Java对象数组练习

Java对象数组的使用.
题目:
有四只狗
为狗创建一个对象数组.
为狗赋名字和体重
算出狗平均体重.
用面向对象的思路和利用数组来完成
还有什么要注意的希望大家教教我..

package com.test_1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Demo5_2 {

    public static void main(String[] args) throws Exception {
        //定义一个对象数组
        Dog dogs [ ] = new Dog[4];
        /*//给狗赋值
        dogs[0] = new Dog();
        dogs[0].setName("小白");
        dogs[0].setWeight(4.5f);*/

        //从控制台输入各个狗的信息
        BufferedReader br =new BufferedReader(new InputStreamReader(System.in));

        for(int i = 0;i<dogs.length;i++){
            //重要: 一定要新建狗对象
            dogs [i] = new Dog();
            System.out.println("请输入第"+(i+1)+"只狗名");
            //从控制台读取狗名
            String name = br.readLine();
            //将名字赋给对象
            dogs [i].setName(name);
            System.out.println("请输入第"+(i+1)+"只狗体重");
            //从控制台读取狗体重
            String s_weight = br.readLine();
            //字符串转float(类型 . parse类型())
            float weight = Float.parseFloat(s_weight);
            //将名字赋给对象
            dogs [i].setWeight(weight);

        }

        //计算狗总体重
        float w = 0;
        for(int i = 0;i<dogs.length;i++){
            w+=dogs[i].getWeight();
        }
        //计算平均体重
        System.out.println("狗平均体重: "+w/dogs.length);
    }

}

//定义一个狗类
class Dog{
    private String name;
    private float weight;

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public float getWeight() {
        return weight;
    }
    public void setWeight(float weight) {
        this.weight = weight;
    }

}