dsa

Driver.java (6238B)

---

 package collections;
 
 import java.util.Scanner;
 
 public class Driver {
     Scanner in = new Scanner(System.in);
 
     public static void main(String[] args) {
         int userSelection;
         double totalBagWeight = 0;
         double totalSampleWeight = 0;
         Driver ui = new Driver();
 
         /*
         try {
             StackInterface<String> packageBag = (StackInterface) Class.forName(args[0]).newInstance();
         }
         catch (ClassNotFoundException e1) {
             e1.printStackTrace();
         }
         catch (InstantiationException e1) {
             e1.printStackTrace();
         }
         catch (IllegalAccessException e1) {
             e1.printStackTrace();
         }
         */
 
         StackRA<Package> packageBag = new StackRA<>();
         StackRA<Sample> sampleBag = new StackRA<>();
 
         ui.listOptions();
 
         do {
             userSelection = ui.menuSelection();
             System.out.println(userSelection);
             switch (userSelection) {
                 case 0:
                     ui.exitProgram();
                     break;
                 case 1:
                     totalBagWeight += ui.pickUp(packageBag);
                     break;
                 case 2:
                     if (ui.askForSample(packageBag)) {
                         ui.addSample(packageBag, sampleBag);    // Take a sample if yes.
                     }
                     totalBagWeight -= ui.updateBagWeight(packageBag);
                     totalSampleWeight += ui.dropOff(packageBag);
                     break;
                 case 3:
                     ui.getBagContents(packageBag, totalBagWeight);
                     break;
                 case 4:
                     ui.getSampleContents(sampleBag, totalSampleWeight);
                     break;
                 case 5:
                     totalSampleWeight -= ui.updateSampleWeight(sampleBag);
                     ui.enjoySample(sampleBag);
                     break;
                 case 6:
                     totalSampleWeight = 0;
                     sampleBag.popAll();
                     System.out.println("Sample bag has been emptied");
             }
         } while (userSelection != 0);
     }
 
     public double pickUp(StackRA<Package> myStack) {
         String name;
         double weight;
         int number;
         String sender;
         String recipient;
 
         System.out.println("Please specify package info:");
         System.out.print("Item name: ");
         name = in.nextLine().trim();
         System.out.print(name);
 
         System.out.print("Item weight: ");
         weight = Double.parseDouble(in.nextLine().trim());
         System.out.print(weight);
 
         System.out.print("Number of items: ");
         number = Integer.parseInt(in.nextLine().trim());
         System.out.print(number);
 
         System.out.print("Sender: ");
         sender = in.nextLine().trim();
         System.out.print(sender);
 
         System.out.print("Recipient");
         recipient = in.nextLine().trim();
         System.out.print(recipient);
 
         Package bagPackage = new Package(name, weight, number, sender, recipient);
 
 
         myStack.push(bagPackage);
         System.out.println("A package of " + name +  " each weighing " + weight + " are now in the bag");
 
         return weight * number;
     }
 
     public boolean askForSample(StackRA<Package> bag) {
         if (bag.isEmpty()) {
             System.out.println("No deliveries to process!");
             return false;
         }
         else {
             char answer;
             System.out.println("Here is your package " + bag.peek().getRecipient() + ", may I please, please keep a sample (Y/N)?");
             answer = in.nextLine().charAt(0);
             System.out.println(answer);
 
             if (answer == 'Y') {
                 return true;
             }
             return false;
         }
     }
 
     public double dropOff(StackRA<Package> myStack) {
         if(myStack.isEmpty()) {
             return 0;
         }
 
         Package pack = myStack.peek();
         myStack.pop();
         return pack.getWeight();
     }
 
     public void addSample(StackRA<Package> packageBag, StackRA<Sample> sampleBag) {
         Package pack = packageBag.peek();
         Sample newSample = new Sample(pack.getName(), pack.getWeight());
         sampleBag.push(newSample);
     }
 
     public double updateBagWeight(StackRA<Package> bag) {
         if (!bag.isEmpty()) {
             double weight = bag.peek().getWeight() * bag.peek().getNumber();
             return weight;
         }
         return 0;
     }
 
     public double updateSampleWeight(StackRA<Sample> bag) {
         if (!bag.isEmpty()) {
             return bag.peek().getWeight();
         }
         return 0;
     }
 
     public void getBagContents(StackRA<Package> bag, double totalWeight) {
         System.out.println("Bag has " + bag.size() + " items and weighs " + totalWeight + " lbs");
     }
 
     public void getSampleContents(StackRA<Sample> samples, double totalWeight) {
 
         System.out.println("Bag has " + samples.size() + " items and weighs " + totalWeight + " lbs");
     }
 
     public void enjoySample(StackRA<Sample> sampleBag) {
         if (sampleBag.isEmpty()) {
             System.out.println("No samples to enjoy!");
         }
         else {
             System.out.println("This " + sampleBag.peek() + " is amazing! I love free stuff");
             sampleBag.pop();
         }
     }
 
     public int menuSelection() {
         System.out.print("Make your menu selection now: ");
         return Integer.parseInt(in.nextLine().trim());
     }
 
     public void listOptions(){
         System.out.println("Select from the following menu:");
         System.out.println("    0. Exit");
         System.out.println("    1. Pick up an order");
         System.out.println("    2. Drop off an order");
         System.out.println("    3. Display number of packages and weight of bag.");
         System.out.println("    4. Display number of items and weight of bag of samples");
         System.out.println("    5. Enjoy an item from bag of samples");
         System.out.println("    6. Empty bag of samples");
     }
 
     void exitProgram(){
         System.out.println("Exiting program...Good Bye");
         System.exit(0);
     }
 }