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Interfaces Using Extends - Java Quiz Question

What will be the output of the following program?

public class Example {

    public static void main(String args[]) {
        Area a = new Area();
        a.area1();
        a.area2();
    }
}

interface C {

    int side = 4;

    void area1();
}

interface D extends C {

    double length = 3.5;
    double breadth = 4.5;

    void area2();
}

class Area implements D {

    public void area1() {
        System.out.println(side * side);
    }

    public void area2() {
        System.out.println(length * breadth);
    }
}

	16 15.0
	16 15.75
	Some other output
	Compilation Error or Runtime Error

Topic: Extending Interface In Java (extends)

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