📝 update datetimeapi example

hellokaton · hellokaton · commit d6714d8020af · 2018-03-03T20:47:30.000+08:00
diff --git a/java8-datetime-api/src/main/java/io/github/biezhi/datetime/ClockExample.java b/java8-datetime-api/src/main/java/io/github/biezhi/datetime/ClockExample.java
@@ -0,0 +1,23 @@
+package io.github.biezhi.datetime;
+
+import java.time.Clock;
+import java.time.Instant;
+import java.util.Date;
+
+/**
+ * Clock &#31034;&#20363;
+ *
+ * @author biezhi
+ * @date 2018/3/3
+ */
+public class ClockExample {
+
+    public static void main(String[] args) {
+        Clock   clock      = Clock.systemDefaultZone();
+        long    millis     = clock.millis();
+        Instant instant    = clock.instant();
+        Date    legacyDate = Date.from(instant);   // legacy java.util.Date
+        System.out.println(millis);
+        System.out.println(legacyDate);
+    }
+}
