kotlin中既繼承又實現

繼承中的主要沖突 (Overriding Conflicts in Inheritance)

• It may appear, we inherit more than one implementation of the same method.

  看來，我們繼承了同一方法的多個實現。

• Need to implement all the methods which we have inherited from multiple interfaces.

  需要實現我們從多個接口繼承的所有方法。

解決Kotlin中繼承中的主要沖突 (Resolving Overriding Conflicts in Inheritance in Kotlin)

package com.includehelp// declare interface interface One{// abstract functionfun myName()// function with implementationfun sayHello(){println("Hello, 'From Interface One' ")} }interface Two{// function with implementationfun sayHello(){println("Hello, 'From Interface Two' ")}// function with implementationfun myName(){println("My Name is Interface 'Two'")} }// class implementing interface class Three:One{// override interface abstract methodoverride fun myName() {println("My Name is Class Three")} }// class implementing more then one interfaces class Four:One,Two{// need to implement all the methods // which we have inherited from multiple interfacesoverride fun sayHello() {// Both interface have sayHello implementation in interfaces,// so explicitly define Interface name in super to call, // specific implementation from classsuper<One>.sayHello()super<Two>.sayHello()println("Hello, From Class 'Four' ")}// need to implement all the methods // which we have inherited from multiple interfacesoverride fun myName() {// called super type implementation of method,// only interface two have implementation of this method, // so need to explicitly define interface namesuper.myName()println("My Name is Class Four")}}// Main function, Entry point of program fun main(){// create class instanceval four = Four()// call methodsfour.myName()// call methodsfour.sayHello() }

Output:

輸出：

My Name is Interface 'Two' My Name is Class Four Hello, 'From Interface One' Hello, 'From Interface Two' Hello, From Class 'Four'

翻譯自: https://www.includehelp.com/kotlin/example-of-resolving-overriding-conflicts-in-inheritance.aspx

kotlin中既繼承又實現

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