booklendapi.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter7.book.booklend;
import chapter7.book.bookmanage.Book;
import chapter7.book.reader.LibraryCard;
public abstract class BooklendAPI  implements IBooklend 
{
    LendRecord lendRecord ;
   
	public BooklendAPI(int bookID)
    {
		this.lendRecord = new LendRecord(bookID);
    }
	
	public BooklendAPI(Book book,LibraryCard card)
    {
		this.lendRecord = new LendRecord(book,card);
    }
	
	public boolean checkLend() 
	{
		
		return lendRecord.checkLend();
	}

	public boolean checkSubscribe() 
	{
		return lendRecord.checkSubscribe();
	}

	public boolean continueLend() 
	{
		return lendRecord.continueLend();
	}

	public boolean lend() 
	{
		return lendRecord.lend();
	}

	public boolean returnBook() 
	{
		return lendRecord.returnBook();
	}

	public abstract boolean subscribe() ;
	//{
	//	return lendRecord.subscribe();
	//}
	
	
}