Answer to Question #308772 in Java | JSP | JSF for Mia

Question

Write an application for a lawn-mowing service. The lawn-mowing season lasts 20 weeks. The weekly fee for mowing a lot under 4,000 square feet is R25. The fee for a lot that is 4,000 square feet or more, but under 6,000 square feet, is R35 per week. The fee for a lot that is 6,000 square feet or over is R50 per week. Prompt the user for the length and width of a lawn USING JOPTIONPANE, and then display the weekly mowing fee USING JOPTIONPANE , as well as the 20-week seasonal fee. Save the file as Lawn.java.

Marks allocation

1. The use of class and object - 10

2. The use of JOption for input -10

3. The use of JOption for output-10

4. correct out -10

Answer 1

import javax.swing.JOptionPane;


class Lawn {
	private double length;
	private double width;


	public Lawn() {
	}


	public Lawn(double length, double width) {
		this.length = length;
		this.width = width;
	}


	public double calculateWeeklyFee() {
		double area = calculateArea();
		// The weekly fee for mowing a lot under 4,000 square feet is R25.
		if (area < 4000) {
			return 25;
		}
		// The fee for a lot that is 4,000 square feet or more,
		// but under 6,000 square feet, is R35 per week.
		if (area >= 4000 && area < 6000) {
			return 35;
		}
		// The fee for a lot that is 6,000 square feet or over is R50 per week.
		return 50;
	}


	public double calculateArea() {
		return this.length * this.width;
	}


	/**
	 * @return the length
	 */
	public double getLength() {
		return length;
	}


	/**
	 * @param length the length to set
	 */
	public void setLength(double length) {
		this.length = length;
	}


	/**
	 * @return the width
	 */
	public double getWidth() {
		return width;
	}


	/**
	 * @param width the width to set
	 */
	public void setWidth(double width) {
		this.width = width;
	}


}


class App {


	public static void main(String[] args) {
		double length = Double.parseDouble(JOptionPane.showInputDialog("Enter the length of a lawn: "));
		double width = Double.parseDouble(JOptionPane.showInputDialog("Enter the width of a lawn: "));
		Lawn l = new Lawn(length, width);
		double weekSeasonalFee20 = l.calculateWeeklyFee() * 20;
		String output = "Your lawn is " + l.calculateArea() + " square feet.\n";
		output += "Weekly fee: R" + l.calculateWeeklyFee() + "\n";
		output += "20-week seasonal fee: R" + weekSeasonalFee20 + "\n";
		output += "Your payment is 20 times per year: R" + l.calculateWeeklyFee() + "\n";


		JOptionPane.showMessageDialog(null, output);
	}
}