java这段代码看不会啊，求解释

Question

public class dog{
    int dogage,bodydog;
    public dog(String name){
        System.out.println("小狗的名字是："+name);
    }
    public void setage(int age){
      dogage = age;}

    public int getage(){System.out.println("小狗的年龄是："+dogage);

    return dogage;
    }
    public void setbody(int body){
        bodydog = body;
    }
    public int getbody(){System.out.println("小狗的身体状态为："+bodydog);
        return bodydog;
    }
    public static void main(String[] args){
        dog mydog = new dog("斯蒂夫");
        mydog.setage(11);
   mydog.getage();
   mydog.setbody(11);
   mydog.getbody();
    }

Answer 1

解答如图
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