添加dateutil

Author: xqs

src/main/java/com/devil/utils/DateUtil.java

@@ -0,0 +1,38 @@
+package com.devil.utils;
+
+import java.util.Calendar;
+import java.util.Date;
+
+public class DateUtil {
+	private static final long ADAY = 24 * 60 * 60 * 1000;
+
+	public static int getDate(Date d) {
+		Calendar cld = Calendar.getInstance();
+		cld.setTime(d);
+		return cld.get(Calendar.DAY_OF_MONTH);
+	}
+
+	public static Date getDateStart(Date d) {
+		Calendar cld = Calendar.getInstance();
+		cld.setTime(d);
+		cld.set(Calendar.HOUR_OF_DAY, 0);
+		cld.set(Calendar.MINUTE, 0);
+		cld.set(Calendar.SECOND, 0);
+		cld.set(Calendar.MILLISECOND, 0);
+		return cld.getTime();
+	}
+
+	public static boolean sameDay(Date d1, Date d2) {
+		return d1.getTime() / ADAY == d2.getTime() / ADAY;
+	}
+
+	public static boolean sameMonth(Date d1, Date d2) {
+		Calendar cld = Calendar.getInstance();
+		cld.setTime(d1);
+		Calendar cld2 = Calendar.getInstance();
+		cld2.setTime(d2);
+		boolean yeareq = cld.get(Calendar.YEAR) == cld2.get(Calendar.YEAR);
+		boolean montheq = cld.get(Calendar.MONTH) == cld2.get(Calendar.MONTH);
+		return montheq && yeareq;
+	}
+}