book.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 30 行

package patronBook;

/**	A class representing a book.  It has an out routine, and attributes 
	title, author, and isbn number. */
public class Book
{
	/**	Fields of a book */
	protected String title, author, isbn;
	
	/**	Create a new book
		Analysis: Time = O(1) */
	public Book(String t, String a, String i)
	{
		title = new String(t);
		author = new String(a);
		isbn = new String(i);
	}
	
	/**	Returns a string representation of the book
		Analysis: Time = O(1) */
	public String toString()
	{
		String temp = new String();
		temp =  "title:  " + title + "\n";
		temp = temp + "author: " + author + "\n";
		temp = temp + "isbn:   " + isbn + "\n";
		return temp;
	}	
}