优化Calendar

src/main/java/com/nlf/calendar/ExactDate.java

@@ -0,0 +1,30 @@
+package com.nlf.calendar;
+
+import java.util.Calendar;
+import java.util.Date;
+
+/**
+ * 精确日期
+ *
+ * @author 6tail
+ */
+public class ExactDate {
+
+  public static Calendar fromYmdHms(int year, int month, int day, int hour, int minute, int second) {
+    Calendar c = Calendar.getInstance();
+    c.set(year, month - 1, day, hour, minute, second);
+    c.set(Calendar.MILLISECOND, 0);
+    return c;
+  }
+
+  public static Calendar fromYmd(int year, int month, int day) {
+    return fromYmdHms(year, month, day, 0, 0, 0);
+  }
+
+  public static Calendar fromDate(Date date) {
+    Calendar c = Calendar.getInstance();
+    c.setTime(date);
+    c.set(Calendar.MILLISECOND, 0);
+    return c;
+  }
+}