接受多种类型作为单个参数的Java方法 [英] Java method that accepts multiple types as a single parameter

问题描述

假设我有两个自定义类和一个方法，如下所示:

Suppose I have two custom classes and a method as follows:

class A {
  public void think() {
    // do stuff
  }
}

class B {
  public void think() {
    // do other stuff
  }
}

Class C {
  public void processStuff(A thinker) {
    thinker.think();
  }
}

有没有办法像这样写processStuff()(只是说明):

Is there a way to write processStuff()as anything like this (just illustrating):

public void processStuff({A || B} thinker) {...}

或者换句话说，是否有一种方法可以编写一个带有一个可以接受多种类型的参数的方法，从而避免多次键入processStuff()方法?

Or, in other words, is there a way to write a method with a one parameter that accepts multiple types, as to avoid typing the processStuff() method multiple times?

推荐答案

在接口中定义所需的行为，使A和B实现该接口，并声明您的processStuff作为参数接口的实例.

Define the behavior you want in an interface, have A and B implement the interface, and declare your processStuff to take as an argument an instance of the interface.

interface Thinker {
    public void think();
}

class A implements Thinker {
    public void think() { . . .}
}

class B implements Thinker {
    public void think() { . . .}
}

class C {
    public void processStuff(Thinker thinker) {
        thinker.think();
    }
}

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