class Book {
              private String title;
              private String author;
              private String isbn;
              
              // Constructor
              public Book(String title, String author, String isbn) {
              this.title = title;
              this.author = author;
              this.isbn = isbn;
              }
              
              // Getter methods
              public String getTitle() {
              return title;
              }
              
              public String getAuthor() {
              return author;
              }
              
              public String getIsbn() {
              return isbn;
              }
              }
              
              class BookCollection {
              private static final int MAX_BOOKS = 100; // Maximum number of books in the collection
              private Book[] books;
              private int numBooks;
              
              // Constructor
              public BookCollection() {
              books = new Book[MAX_BOOKS];
              numBooks = 0;
              }
              
              // Method to add a book to the collection
              public void addBook(Book book) {
              if (numBooks < MAX_BOOKS) {
              books[numBooks] = book;
              numBooks++;
              System.out.println("Book added: " + book.getTitle());
              } else {
              System.out.println("Cannot add more books. Collection is full.");
              }
              }
              
              // Method to remove a book from the collection
              public void removeBook(String isbn) {
              for (int i = 0; i < numBooks; i++) {
              if (books[i].getIsbn().equals(isbn)) {
              System.out.println("Book removed: " + books[i].getTitle());
              // Shift books to fill the gap
              for (int j = i; j < numBooks - 1; j++) {
              books[j] = books[j + 1];
              }
              books[numBooks - 1] = null;
              numBooks--;
              return;
              }
              }
              System.out.println("Book with ISBN " + isbn + " not found.");
              }
              }
              
              public class pro5 {
              public static void main(String[] args) {
              // Creating a BookCollection
              BookCollection myBooks = new BookCollection();
              
              // Adding books
              myBooks.addBook(new Book("The Catcher in the Rye", "J.D. Salinger", "9780316769488"));
              myBooks.addBook(new Book("To Kill a Mockingbird", "Harper Lee", "9780061120084"));
              myBooks.addBook(new Book("1984", "George Orwell", "9780451524935"));
              
              // Removing a book
              myBooks.removeBook("9780061120084");
              }
              }