Answer to Question #311986 in Java | JSP | JSF for GEO

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

1. The use of class and object

2. The use of JOption for input

3. The use of JOption for output

4. correct out

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);
	}
}