CODEWITHSUNDEEP
java
João Simões
João Simões

Reputation: 27

Java calling a method from SuperClass in interface

I'm currently developing a project which requires me to control robots.

I keep them in an array of RobotInterfaces, thing is, I got a super class named RobotMovement since all movement is equal for all robots.

The robot classes that implement the RobotInterface also extend the Super Class

How do I call the method move() from the super class in the array of interfaces?

Upvotes: 1

Views: 63

Answers (2)

Howard Wang
Howard Wang

Reputation: 601

class RobotMovement {
    public void move() {
       System.out.println("moving...");
    }
}

interface RobotInterface {
    public void move(); // add this
}

class Robot extends RobotMovement implements RobotInterface {
}

class Main {
    public static void main(String[] args) {
        List<RobotInterface> list = new ArrayList<RobotInterface>();
        list.add(new Robot());
        list.add(new Robot());
        for (RobotInterface ri: list) {
            ri.move();
        }
    }
}

Upvotes: 1

ruakh
ruakh

Reputation: 183270

The robot classes that implement the RobotInterface also extend the Super Class

How do I call the method move() from the super class in the array of interfaces?

You can declare the move() method in RobotInterface. That way Java will let you call move() on any expression of type RobotInterface, and Java will enforce the requirement that all instances of RobotInterface have an implementation of move().

Upvotes: 1

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