java——继承与多态——多态001

Myth丶恋晨 2024-04-01 18:20 115阅读 0赞

**多态的概述：**

![f92ba3e00a4b8bbf85f7afb47079148a.png][]

**多态的格式与使用：**

![4da4be57c3abffbfd2d42c504420f45a.png][]

![47668627c0b908130937670a0721da12.png][]

![5207b9b5a59b4934efc25769998f1375.png][]

**多态中成员变量的使用特点：**

![072266f2262e51d0628b5ba432a79b8d.png][]

![b77e92b0fbf966b4848eadd0c9fe04f7.png][]

![233b37289eedca2ac60c431083811219.png][]

![8d8caa728460eae2c4e1a963b021d246.png][]

![c168ddd8e8fdb6ed304075669c6d0f24.png][]

![49ea74a4cc23d3cfb051e288aa611859.png][]

![035bb15aa230bfc22a153a89933c76f1.png][]

![3674ba5ae380314be2d2d52a080d7da6.png][]

![228c62bb09e35ba7c19eb860fa9dc87e.png][]

![eb98d8b53e9845957a3af06c1a0ca5aa.png][]

![372e6f15126c453f087b5f8050ad6b1f.png][]

**多态中成员方法的使用特点：**

![5b24b6575e4ef7dde4b425cdd58ad120.png][]

![409c0d1e21caffa6be71c00492dcc1d5.png][]

![dfa4666ff36cd22b9c40515cb035ea54.png][]

**使用多态的好处：**

![cfe9daaca32ce4554be61e85f9a31f6d.png][]

**对象的向上转型：**

![34d284bea2869f52d471668513a1d114.png][]

**对象的向下转型：**

![d1ff402cf088440f2e62ca66f0e80bf7.png][]

![0730abecf7e01e2784410704b4ac8628.png][]

**用instanceof关键字进行类型判断：**

![7260ac7dace63f8f9fda5a8a8d649483.png][]

![ebc09321bcd9d0436997ffe987211774.png][]

![bcde01e155cac24e75d079676b9ace25.png][]

![916af556abb71054e0a8a30fc9fdde00.png][]

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