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+# 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%;" />