java 新手求救 有关运行时出现错误 没有达到目的 是哪里出错了

Question

import java.util.Scanner;
class Dog
{private int size;//利用封装的方法，定义size变量，使得size变量的值始终大于10
 public void setsize(int s){
	if(s>10)
		size=size;
 }
 public void Bark(){
	if(size>60){
		System.out.println(size);
		System.out.println("Woof!");
	}
	else if(size>40&&size<=60){
		System.out.println(size);
		System.out.println("Ruff!");
	}
	else{
		System.out.println(size);
		System.out.println("Yip!");
	}
 }/*编写bark方法，size值>60的时候输出“Woof!”;size值>40的时候输出“Ruff!”；其他时候输出"Yip!"*/
}

public class DogTestDrive
{public static void main(String[] args){
	Dog a=new Dog();
	Dog b=new Dog();
	Dog c=new Dog();//创建至少三个Dog对象
	System.out.println("Please input the sizes of three dogs following the order of'a,b,c' individed by','.");
	Scanner input=new Scanner(System.in);
    String in=input.nextLine();
	String[] p=in.split(",");
	int[] shu=new int[3];
	for (int i=0;i<3 ;i++ )
	{shu[i]=Integer.parseInt(p[i]);
	}
	a.setsize(shu[0]);
	b.setsize(shu[1]);
	c.setsize(shu[2]);//为每个对象设定或输入size的大小
	System.out.printf("the dog a's size of bark is ");
	a.Bark();
	System.out.printf("the dog b's size of bark is ");
	b.Bark();
	System.out.printf("the dog c's size of bark is ");//输出每个Dog对象的size大小
	c.Bark();
	//调用bark方法输出不同size大小的叫声
 }
}