统计创建对象数程序

//作者：冯晨
//日期：2018.10.21
package TongJiDuiXiang;

public class Tongji {
    public static int num=0;
    public Tongji() {
        num++;
    }
    public static void main(String[] args) {
        Tongji i=new Tongji();
        System.out.println(num);
    }
}

 运行结果:1