books.java

音像管理软件

package mediasystem.mediadata;

import java.util.*;
import mediasystem.media.*;

public class Books {
  Vector bookList = new  Vector();

  public boolean isExisted(String ISBN){
    for(int i = 0; i < bookList.size(); i++){
      if(((MyBook)bookList.get(i)).getBookISBN().compareTo(ISBN) == 0) {
        return true;
      }
    }
    return false;
  }

  public void addBook(String[] newBookInfo){
    MyBook newBook = new MyBook();
    newBook.setMediaName(newBookInfo[0]);
    newBook.setPrice(Float.parseFloat(newBookInfo[1]));
    newBook.setPress(newBookInfo[2]);
    newBook.setArtist(newBookInfo[3]);
    newBook.setPublishDate(newBookInfo[4]);
    newBook.setBookISBN(newBookInfo[5]);
    bookList.add(newBook);
  }

  public LinkedList searchBook(String bookName, String artist) {
    LinkedList list = new LinkedList();
    for (int i = 0; i < bookList.size(); i++) {
      MyBook index = (MyBook) bookList.get(i);
      boolean compareResult1 = (index.getMediaName().compareTo(bookName) == 0);
      if (bookName.compareTo("") == 0)
        compareResult1 = true;
      boolean compareResult2  = (index.getArtist().compareTo(artist) == 0);
      if (artist.compareTo("") == 0)
        compareResult2 = true;

      if ( compareResult1 && compareResult2) {
        list.add(index);
      }
    }
    return list;
  }

  public boolean delBook(String ISBN) {
    for(int i = 0; i < bookList.size(); i++){
      MyBook index = (MyBook)bookList.get(i);
      if(index.getBookISBN().compareTo(ISBN) == 0){
        bookList.remove(i);
        return true;
      }
    }
    return false;
  }
}