How to use the before(), after() and equals() methods of the Calendar class in Java?

Calender.before(), Calender.after() and Calender.equals()

Compare two Date dates using java.util.Calendar

<code>@Test<br>void 
testDateCompare3(
) throws ParseException {<br>  SimpleDateFormat sdf = 
new SimpleDateFormat("yyyy-MM-dd");<br>  Date date1 = sdf.parse("2009-12-31");<br>  Date date2 = sdf.parse("2019-01-31");<br><br>  System.out.println("date1 : " + sdf.format(date1));<br>  System.out.println("date2 : " + sdf.format(date2));<br><br>  Calendar cal1 = Calendar.getInstance();<br>  Calendar cal2 = Calendar.getInstance();<br>  cal1.setTime(date1);<br>  cal2.setTime(date2);<br><br>  if (cal1.after(cal2)) {<br>    System.out.println("Date1 时间在 Date2 之后");<br>  }<br><br>  if (cal1.before(cal2)) {<br>    System.out.println("Date1 时间在 Date2 之前");<br>  }<br><br>  if (cal1.equals(cal2)) {<br>    System.out.println("Date1 时间与 Date2 相等");<br>  }<br>}<br></code>

Output results:

<code>date1 : 2009-12-31<br>date2 : 2019-01-31<br>Date1 时间在 Date2 之前</code>

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