cron expression based on hutool-cron

pattern-tutor/pattern-tutor-syntax/pom.xml

@@ -60,5 +60,16 @@
 		   <artifactId>dnsjava</artifactId>
 		   <version>2.1.8</version>
 		</dependency> -->
+
+		<!-- <dependency>
+		    <groupId>com.cronutils</groupId>
+		    <artifactId>cron-utils</artifactId>
+		    <version>9.0.2</version>
+		</dependency> -->
+		<dependency>
+		    <groupId>cn.hutool</groupId>
+		    <artifactId>hutool-cron</artifactId>
+		    <version>5.2.2</version>
+		</dependency>
 	</dependencies>
 </project>

pattern-tutor/pattern-tutor-syntax/src/main/java/com/pattern/tutor/syntax/timer/CrontabExample.java

@@ -0,0 +1,33 @@
+package com.pattern.tutor.syntax.timer;
+
+import java.util.Date;
+
+import cn.hutool.cron.CronUtil;
+
+/**
+ * <p>
+ * 	 通过指定cron方式执行任务<br/>
+ * 	资料链接<a href="https://www.bookstack.cn/read/hutool/0f082d6e35363da6.md">https://www.bookstack.cn/read/hutool/0f082d6e35363da6.md</a>
+ * </p>
+ * 
+ * @author buildupchao
+ * @date 2020/3/13
+ */
+public class CrontabExample {
+
+	public static void main(String[] args) throws InterruptedException {
+		CronUtil.schedule("18 17 * * *", new Runnable() {
+
+			@Override
+			public void run() {
+				System.out.println("test cron task, it's real! time is " + new Date());
+			}
+		});
+		CronUtil.start();
+		while (true) {
+			Thread.sleep(1000);
+			System.out.println("wait print..." + new Date());
+		}
+	}
+
+}