How Different between These Object

public class Solution {
    public static void main(String[] args) {
        Cat cat = new TomCat();
        TomCat cat2 = new TomCat();
    }

    interface CanMove {
    }

    static class Cat implements CanMove {
    }

    static class TomCat extends Cat {

    }
}

I want to know how different between cat1 and cat2 form this code. I think cat1 is cat2 , or cat2 is cat1. they are same. Please help explain to me (I truly understand or I mistake)

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Robird

Level 26 , Warsaw

20 August 2021, 19:35

Difference is that you can write some method in Tomcat class and use it in cat2, in cat you are restricted to CanMove and Cat . if you have method run() in Tomcat class , you can use cat2.run(); but you cant cat.run() , if you want do that cat.run(), you will have to cast cat to Tomcat : (Tomcat)cat.run()

Khongpak Phupkdee

Level 15 , Chiangrai, Thailand

21 August 2021, 01:54

Thank you very much 😍🥰