diff --git a/src/chapter5/Example23.java b/src/chapter5/Example23.java
index 4b18e7a..7c51a44 100644
--- a/src/chapter5/Example23.java
+++ b/src/chapter5/Example23.java
@@ -1,4 +1,19 @@
 package chapter5;
 
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
 public class Example23 {
+    public static void main(String[] args) {
+        // 1. 获取当前时间
+        LocalDateTime now = LocalDateTime.now();
+        System.out.println("原格式：" + now);
+        System.out.println("只有日期：" + now.toLocalDate());
+        System.out.println("只有时间：" + now.toLocalTime());
+        // 2. getter 方法
+        System.out.println(now.getYear() +"年" + now.getMonthValue() + "月" + now.getDayOfMonth() + "号 "
+            + now.getHour() + "点" + now.getMinute() + "分" + now.getSecond() + "秒");
+        // 3. 指定格式
+        System.out.println("指定格式：" + now.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
+    }
 }