《java编程思想 泛型》鸭子类型 - 简书 https://www.jianshu.com/p/db4274701be3
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《java编程思想 泛型》鸭子类型 - 简书 https://www.jianshu.com/p/db4274701be3
Java 泛型 | 菜鸟教程 https://www.runoob.com/java/java-generics.html
Java 重写(Override)与重载(Overload) | 菜鸟教程 https://www.runoob.com/java/java-override-overload.html