在此示例中,您将学习如何确定两个定义的日期对象是否在同一天。这意味着我们只对日期信息感兴趣,而忽略这些日期对象的时间信息。在此示例中,我们将使用Apache Commons Lang提供的API。所以这是代码片段:
package org.nhooo.example.commons.lang; import org.apache.commons.lang3.time.DateUtils; import java.util.Calendar; import java.util.Date; public class CheckSameDay { public static void main(String[] args) { Date date1 = new Date(); Date date2 = new Date(); // 检查日期是否在同一天。 if (DateUtils.isSameDay(date1, date2)) { System.out.printf("%1$te/%1$tm/%1$tY and %2$te/%2$tm/%2$tY " + "is on the same day.%n", date1, date2); } Calendar cal1 = Calendar.getInstance(); Calendar cal2 = Calendar.getInstance(); // 检查日历是否在同一天。 if (DateUtils.isSameDay(cal1, cal2)) { System.out.printf("%1$te/%1$tm/%1$tY and %2$te/%2$tm/%2$tY " + "is on the same day.%n", cal1, cal2); } cal2.add(Calendar.DAY_OF_MONTH, 10); if (!DateUtils.isSameDay(cal1, cal2)) { System.out.printf("%1$te/%1$tm/%1$tY and %2$te/%2$tm/%2$tY " + "is not on the same day.", cal1, cal2); } } }
此代码段产生的示例结果是:
24/07/2019 and 24/07/2019 is on the same day. 24/07/2019 and 24/07/2019 is on the same day. 24/07/2019 and 3/08/2019 is not on the same day.
Maven依赖
<!-- https://search.maven.org/remotecontent?filepath=org/apache/commons/commons-lang3/3.9/commons-lang3-3.9.jar --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.9</version> </dependency>