33 lines
974 B
Markdown
33 lines
974 B
Markdown
# 泛型
|
||
|
||
介绍：
|
||
|
||
JDK5版本后引入，用处为编译阶段约束数据类型，并例行检查。
|
||
|
||
好处：
|
||
|
||
统一了数据类型，将运行期的错误提到了编译期。
|
||
|
||
注意：
|
||
|
||
泛型只能用引用数据类型
|
||
|
||
## 泛型类
|
||
|
||
<img src="https://gitee.com/icecat2233/picture/raw/master/20250428164803021.png" alt="image-20250428164753200" style="zoom:80%;" />
|
||
|
||
## 泛型方法
|
||
|
||
<img src="https://gitee.com/icecat2233/picture/raw/master/20250428164850644.png" alt="image-20250428164848721" style="zoom:67%;" />
|
||
|
||
## 泛型接口
|
||
|
||
<img src="https://gitee.com/icecat2233/picture/raw/master/20250428165135118.png" alt="image-20250428165133488" style="zoom: 67%;" />
|
||
|
||
## 泛型通配符
|
||
|
||
<img src="https://gitee.com/icecat2233/picture/raw/master/20250428165220144.png" alt="image-20250428165218560" style="zoom:67%;" />
|
||
|
||
## 总结
|
||
|
||
<img src="https://gitee.com/icecat2233/picture/raw/master/20250428165312329.png" alt="image-20250428165310376" style="zoom: 60%;" /> |