From 555ad84bd7751834edb61bd74d610c6c13b39ed3 Mon Sep 17 00:00:00 2001
From: LingCoder <lingcoder@gmail.com>
Date: Mon, 25 Mar 2019 01:43:22 +0800
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---
 SUMMARY.md                  | 18 ++++++++--------
 book/19-Type-Information.md | 42 +++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 9 deletions(-)

diff --git a/SUMMARY.md b/SUMMARY.md
index 60afd31..7019f54 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -230,15 +230,15 @@
     * [StringTokenizer类](book/18-Strings.md#StringTokenizer类)
     * [本章小结](book/18-Strings.md#本章小结)
 * [第十九章 类型信息](book/19-Type-Information.md)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
-    * [](book/19-Type-Information.md#)
+    * [运行时类型信息](book/19-Type-Information.md#运行时类型信息)
+    * [类的对象](book/19-Type-Information.md#类的对象)
+    * [类型转换检测](book/19-Type-Information.md#类型转换检测)
+    * [注册工厂](book/19-Type-Information.md#注册工厂)
+    * [类的等价比较](book/19-Type-Information.md#类的等价比较)
+    * [反射运行时类信息](book/19-Type-Information.md#反射运行时类信息)
+    * [动态代理](book/19-Type-Information.md#动态代理)
+    * [Optional类](book/19-Type-Information.md#Optional类)
+    * [接口和类型](book/19-Type-Information.md#接口和类型)
     * [本章小结](book/19-Type-Information.md#本章小结)
 * [第二十章 泛型](book/20-Generics.md)
     * [](book/20-Generics.md#)
diff --git a/book/19-Type-Information.md b/book/19-Type-Information.md
index 4c1627b..8f38ac8 100644
--- a/book/19-Type-Information.md
+++ b/book/19-Type-Information.md
@@ -1,7 +1,49 @@
 [TOC]
 
+<!-- Type Information -->
 # 第十九章 类型信息
 
+
+<!-- The Need for RTTI -->
+## 运行时类型信息
+
+
+<!-- The Class Object -->
+## 类的对象
+
+
+<!-- Checking Before a Cast -->
+## 类型转换检测
+
+
+<!-- Registered Factories -->
+## 注册工厂
+
+
+<!-- Instanceof vs. Class Equivalence -->
+## 类的等价比较
+
+
+<!-- Reflection: Runtime Class Information -->
+## 反射运行时类信息
+
+
+<!-- Dynamic Proxies -->
+## 动态代理
+
+
+<!-- Using Optional -->
+## Optional类
+
+
+<!-- Interfaces and Type -->
+## 接口和类型
+
+
+<!-- Summary -->
+## 本章小结
+
+
 <!-- 分页 -->
 
 <div style="page-break-after: always;"></div>
\ No newline at end of file