Use the LinkedList class to simulate a queue, and use the add method to simulate the enqueue, and the remove method to simulate the dequeue method for a Queue. Remember to use FIFO. Create 3 queues, one called Animal Shelter, another called Cats, and another called Dogs. Use the following menu-driven application: 0. Add New Microchips 1. Donate a Cat 2. Donate a Dog 3. Adopt a Cat 4. Adopt a Dog 5. Adopt Oldest Pet 6. Exit

import java.util.*;

public class Q {

  public static LinkedList<String> dogs = new LinkedList<String> ();

  public static LinkedList<String> cats = new LinkedList<String> ();

  public static LinkedList<String> animals = new LinkedList<String> ();

  public static void enqueueCats(){

      System.out.println("Enter name");

      Scanner sc=new Scanner(System.in);

      String name = sc.next();

      cats.addLast(name);

      animals.addLast(name);

  }

  public static void enqueueDogs(){

      System.out.println("Enter name");

      Scanner sc=new Scanner(System.in);

      String name = sc.next();

      dogs.addLast(name);

      animals.addLast(name);

  }

  public static void removeFromQueue(char q,String name){

      LinkedList<String> L = new LinkedList<String> ();

      switch (q) {

          case 'c':

              L = cats;

              break;

          case 'd':

              L = dogs;

              break;

          case 'a':

              L = animals;

      }

      LinkedList<String> tmp = new LinkedList<String> ();

      while (!L.isEmpty()){

          if(!L.getFirst().equals(name)){

              tmp.add(L.getFirst());

          }

          L.removeFirst();

      }

      while (!tmp.isEmpty()){

          L.add(tmp.removeLast());

      }

  }

  public static void dequeueCats(){

      System.out.println("Enter name");

      Scanner sc=new Scanner(System.in);

      String name = sc.next();

      removeFromQueue('c',name);

      removeFromQueue('a',name);

  }

  public static void dequeueDogs(){

      System.out.println("Enter name");

      Scanner sc=new Scanner(System.in);

      String name = sc.next();

      removeFromQueue('d',name);

      removeFromQueue('a',name);

  }

  public static void dequeueAnimals(){

      System.out.println("Enter name");

      Scanner sc=new Scanner(System.in);

      String name = sc.next();

      removeFromQueue('a',name);

      removeFromQueue('d',name);

      removeFromQueue('c',name);

  }

  public static void display(){

      System.out.println("animals:");

      for (String s : animals)

           System.out.print(s);

       System.out.println();

       System.out.println("cats:");

      for (String s : cats)

           System.out.print(s);

       System.out.println();

       System.out.println("dogs:");

      for (String s : dogs)

           System.out.print(s);

       System.out.println();

  }

  public static void display_choices(){

      String [] choices = {"Donate a Cat","Donate a Dog","Adopt a Cat","Adopt a Dog","Adopt Oldest Pet","Exit"};

      for (int i=0;i<choices.length ;i++ ) {

          System.out.println((i+1)+"."+choices[i]);

      }

  }

  public static void main(String[] args) {

      Scanner sc=new Scanner(System.in);

      while(true){

          display_choices();

          int choice=sc.nextInt();

          switch (choice) {

              case 1 :

                  enqueueCats();

                  display();

                  break;

              case 2 :

                  enqueueDogs();

                  display();

                  break;

              case 3 :

                  dequeueCats();

                  display();

                  break;

              case 4 :

                  dequeueDogs();

                  display();

                  break;

              case 5:

                  dequeueAnimals();

                  display();

              case 6 :

                  System.exit(0);

          }

      }

  }

}

explanation:

because they are scammers. our phones tells us when there are known scammers calling just so we can be informed. so basically they want to scam you. lol

the answers

1. video

2. net

3. cloud

4. optical

5. rambus

hope it