如何继承构造函数从超类到子类 [英] how to inherit Constructor from super class to sub class

问题描述

如何将构造函数从超类继承到子类？

How to inherit the constructor from a super class to a sub class?

推荐答案

构造函数不会继承，

这是一个如何工作的例子：

Here is an example of how this works:

class Foo {
    Foo(String str) { }
}

class Bar extends Foo {
    Bar(String str) {
        // Here I am explicitly calling the superclass 
        // constructor - since constructors are not inherited
        // you must chain them like this.
        super(str);
    }
}

这篇关于如何继承构造函数从超类到子类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！