Ok, I can not figure this out for the life of me. Program has been primarily wri

Question

Ok, I can not figure this out for the life of me. Program has been primarily written for us and we can only change certain code. I would appreciate any help, I think this is where the problem is

public class BookList {
// TODO Convert the ArrayList from "raw" to an appropriate type
private BookList bookList = new BookList();

I have no error in the code above but I can not get the next two to work, it says the error is with the add, which I can not change and the binarySearch which I can not change.

public void sortBooks() {
  // Call Collections.sort which will use compareTo
  // TODO add code here
  
  Collections.sort(Object);

public Book findBook(Book book) {
  // Call Collections.binarySearch
  // TODO Add code here
  Collections.binarySearch(bookList, title);
  // If the book is found, return it
  // TODO Add code here
  return book;
  // If not, return null
  return null;

Explanation / Answer

//Book.java

public class Book {

   String title,author; // Attributes
   int pages;
   double cost;
  

//Setters and getters
   public String getTitle() {
       return title;
   }
   public void setTitle(String title) {
       this.title = title;
   }
   public String getAuthor() {
       return author;
   }
   public void setAuthor(String author) {
       this.author = author;
   }
   public int getPages() {
       return pages;
   }
   public void setPages(int pages) {
       this.pages = pages;
   }
   public double getCost() {
       return cost;
   }
   public void setCost(double cost) {
       this.cost = cost;
   }
  
}

//BookComparator.java

import java.util.Comparator;

//Comparator of Type Book
public class BookComparator implements Comparator<Book>{

   public int compare(Book b1, Book b2) { // compare method compares two book titles
       if(b1.getTitle().compareTo(b2.getTitle())>0) // Titles Comparision
           return 1;
       else if(b1.getTitle().compareTo(b2.getTitle())<0)
           return -1;
       else
           return 0;
   }

}

//BookList.java

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;

public class BookList {

   List<Book> bookList = new ArrayList<Book>(); // List of Type Book
  
   public void addBook(Book book){
       bookList.add(book); // Adding Book object to List
   }
  
   public void sortBooks(){
       Collections.sort(bookList, new BookComparator()); // Comparator comparing books using sort method
       System.out.println("After Sorting Books..");
       System.out.println("**************************");
       Iterator<Book> itr = bookList.iterator();
       while(itr.hasNext()){ // Iterating books using Iterator
           Book bkk = itr.next();
           System.out.println(bkk.getTitle()+" "+bkk.getAuthor()+" "+bkk.getCost()+" "+bkk.getPages());
       }
      
      
       System.out.println("**************************");
   }
  
   public Book findBook(Book book){ //Searching book using binarySearch
       int value = Collections.binarySearch(bookList,book,new BookComparator());
       if(value>-1){ // If book is found
           Book bk = new Book(); // Storing the info of book in bk object
           Iterator<Book> itr = bookList.iterator();
           while(itr.hasNext()){
               Book b = itr.next();
               if(b.getTitle().equals(book.getTitle())){ // Setting book Details Using Iterator
                   bk.setAuthor(b.getAuthor());
                   bk.setTitle(b.getTitle());
                   bk.setPages(b.getPages());
                   bk.setCost(b.getCost());
               }
           }
           return bk; // If found return book object
       }
       else
           return null; // Else Null
   }
  
   public static void main(String[] args) {
       Book book1 = new Book(); // Creating book objects
       book1.setTitle("JavaSE");book1.setAuthor("James");
       book1.setPages(145);book1.setCost(280);
      
       Book book2 = new Book();
       book2.setTitle("JavaME");book2.setAuthor("Jack");
       book2.setPages(241);book2.setCost(287);
      
       Book book3 = new Book();
       book3.setTitle("JavaEE");book3.setAuthor("Peter");
       book3.setPages(245);book3.setCost(270);
      
       Book book4 = new Book();
       book4.setTitle("JavaServerFaces");book4.setAuthor("Mary");
       book4.setPages(200);book4.setCost(279);
      
       BookList bList = new BookList();
       bList.addBook(book1); bList.addBook(book2); // Adding books to List
       bList.addBook(book3); bList.addBook(book4);
      
       Scanner s = new Scanner(System.in);
       bList.sortBooks(); // Calling Sorting method to sort books
       System.out.println("Enter Book Title,Author,Cost and Pages:");
      
       Book key = new Book(); // Finding book using key object
       key.setTitle(s.next());
       //key.setAuthor(s.next());
       //key.setCost(s.nextDouble());
       //key.setPages(s.nextInt());
      
       Book b = bList.findBook(key); // Passing Book to search
       if(b!=null){
           System.out.println("The Book Details are :"); // Printing Book details when book found
           System.out.println("Book Title:"+b.getTitle());
           System.out.println("Book Author:"+b.getAuthor());
           System.out.println("Book Pages:"+b.getPages());
           System.out.println("Book Cost:"+b.getCost());
       }
       else
       {
          
           System.out.println("Book Not found...");
       }
   }

}

Output:

After Sorting Books..
**************************
JavaEE Peter 270.0 245
JavaME Jack 287.0 241
JavaSE James 280.0 145
JavaServerFaces Mary 279.0 200
**************************
Enter Book Title to Find:
JavaEE
The Book Details are :
Book Title:JavaEE
Book Author:Peter
Book Pages:245
Book Cost:270.0

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