使用子类参数重载子类（java）

My code is similar to this:

我的代码与此类似:

class Base{
    public void handleObject(A a){
        //more code...
        System.out.println("A");
    }
}

class Sub extends Base{
    public void handleObject(B b){
        //more code specific to this instance and class B
        System.out.println("B");
    }
    public void handleObject(C c){
        //more code specific to this instance and class C
        System.out.println("C");
    }
}
class