Question

import java.util.LinkedList;
import java.util.Queue;
import java.time.*;

public class CheckOutLine
{
/** This is the main function for the program */
public static void main()
{
System.out.println("\n\tBegin CheckOutLine Demo\n");

System.out.println("\nCreating a Queue called \"register\" based on a LinkedList");
Queue<Customer> register = new LinkedList<Customer>();
  
System.out.println("\nAdding Customers to the Register queue");
// 1. TO DO: add five or more customers to the register line (5 Pts)
// format: register.add(new Customer(name, checkout time));

  
  
  
  
  
System.out.printf("Register line has %d customers\n", register.size());
  
System.out.println("\nDeclare the LocalTime start time as 10:00");
LocalTime lt = LocalTime.parse("10:00:00.00");
  
System.out.println("Start checking out Customers at the register at " + lt);
// 2. TO DO: code a while loop statement to process all the
// customers in the queue (3 Pts)
while(. . . . . . .)
{
Customer cust = register.poll();
lt = lt.plus(Duration.ofMinutes(cust.getMinutes()));
System.out.println(cust.toString() + " checked out at " + lt);
}

System.out.println("\n\tEnd CheckOutLine Demo\n");
}
}

import java.lang.String;

public class Customer
{
private String name;
private int minutes;

/**
* Constructor for objects of class Customer
* @param name - customer name
* @param minutes - number of minutes to check out at register
*/
public Customer(String name, int minutes)
{
this.name = name;
this.minutes = minutes;
}
  
/**
* This method returns the minutes for check out
* @return minutes - the number of minutes to spend checking out at the register
*/
public int getMinutes()
{
return minutes;
}

/**
* This method overrides the toString method of the Object class
* to return the customer information as a String for display
* @return Customer information as a String
*/
@Override
public String toString()
{
return String.format("%-20s %3d minutes ", name, minutes);
}
}

Answer 1

Code:

package Assignments;

import java.time.Duration;
import java.time.LocalTime;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Queue;
class Customer {
   private String name;
   private int minutes;

   /**
   * Constructor for objects of class Customer
   * @param name - customer name
   * @param minutes - number of minutes to check out at register
   */
   public Customer(String name, int minutes)
   {
   this.name = name;
   this.minutes = minutes;
   }
  
   /**
   * This method returns the minutes for check out
   * @return minutes - the number of minutes to spend checking out at the register
   */
   public int getMinutes()
   {
   return minutes;
   }

   /**
   * This method overrides the toString method of the Object class
   * to return the customer information as a String for display
   * @return Customer information as a String
   */
   @Override
   public String toString()
   {
   return String.format("%-20s %3d minutes ", name, minutes);
}
}

public class CheckOutLine {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       System.out.println("\n\tBegin CheckOutLine Demo\n");

       System.out.println("\nCreating a Queue called \"register\" based on a LinkedList");
       Queue<Customer> register = new LinkedList<Customer>();
      
       System.out.println("\nAdding Customers to the Register queue");
       // 1. TO DO: add five or more customers to the register line (5 Pts)
       register.add(new Customer("mouni",10));
       register.add(new Customer("mounika",20));
       register.add(new Customer("krishna",30));
       register.add(new Customer("krish",20));
       register.add(new Customer("sam",40));
       System.out.printf("Register line has %d customers\n", register.size());
      
       System.out.println("\nDeclare the LocalTime start time as 10:00");
       LocalTime lt = LocalTime.parse("10:00:00.00");
      
       System.out.println("Start checking out Customers at the register at " + lt);
       // 2. TO DO: code a while loop statement to process all the
       // customers in the queue (3 Pts)
       //Iterator<Customer> it=new register.iterator<Customer>();
       while(!register.isEmpty())
       {
       Customer cust = register.poll();
       lt = lt.plus(Duration.ofMinutes(cust.getMinutes()));
       System.out.println(cust.toString() + " checked out at " + lt);
       }
       System.out.println("\n\tEnd CheckOutLine Demo\n");
       }
   }

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