*JAVA

Modify the

Area and Perimeter

Calculator

In this exercise, you?ll modify the Area and PerimeterCalculator so it

allows the user to

enter the length and width on the same line.

Review the application

1.

Open the project named ch09_ex4_AreaAndPerimeter

in the extra_ex_starts directory.

2.

Open the Main class and review its code.

3.

Run the application to make sure it works correctly.

Modify the application so it allows two entries on thesame line

4.

In the Main class, modify the code that gets the

length and the width so it prompts the user to

enter the length and width

on the same line.

Then, parse the string that?s entered

by the user to get

one String object for the length and another for the width.

5.

Modify the code that displays the data for the

Rectangle object so that it includes the length

and width.

6.

Run the application to make sure it works correctly.

If the user enters 100 and 20, the

data that?s printed to the console should look something likethis:

Enter length and width: 100 20

Length: 100.0

Width: 20.0

Area: 2,00

0.000

Perimeter: 240.000

Here is the code:

Transcribed Image Text:

Main.java X Rectangle.java X Source History 1 package murach. rectangle; 2 3 import java.util.Scanner; 4 5 649 8 9 10 11 12 13 O NM 14 15 5 6 16 17 18. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 N 09 3 4 3 34 5 3 35 36 37 □ public class Main ( public static void main(String args[]) { System.out.println("Welcome to the Area and Perimeter Calculator"); System.out.println(); Scanner sc = new Scanner (System.in); String choice = "y"; while (choice.equals IgnoreCase ("y")) { // get input from user } System.out.print("Enter length: "); double length = Double.parseDouble (sc.nextLine()); System.out.print("Enter width: "); double width = Double.parse Double (sc.nextLine()); // calculate total Rectangle r = new Rectangle (length, width); // format and display output String message = "Area: U " + r.getAreaNumber Format () + "\n" + " + r.getPerimeter Number Format () + "\n"; "Perimeter: System.out.println (message); // see if the user wants to continue System.out.print("Continue? choice sc.nextLine(); (y/n): "); System.out.println(); System.out.println("Bye!"); Main.java X Rectangle.java X Source History 1 package murach. rectangle; 2 3 import java.util.Scanner; 4 5 649 8 9 10 11 12 13 O NM 14 15 5 6 16 17 18. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 N 09 3 4 3 34 5 3 35 36 37 □ public class Main ( public static void main(String args[]) { System.out.println("Welcome to the Area and Perimeter Calculator"); System.out.println(); Scanner sc = new Scanner (System.in); String choice = "y"; while (choice.equals IgnoreCase ("y")) { // get input from user } System.out.print("Enter length: "); double length = Double.parseDouble (sc.nextLine()); System.out.print("Enter width: "); double width = Double.parse Double (sc.nextLine()); // calculate total Rectangle r = new Rectangle (length, width); // format and display output String message = "Area: U " + r.getAreaNumber Format () + "\n" + " + r.getPerimeter Number Format () + "\n"; "Perimeter: System.out.println (message); // see if the user wants to continue System.out.print("Continue? choice sc.nextLine(); (y/n): "); System.out.println(); System.out.println("Bye!");

Answer rating: 100% (QA)

Rectanglejava is same package murachrectangle import javatextNumberFormat class Rectangle private do... View the full answer