面向对象_使用static实现数羊

public class oneHundredAndTwo {
    public static void main(String[] args) {
        Sheep p1 = new Sheep("喜洋洋");
        Sheep p2 = new Sheep("懒洋洋");
        Sheep p3 = new Sheep("美洋洋");
        
        System.out.println(Sheep.getCount());//获取羊的数量
        
    }
}
class Sheep{
    private String name;
    private static int count = 0;//计数器
    
    public Sheep(String name) {
        super();
        this.name = name;
        count++;//每创建一个对象都会从这里初始化，所以count在这里++就行了
    }
    
    //获取羊的数量
    public static int getCount(){
        return count;
    }
}