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字符串改成了解

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高宏宇
2024-03-20 09:20:39 +08:00
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03：类与对象/02.md
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@@ -148,7 +148,7 @@ Character类的`Character.isDigit(char)`，`Character.isLetter(char)`这些函
**在使用数值类封装类型的时候要特别注意！封装类型是引用类型，因此可能有一个特殊的值null；** **在使用数值类封装类型的时候要特别注意！封装类型是引用类型，因此可能有一个特殊的值null；**
## 3. 字符串 ## 3. 字符串(了解)
### 3.1. join和split ### 3.1. join和split