Question

Java - Write an abstract class called Shape with a string data field called colour. Write a getter and setter for colour. Write a constructor that takes colour as the only argument. Write an abstract method called getArea()

Answer 1

Here is the code for the problem:

//The abstract class called Shape
abstract class Shape {
   //The strin variable to set the color
   String color;

   Shape(String color){
       this.color = color;
   }

   //getter method for color
   public String getColor() {
       return color;
   }
   //setter method for color
   public void setColor(String color) {
       this.color = color;
   }

   abstract void getArea();
}
//Driver class that extends the above abstrcat class
public class AbstractClassExample extends Shape {
   //The test class constructor
   AbstractClassExample() {
       //calls the Super class constructor
       super("Blue");
   }
  
   void getArea()
   {
       System.out.println("The getArea() method");
   }
   public static void main(String[] args) {
       //Instantiating the abstract class using the extended class
       AbstractClassExample shape = new AbstractClassExample();
       //setting the color of the shape
       shape.setColor("Blue");
       //output the color set for the shape
       System.out.println("The color set is: " + shape.getColor());

       shape.getArea();
   }
}

SCREENSHOT:

OUTPUT: