Java作业，拿上来大家看看，看哪些需要改进的～虚心求教···
通过封装编写Book类。要求：类具有属性书名、书号、主编、出版社、出版时间、页数、价格，其中页数不能少于200页，否则输出错误信息，并强制赋默认值200；为各属性设置赋值和取值方法；具有方法detail()，用来在控制台输出每本书的信息。
public class Book {
private String bookname;
private int bookid;
private String bookedi;
private String bookpub;
private String bookpt;
private int bookpage;
private float bookpric;
public Book(){
System.out.println("执行Book构造函数：");
}
public String getter(String name,String id,String editor,String puc, String date,int page,double price){
return("图书名 图书号 主编 出版商 出版时间 页数 价格 ");
}
public void setbookname(String bookname){
this.bookname=bookname;
}
public void setbookid(int bookid){
this.bookid=bookid;
}
public void setbookedi(String bookedi){
this.bookedi=bookedi;
}
public void setbookpub(String bookpub){
this.bookpub=bookpub;
}
public void setbookpt(String bookpt){
this.bookpt=bookpt;
}
public void setbookpage(int bookpage){
this.bookpage=bookpage;
if (bookpage<200){
System.out.println("错误！最少页数为200！");
this.bookpage=200;
}
else this.bookpage=bookpage;
}
public void setbookpric(float bookpric){
this.bookpric=bookpric;
}
public String printBook(){
return "图书名:"+bookname+"\n 图书号："+bookid+"\n 主编："+bookedi+"\n出版商："+bookpub+
"\n出版时间："+bookpt+"\n页数："+bookpage+"\n价格："+bookpric;
}
void detail(){
System.out.println("图书名：" + bookname);
System.out.println("图书号：" + bookid);
System.out.println("主编：" + bookedi);
System.out.println("出版商：" + bookpub);
System.out.println("出版时间：" + bookpt);
System.out.println("页数：" + bookpage);
System.out.println("价格：" +bookpric+"元");
}
/*import javax.swing.JOptionPane;*/
public class BookView extends Book{
private String bookname;
private int bookid;
private String bookedi;
private String bookpub;
private String bookpt;
private int bookpage;
private float bookpric;
public BookView(){
super();
}
}
public static void main(String args[]){
Book b=new Book();
b.bookname="JAVA程序开发";
b.bookid=112;
b.bookedi="张三";
b.bookpub="清华大学出版社";
b.bookpt="2011.01";
b.bookpage=413;
b.bookpric=39;
b.detail();
}
}