This code defines an abstract class `Shape` with an abstract...

May 12, 2024 at 04:23 PM

public abstract class Shape{ public abstract void draw(); } public class Square extends Shape{ @Override public void draw() { System.out.println("Drawing a square"); } } public class Circle extends Shape{ @Override public void draw() { System.out.println("Drawing a circle"); } } public class Test{ public static void main(String[] args) { Shape shape = new Circle(); System.out.println(shape instanceof Circle); System.out.println(shape instanceof Square); System.out.println(shape instanceof Object); } }

This code defines an abstract class Shape with an abstract method draw(). It also defines two concrete subclasses Square and Circle that extend the Shape class and implement the draw() method to print out "Drawing a square" and "Drawing a circle" respectively.

In the Test class, an instance of Circle is created and assigned to a variable of type Shape. The code then checks if the shape object is an instance of Circle, an instance of Square, and an instance of Object, printing out the results.

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