Create multi object with 1 class

package multiobj;

import java.util.ArrayList;

public class MultiObj {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        ArrayList<B> arrB = new ArrayList<B>();
        B objB = new B();
        int sll = 3;
        for (int i = 0; i < sll; i++){
            arrB.add(objB);
        }

    }



}

class A{}

class B extends A{
    B(){}
}