笔记备份：2025-08-20 22:03:08

.obsidian/plugins/keep-the-rhythm/data.json

@@ -529,11 +529,11 @@
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.obsidian/plugins/novel-word-count/data.json

@@ -463,20 +463,20 @@
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A1-Work/语言/Java/基础学习.md

@@ -476,6 +476,9 @@ public class Test {
 ```
 7. 注意擦除后的冲突。
 
+### 通配符类型
+长这样：`<? extends Object>`，和 `<T extends Object>` 很像。
+
 ## JDK 特性
 
 ### JDK7