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yennanliu · Nov 13, 2023 · db43d30 · db43d30
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diff --git a/doc/cheatsheet/java_trick.md b/doc/cheatsheet/java_trick.md
@@ -1,5 +1,9 @@
 # Java Tricks
 
+# Ref
+
+- [Syntax sugar](https://javaguide.cn/java/basis/syntactic-sugar.html#%E5%86%85%E9%83%A8%E7%B1%BB)
+
 # 0) Basic data structures
 
 - Java heap:

diff --git a/doc/faq/faq_java.md b/doc/faq/faq_java.md
@@ -6,6 +6,20 @@
 - https://cloud.tencent.com/developer/article/2183300
 
 
+### Java basic data type VS reference data type **** ?
+
 ### Exception VS Error ?
 
-- https://javaguide.cn/java/basis/java-basic-questions-03.html#%E5%BC%82%E5%B8%B8
+- https://javaguide.cn/java/basis/java-basic-questions-03.html#%E5%BC%82%E5%B8%B8
+
+### Java serialize, deserializes ?
+
+- https://javaguide.cn/java/basis/serialization.html#%E6%80%BB%E7%BB%93
+
+### Java @transient explain ?
+
+- https://www.cnblogs.com/huzi007/p/6600559.htmls
+
+### try-with-resource VS try-catch-final ?
+
+- https://javaguide.cn/java/basis/syntactic-sugar.html#try-with-resource