Explanation of Solution
a.
CarlysEventPriceWithMethods.java
//import the required packages
import java.util.Scanner;
//define a method CarlysEventPriceWithMethods
public class CarlysEventPriceWithMethods
{
//Scanner object
private static Scanner sc = new Scanner(System.in);
//define a method getEventNum()
public static String getEventNum()
{
//print the statement
System.out.println("Enter event number: ");
//scan the values
return sc.next();
}
//define the method getNoGuests
public static int getNoOfGuests()
{
//print the statement
System.out.println("Enter no of guests: ");
//return the value scanned
return sc.nextInt();
}
//define the method displayMotto()
public static void displayMotto(Event e)
{
//prin the values
System.out.println(String.format("%26s", " ").replace(" ", "*"));
System.out.printf("* %22s *", " ");
System.out.println("\n* Carly’s Catering *");
System.out.printf("* %22s *\n", " ");
System.out.println(String.format("%26s", " ").replace(" ", "*"));
System.out.println("Event No: " + e.getEventNum());
System.out.println("No. of guests:" + e.getNoOfGuest());
System.out.println("Price per guest: $" + Event.PRICE_PER_GUEST);
//call the method computePrice
computePrice(e);
}
//define the method computePrice
public static void computePrice(Event e)
{
//print the values
System.out.println("Price: $" + e.getPrice());
System.out.println("Large event: " + ((e.getNoOfGuest() > Event.CUT_OFF) ? "Yes" : "No"));
}
//define the main method
public static void main(String[] args)
{
//Close scanner
sc.close();
}
}
Explanation:
The above snippet of code is used to create a class “CarlysEventPriceWithMethods”. In the code,
- Import the required header files.
- Define a class “CarlysEventPriceWithMethods”
- Declare the object of “Scanner” class.
- Define the “getEventNum()” method.
- Prompt the user to enter the event number.
- Return the value of “name”.
- Define the “getNoGuests()” method.
- Return the scanned value.
- Define the “displayMotto()” method.
- Print the values.
- Call the method “computePrice()”.
- Define the “computePrice()” method.
- Print the values.
- Define the “main()” method.
- Close the scanner.
b.
Event.java
//define a class Event
public class Event
{
//declare the class members
public final static int PRICE_PER_GUEST = 35;
public final static int CUT_OFF = 50;
private String eventNum;
private int noOfGuest;
private int price;
//define a method setEventNum()
public void setEventNum(String eventNum)
{
//set the value of eventNum
this.eventNum = eventNum;
}
//define a method setNoOfGuest()
public void setNoOfGuest(int noOfGuest)
{
//set the values of noOfGuest
this.noOfGuest = noOfGuest;
//set the values of price
this...
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Chapter 3 Solutions
EBK JAVA PROGRAMMING
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