https://docs.google.com/document/d/1c9iMqd97tw0t6CdrPLVo4k21FV8Nald5/edit

#DuluxePizza.java

/*
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package question3;

/**
 *
 * @author std
 */
public class DuluxePizza extends Pizza{
    String topping;

    public DuluxePizza(String topping, double diameter, int numberOfSlice) {
        super(diameter, numberOfSlice);
        this.topping = topping;
    }

    @Override
    public String toString() {
        return topping + "\t" + super.toString();
    }
}

#Main.java

/*
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package question3;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author std
 */
public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter added toppings: ");
        String addedToppings = in.readLine();
        System.out.print("Enter diameter: ");
        double diamter = Double.parseDouble(in.readLine());
        System.out.print("Enter number of slices: ");
        int slices = Integer.parseInt(in.readLine());
        System.out.println("OUTPUT:");
        Pizza p = new Pizza(diamter, slices);
        System.out.println(p);
        p = new DuluxePizza(addedToppings, diamter, slices);
        System.out.println(p);
    }
}

#Pizza.java

/*
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 * and open the template in the editor.
 */
package question3;

/**
 *
 * @author std
 */
public class Pizza {
    double diameter;
    int numberOfSlice;

    public Pizza(double diameter, int numberOfSlice) {
        this.diameter = diameter;
        this.numberOfSlice = numberOfSlice;
    }

    @Override
    public String toString() {
        return diameter + "\t" + numberOfSlice;
    }
}