public abstract class Demo{
    public Demo(){
        this.print();
    }

    public abstract void print();
}

public class NewDemo extends Demo{
    public NewDemo (){
        this.print();
    }

    @Override
    public void print() {
        System.out.println("NewDemo");
    }
}

public class  Test{
     public static void main(String args[]){
        NewDemo  a =new NewDemo ();
     }
}

Java中this关键字不是指向当前对象。为啥在Demo构造器中能调用子类的print()方法？
抽象类的中的this指向谁？