package cn.edu.zust.dubbo;

public class Singleton {
    private int number =2025;
    public void setNumber(int number){
        this.number=number;
    }
    public int getNumber(){
        return number;
    }
    private static Singleton instance =new Singleton();
    private Singleton(){}
    public  static  Singleton getInstance(){
        return  instance;
    }
}