笔记备份：2025-08-19 23:31:46

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

@@ -520,11 +520,11 @@
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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

@@ -413,6 +413,13 @@ ArrayAlg.getMiddle("Hello", 0, null);
 ```
 通过报错来分析。
 
+### 类型变量的限定
+将类型变量限定到一个范围：
+```Java
+// 将 T 限定为 Object 的子类
+public static <T extends Object> T min(T... a);
+```
+
 ## JDK 特性
 
 ### JDK7