增强的for循环 - 对象Array [英] Enhanced For Loop - Array of Objects

问题描述

好了，所以我有一个叫狗（），它有两个参数，一个字符串和一个整数类。

这个类有一个方法叫树皮（），这取决于传入狗（）构造函数整数它打印字符串。

Ok so I have a class called Dog() which takes two parameters, a string and an integer.
This class has a method called bark(), which prints a string depending on the integer passed into the Dog() constructor.

我也有））叫做养犬（一类，它创建了5个狗（数组...看起来是这样的：

I also have a class called Kennel() which creates an array of 5 Dog()s... looks like this:

public class Kennel
{
    Dog[] kennel = new Dog[5];
    public Kennel()
    {
        kennel[0] = new Dog("Harold",1);
        kennel[1] = new Dog("Arnold",2);
        kennel[2] = new Dog("Fido",3);
        kennel[3] = new Dog("Spot",4);
        kennel[4] = new Dog("Rover",5);
    }
}

对于新手来说，这个工作，但似乎是错误的。为什么我要开始与狗[] ...新的狗[5]也许愚蠢的问题...我是新来这个。

For starters, this works, but seems wrong. Why do I have to start with Dog[] ... new Dog[5]? Maybe stupid question... I'm new to this.

反正......我被要求做的是使用强化为遍历数组调用树皮迭代（）。

Anyway... What I have been asked to do is use the "enhanced" for loop to iterate through the array calling bark().

因此​​，与传统的for循环就应该是这样的：

So with a traditional for loop it would look like this:

for (i=0;i<kennel.length;i++)
{
    kennel[i].bark();
}

简单的东西，对不对？但我怎么使用的（项目类型：数组）实现这个？语法

Simple stuff, right? But how do I implement this using the for(type item : array) syntax?

推荐答案

只是用它在每个

for(Dog d : kennel) {
    d.bark();
}

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