​                Book book = new Book();
		book.setName("红楼梦");
		book.setAuthor("曹雪芹");
		book.setPublish("人民文学出版社");
		book.setPrice(8);
		System.out.println("书名："+book.getName());
		System.out.println("作者：:"+book.getAuthor());
		System.out.println("出版社："+book.getPublish());
		System.out.println("价格："+book.getPrice());

		System.out.println("--------------------------");
		System.out.println("--------------------------");

		book.setName("小李飞刀");
		book.setAuthor("古龙");
		book.setPublish("中国长安出版社");
		book.setPrice(55.5f);
		System.out.println("书名："+book.getName());
		System.out.println("作者：:"+book.getAuthor());
		System.out.println("出版社："+book.getPublish());
		System.out.println("价格："+book.getPrice());

本节编程练习我是这样赋值的，在这种小问题下，正常做法是创建两个实例化对象，还是对一个进行重复赋值比较好