.set(Calendar.HOUR_OF_DAY, 23);endTime.set(Calendar.SECOND,59);endTime.set(Calendar.MINUTE,59);System.out.println("endTime : " + sdf1.format(endTime.getTime()));Calendar current = Calendar.getInstance();System.out.println("current : " + sdf1.format(current.getTime()));//current.setTime(sdf.parse("2016-12-02"));//0-等于，1-大于，-1小于//当前时间大于开始时间并且小于结束时间允许捐赠System.out.println(current.compareTo(startTime));System.out.println(current.compareTo(endTime));if((current.compareTo(startTime) == 1 || current.compareTo(startTime) == 0) && ( current.compareTo(endTime) == -1 || current.compareTo(endTime) == 0)){System.out.println("--允许捐赠---------");}//当前时间小于开始时间，捐赠未开始if(current.compareTo(startTime) == -1){System.out.println("--捐赠未开始---------");}//当前时间大于结束时间，捐赠已结束if(current.compareTo(endTime) == 1){System.out.println("--捐赠已结束---------");}}}
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