一道JAVA的作业题，求大体设计。。。

[likexe]

在一个图书管理程序中，类Book，Newspaper和Video都是类Media的子类。编写一个类，该类能够实现对一组书、报纸等的存储，并提供一定的检索功能。

[likexe]

[w00925036]

public abstract class Media {
    public String name;
    public String authorName;
    public abstract String toString();
    public Media(String name,String authorName){
    	this.name=name;
    	this.authorName=authorName;
    }
}


class Book extends Media {
    public String name;
    public String authorName;
    public Book(String name,String authorName){
    	super(name,authorName);
    	this.name=name;
    	this.authorName=authorName;
    }
    public String toString(){
    	String message="书名为"+name+"，作者是"+authorName+"";
    	return message;
    }
}


class Newspapper extends Media{
	public String name;
    public String authorName;
 
    public Newspapper(String name,String authorName){
        super(name,authorName);
    	this.name=name;
    	this.authorName=authorName;
    }
    public String toString(){
    	String message="报名为"+name+"，编辑是"+authorName+"";
    	return message;
    }
}

import java.util.*;
public class Manage {
	public static ArrayList<Media> a=new ArrayList<Media>();
public static void find(String name){
	Iterator<Media> ite=a.iterator();
	while(ite.hasNext()){
		Media exe=ite.next();
		if(exe.name==name||exe.authorName==name){
			System.out.println(exe.toString());
			return;
		}
	}
	System.out.println("没有此记录");
}
public void add(Media m){
	a.add(m);
}
public static void main(String args[]){
	Media temp1=new Book("钢铁是怎样炼成的","保尔.柯察金");
	a.add(temp1);
	Media temp2=new Newspapper("人民日报","李刚");
	a.add(temp2);
	Media temp3=new Book("一座城池","韩寒");
	Media temp4=new Book("平凡的世界","路遥");
	a.add(temp3);
	a.add(temp4);
	
    Manage.find("路遥");
	
	
}
}

[huangxiaofei]

楼上连代码都给出来了，应该是很好的解答了

[angel6709]