count.java

Java程序

class Number
{static int num=0;
 Number()
 {num=num+1;}
 public int getnum()
 {return num;
 }
}
public class count
{public static void main(String args[])
 {  Number aa=new Number();
    Number bb=new Number();
    Number cc=new Number();
    System.out.println("The all number of object is "+cc.getnum());
   }
}