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Hui-s-notebook
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0e31c0d985c41fefa41a0bddeccbdc77148aad8e
Hui-s-notebook
/
logseq-java
/
pages
/
泛型.md
Lostecho
c7947017c3
add logseq-java
2024-02-02 00:12:49 +08:00
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含有不同类型数据时,集合在
向下转型
时报错
用来规范集合中元素类型的一种技术
格式
<数据类型>
泛型类
泛型方法
泛型接口
泛型擦除
代码在编译期间
,
有编译器自动将Student替换原有的E
List
<
Student
>
student
=
new
ArrayList
<
Student
>
();
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