:

interface InterfaceA {
    default void display() {
        System.out.print("#");
    }
}

interface InterfaceB {
    void display();  // دالة مجردة
}

class ImplementationClass implements InterfaceA, InterfaceB {
    @Override
    public void display() {
        System.out.println("Display method in ImplementationClass");
    }
}

public class Main {
    public static void main(String[] args) {
        ImplementationClass obj = new ImplementationClass();

        obj.display();   
    }
}

type of inheriance

1.single inheriance
2.multilevel inheriance
3.Hierarchical inheriance
4.hybrid inheriance

الخامسة متدعمش فيها الجافا
5. multiple inheriance

why multiple inheriance is not supported in java???

to remove ambiguity
to provide more maintainable and clear design

methods interface

مصطلح constractor chaining

مقارنة مهمة