}
public class Bookshelf {
String bookname;
String author;
String publish;
String date;
String books;
String info;
public Bookshelf(String info){
bookname="JAVA";
author="qwe";
publish="Tsing HUA";
date="19890322";
http://www.77cn.com.cn=info;
}
public String BOOK(){
info=bookname+author+publish+date;
return info;
}
public String toString(){
String bookinfo;
}
bookinfo="书名:"+bookname+" 作者:"+author+"\n"; bookinfo+="出版社:"+publish+" "+"出版日期:"+date; return bookinfo; }
方法2
class Book
{
String title,author,publisher,copyright;
Book()
{
title="JAVA 编程语言设计"; author="John Lewis"; publisher="电子工业出版社"; copyright="xuesheng";
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