From 9fb11f6525c9f603fc8d50517faf9711984afedb Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Fri, 30 Sep 2022 09:46:49 +0800
Subject: [PATCH] add method

---
 .../java/cn/hutool/core/date/DateTime.java    | 18 +++++++++++++++++
 .../java/cn/hutool/core/date/DateUtil.java    | 20 +++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/hutool-core/src/main/java/cn/hutool/core/date/DateTime.java b/hutool-core/src/main/java/cn/hutool/core/date/DateTime.java
index 25bfeae79..30e0decdb 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/DateTime.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/DateTime.java
@@ -943,6 +943,24 @@ public class DateTime extends Date {
 		return this;
 	}
 
+	/**
+	 * 是否为本月最后一天
+	 * @return 是否为本月最后一天
+	 * @since 5.8.8
+	 */
+	public boolean isLastDayOfMonth(){
+		return dayOfMonth() == getLastDayOfMonth();
+	}
+
+	/**
+	 * 获得本月的最后一天
+	 * @return 天
+	 * @since 5.8.8
+	 */
+	public int getLastDayOfMonth(){
+		return monthEnum().getLastDay(isLeapYear());
+	}
+
 	// -------------------------------------------------------------------- toString start
 
 	/**
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
index ab213acd9..7e1d9a880 100755
--- a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
@@ -2004,6 +2004,26 @@ public class DateUtil extends CalendarUtil {
 		return startTime.before(realEndTime) && endTime.after(realStartTime);
 	}
 
+	/**
+	 * 是否为本月最后一天
+	 * @param date {@link Date}
+	 * @return 是否为本月最后一天
+	 * @since 5.8.8
+	 */
+	public static boolean isLastDayOfMonth(final Date date){
+		return date(date).isLastDayOfMonth();
+	}
+
+	/**
+	 * 获得本月的最后一天
+	 * @param date {@link Date}
+	 * @return 天
+	 * @since 5.8.8
+	 */
+	public static int getLastDayOfMonth(final Date date){
+		return date(date).getLastDayOfMonth();
+	}
+
 	// ------------------------------------------------------------------------ Private method start
 
 	/**